CIRCUIT PROTECTION SOLUTIONS FOR AUTOMOTIVE APPLICATIONS Passenger Car Solutions Our offering of automotive circuit protection solutions encompasses a wide range of applications: Powertrain Safety Comfort Infotainment Fuse Box Power Supply Lighting Engine Management Transmission Control Cooling Fan Water Pump ABS EPAS Air Bag Chassis Control Window Lift Sun Roof Door Lock Power Seat HVAC Dashboard Navigation In-Car Entertainment Wire Harness Generator HID Headlight Headlight Leveling Directional Lighting portfolio of Littelfuse automotive technologies, products & services Passenger Automobiles Aftermarket SERVICES Product Technologies Plus Application Design Evaluation Services Littelfuse is the world leader in circuit protection. We offer an extensive selection of circuit protection technologies for Automotive applications. Littelfuse circuit protection expert staff can assist you in designing circuit protection for your most demanding applications. Solutions for over-current applications as well as over-voltage applications are available from Littelfuse. CIRCUIT PROTECTION TECHNOLOGIES (1-8) 1 5 2 6 3 7 4 8 1. Fuses/Footprint Reduction MICRO2TM, MICRO3TM fuses 2. Medium Current Cartridge Fuses MCASE+TM cartridge fuses; considerably smaller than JCASE(R) and Low Profile JCASE(R) fuses 3. Discrete High Current Fuses High Current Bolt Down fuses and fuse arrays 4. ZCase Masterfuse Smallest high current distribution product in the industry 5. Masterfuse High current distribution array 6. ZCase Single MEGA Minimal Footprint Bolt Down fuse 7. High Voltage Fuses Low-current fuses for Electric and Hybrid Electric Vehicles 8. Battery Cable Protection CABLE PRO (R) protectors for mounting directly inline as part of a high power cable assembly Table of Contents Blade Fuses 1 Cartridge Fuses 10 High Current Fuses 16 Cable & PAL Fuses 38 High Voltage Fuses 42 Specialty Products 47 Fuseology51 Helping to make the World a Cleaner Place to Live Littelfuse and the Environment As members of the global community, we at Littelfuse have always strived to understand the impact of what we do, and of what we create, on the world around us. Because of this, our concern for the environment has always been an integral and fundamental part of our business. We continually work to balance our business objectives with the need to protect and improve the local and global environment. Our Strategy for the Design of Eco-friendly Products Littelfuse has established a focused program committed to developing high-performance eco-friendly products along with a comprehensive set of processing/reliability data and technical process expertise. This includes processes for eliminating, detecting and documenting the presence of hazardous materials such as * Lead * Cadmium * Hexavalent Chromium * Mercury * Brominated flame-retardants (PBBs and PBDEs) littelfuse.com The Littelfuse strategy for eco-friendly products is specifically designed to help support our worldwide customers in their transition to Lead-Free processing. All products considered to be lead-free are marked with this symbol. Littelfuse defines lead-free as products which contain less than 1000ppm (0.1%) Lead, measured by weight of the entire product. All RoHS compliant products are marked with this symbol. Littelfuse follows the requirement set by the European Union for all RoHS compliant products. The European Union Directive 2002/95/EC RoHS restricts the use of Lead, Mercury, Hexavalent Chromium, Cadmium and Brominated flame-retardants (PBBs and PBDEs) Visit www.littelfuse.com/lead-free for further information. Blade Fuses MICRO2 TM Blade Fuse 32V 2 MICRO3 TM Blade Fuse 32V 3 Low Profile MINI(R) Fuses Rated 58V 4 MINI (R) Blade Fuse Rated 32V 5 MINI (R) Blade Fuse Rated 58V 6 ATOF (R) Blade Fuse Rated 32V 7 MAXI(R) Blade Fuse Rated 32V 8 MAXI(R) Blade Fuse Rated 58V 9 1 littelfuse.com Blade Fuses MICRO2TM Blade Fuses Rated 32V The MICRO2TM Fuse is the new standard for vehicle circuit protection. Its sub-miniature design meets the need for more circuits to be protected while utilizing less space and its ability to cope with high temperatures in adverse environments makes the MICRO2TM Fuse of recommended choice for protection. Black amperage stamps are used on the 20A & 25A / light colored housings to improve contrast for vision system inspection. Specifications MICRO2 TM Blade Fuses Voltage Rating: MICRO2 (Silver Plated) 32 VDC MICRO2 Sn (Tin Plated) 32 VDC Interrupting Ratings: 1000A @ 32 VDC 1000A @ 32 VDC *Component Level Temperature Range: **System Level Temperature Range: -40C to +125C -40C to +105C -40C to +105C -40C to +85C 105C and 85C are typical system level temperature requirements. Terminals: Ag plated zinc alloy Housing Material: Conforms to: PA66 PA66 SAE 2741 and ISO 8820-4 in reference to electrical, mechanical and environmental performance requirements Ordering Information Part Number MICRO2 TM Sn (Tin plated) Blade Fuses Time-Current Characteristics Package Size % of Rating Opening Time Min / Max 0327xxx.YX2S 4000 110 100 h / - 0327xxx.UXS 500 135 0.75 sec / 120 sec 0327xxx.LXS 50 160 0.30 sec / 50 sec MICRO2 Sn Fuse 0327xxx.YX2T Dimensions 4000 Ratings Dimensions in mm Sn plated zinc alloy Part Number Current Rating Housing (A) Material Color 200 0.15 sec / 5 sec 350 0.04 sec / 0.50 sec 600 0.02 sec / 0.100 sec Typ. Voltage Drop (mV) Cold Resistance (m) I2t (A2s) 0327005._ 5 116 17.4 17 032707.5_ 7.5 106 10.8 47 0327010._ 10 102 7.7 89 0327015._ 15 94 4.9 189 0327020._ 20 91 3.5 397 0327025._ 25 90 2.6 585 30 88 2.1 1028 0327030._ MICRO2 Fuse Preliminary Time-Current Characteristics Time-Current Characteristic Curves July 2008 Temperature Rerating Curve 100.00 5 10.00 7.5 Time (s) 10 15 20 25 1.00 30 0.10 *Component Level Temperature = the maximum ambient temperature that a single fuse will survive. This does not factor-in the heat from a populated fuse box, but does include the heat from the current load with the proper rerating. **System Level Temperature represents the ambient temperature of the fuse box at a location within the vehicle. The temperature within a populated fuse box (in a given location) will be higher. The limiting factor is the plating. Sn-plating's temperature limit is 130C, and Ag-plating allows up to 150C at the terminal interface. 0.01 1 10 100 1000 Current (A) Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 2 Blade Fuses MICRO3TM Blade Fuses Rated 32V The MICRO3TM Fuse has 3 terminals and 2 fuse elements with a common center terminal. Its sub-miniature design meets the need for more circuits to be protected while utilizing less space and its ability to cope with high temperatures in adverse environments makes the MICRO3TM Fuse of recommended choice for protection. Specifications Voltage Rating: 32 VDC Interrupting Ratings: 1000A @ 32 VDC *Component Level Temperature Range: -40C to +125C **System Level Temperature Range: -40C to +105C 105C is a typical system level temperature requirement. Terminals: Ag plated zinc alloy Housing Material:PA66 Conforms to: SAE 2741 and ISO 8820-4 in reference to electrical, mechanical and environmental performance requirements Ordering Information Dimensions Part Number Dimensions in mm Time-Current Characteristics Package Size % of Rating 0337xxx.PX2S 2000 110 100 h / - 0337xxx.LXS 50 135 0.75 sec / 120 sec 160 0.30 sec / 50 sec Ratings Temperature Rerating Curve Opening Time (Min / Max) 200 0.15 sec / 5 sec 350 0.04 sec / 0.50 sec 600 0.02 sec / 0.100 sec Typ. Voltage Drop (mV) Cold Resistance (m) I2t (A2s) 5 116 17.4 17 033707.5_ 7.5 106 10.8 47 0337010._ 10 102 7.8 89 0337015._ 15 94 4.9 189 Part Number Current Rating (A) 0337005._ Housing Material Color Time-Current Characteristic Curves *Component Level Temperature = the maximum ambient temperature that a single fuse will survive. This does not factor-in the heat from a populated fuse box, but does include the heat from the current load with the proper rerating. **System Level Temperature represents the ambient temperature of the fuse box at a location within the vehicle. The temperature within a populated fuse box (in a given location) will be higher. The limiting factor is the plating. Sn-plating's temperature limit is 130C, and Ag-plating allows up to 150C at the terminal interface. Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 3 littelfuse.com Blade Fuses Low Profile MINI(R) Blade Fuses Rated 58V The Low Profile MINI(R) fuse has similar performance characteristics as the standard MINI(R) fuse. The lower overall height allows for more space and weight savings. The Low Profile MINI(R) fuse is designed to mate with tuning-fork terminals, which provides additional weight and material savings in fuse box designs by eliminating the need for female box terminals. Specifications Low Profile MINI (R) Blade Fuses Voltage Rating: Interrupting Rating: *Component Level Temperature Range: **System Level Temperature Range: 58 VDC 1000A @ 58 VDC -40C to +125C -40C to +105C Terminals: Housing Material: Complies with: Ag plated zinc PA66 ISO 8820-9 Ordering Information Part Number Low Profile MINI (R) 10.9mm Blade Fuses Low Profile MINI (R) 10.9mm 105C is a typical system level temperature requirement. Time-Current Characteristics Package Size Plating % of Rating 0891xxx.NXS 5000 Ag 110 360,000 s / - 0891xxx.U 500 Ag 135 0.750 s / 120 s 0891xxx.H 100 Ag 200 0.150 s / 5 s 350 0.080 s / 0.250 s 600 0.030 s / 0.100 s Low Profile MINI (R) 10.9mm Fuse 0891xxx.NXWS 5000 Ag Opening Time Min / Max (s) Ratings Dimensions Dimensions in mm Part Number Current Rating (A) 0891002._ 0891005._ 089107.5_ 0891010._ 0891015._ 0891020._ 0891025._ 0891030._ 2 5 7.5 10 15 20 25 30 Housing Material Color Cold Resistance (m) I2t (A2s) 54.2 17.21 10.65 7.59 4.70 3.35 2.56 2.06 3 22 53 102 198 420 613 1110 Only offered for the 10.0mm series. Time-Current Characteristic Curves Temperature Rerating Curve Low Profile MINI (R) 10.9mm *Component Level Temperature = the maximum ambient temperature that a single fuse will survive. This does not factor-in the heat from a populated fuse box, but does include the heat from the current load with the proper rerating. **System Level Temperature represents the ambient temperature of the fuse box at a location within the vehicle. The temperature within a populated fuse box (in a given location) will be higher. The limiting factor is the plating. Sn-plating's temperature limit is 130C, and Ag-plating allows up to 150C at the terminal interface. Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 4 Blade Fuses MINI(R) Blade Fuses Rated 32V The MINI(R) Fuse is the standard for vehicle circuit protection. Its miniature design meets the need for more circuits to be protected while utilizing less space, and its ability to cope with high temperatures in adverse environments makes the MINI(R) Fuse of recommended choice for protection. MINI (R) Blade Fuses MINI (R) Sn (Tin plated) Blade Fuses Specification MINI (Silver Plated) Interrupting Rating: 1000A @ 32 VDC Voltage Rating: 32 VDC *Component Level Temperature Range: -40C to +125C **System Level Temperature Range: -40C to +105C 105C and 85C are typical system level temperature requirements. Terminals: Ag plated zinc alloy Housing Material: PA66 Complies with: SAE J2077, ISO 8820-3, UL 248 Special Purpose Fuses Ordering Information Part Number MINI Sn (Tin Plated) 1000A @ 32 VDC 32 VDC -40C to +105C -40C to +85C Sn plated zinc alloy PA66 SAE J2077, ISO 8820-3 not UL recognized Time-Current Characteristics Package Size % of Rating Opening Time Min / Max (s) 0297xxx.WXNV 3000 110 360,000 s / - 0297xxx.U 500 135 0.75 s / 600 s 0297xxx.H 100 200 0.15 s / 5 s 0297xxx.L 50 350 0.080 s / 0.500 s 600 0.030 s / 0.100 s Time-Current Characteristic Curves MINI (R) Sn Fuse 0297xxx.WXT 3000 Ratings Typ. Voltage Drop (mV) Cold Resistance (m) I2t (As) 2 171 55.60 2.8 3 153 33.75 9.4 Part Number Current Rating (A) 0297002._ 0297003._ Housing Material Color 0297004._ 4 121 23.48 17 0297005._ 5 129 17.75 25 029707.5_ 7.5 135 10.85 68 0297010._ 10 108 7.42 93 0297015._ 15 98 4.58 270 0297020._ 20 96 3.21 380 0297025._ 25 86 2.36 625 0297030._ 30 87 1.85 1130 Dimensions Temperature Rerating Curve Dimensions in mm *Component Level Temperature = the maximum ambient temperature that a single fuse will survive. This does not factor-in the heat from a populated fuse box, but does include the heat from the current load with the proper rerating. **System Level Temperature represents the ambient temperature of the fuse box at a location within the vehicle. The temperature within a populated fuse box (in a given location) will be higher. The limiting factor is the plating. Sn-plating's temperature limit is 130C, and Ag-plating allows up to 150C at the terminal interface. 0.825 Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 5 littelfuse.com Blade Fuses MINI(R) Blade Fuses Rated 58V MINI(R) style fuse for use in 42V Systems. Same Time-Current characteristic as the 32V MINI(R) fuse. Fits into standard MINI(R) fuse sockets. Has a rejection feature to prevent fuses with lower voltage rating from being wrongfully inserted into the circuit. Current rating 2A - 30A @58 VDC max. Specifications MINI (R) Blade Fuses Interrupting Rating: Voltage Rating: *Component Level Temperature Range: **System Level Temperature Range: 1000A @ 58 VDC 58 VDC -40C to +125C -40C to +105C 105C is a typical system level temperature requirement. Terminals: Housing Materials: Complies with: Ag plated zinc alloy PA66 SAE J2077, SAE 2576 ISO 8820 UL 248 Special Purpose Fuses Ordering Information Part Number Time-Current Characteristic Curves Time-Current Characteristics Package Size % of Rating 3000 110 360,000 s / - 135 0.75 s / 600 s 0997xxx.WXN Opening Time Min / Max (s) 200 0.15 s / 5 s 350 0.080 s / 0.500 s 600 0.030 s / 0.100 s Ratings Typ. Voltage Drop (mV) Cold Resistance (m) I2t (As) 2 171 55.60 2.8 3 153 33.75 9.4 0997004_ 4 121 23.48 17 0997005_ 5 129 17.75 25 099707.5_ 7.5 135 10.85 68 0997010_ 10 108 7.42 93 0997015_ 15 98 4.58 270 0997020_ 20 96 3.21 380 0997025_ 25 86 2.36 625 0997030_ 30 87 1.85 1130 Part Number Current Rating (A) 0997002_ 0997003_ Housing Material Color Dimensions Temperature Rerating Curve Dimensions in mm *Component Level Temperature = the maximum ambient temperature that a single fuse will survive. This does not factor-in the heat from a populated fuse box, but does include the heat from the current load with the proper rerating. **System Level Temperature represents the ambient temperature of the fuse box at a location within the vehicle. The temperature within a populated fuse box (in a given location) will be higher. The limiting factor is the plating. Sn-plating's temperature limit is 130C, and Ag-plating allows up to 150C at the terminal interface. 0.825 Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 6 Blade Fuses ATOF (R) Blade Fuses Rated 32V Developed by Littelfuse for the automotive industry, the ATOF(R) fuse has become the original equipment circuit protection standard for foreign and domestic automobiles and trucks. Readily identifiable and easily replaced, this fuse can be specified for a variety of low voltage electronic applications. Specification ATOF (R) Blade Fuses ATO (R) Ag (Silver plated) Blade Fuses Time-Current Characteristic Curves ATOF (R) (Tin Plated) Voltage Rating: 32 VDC Interrupting Rating: 1000A @ 32 VDC *Component Level Temperature Range: -40C to +105C **System Level Temperature Range: -40C to +85C 105C and 85C are typical system level temperature requirements. Terminals: Sn plated zinc alloy Housing Material: PA66 Complies with: SAE J1284,ISO 8820-3 UL Listed: File AU1410 CSA Certified: File No. 29862 ATO Ag (Silver Plated) 32 VDC 1000A @ 32 VDC -40C to +125C -40C to +105C Ag plated zinc alloy PA66 SAE J1284,ISO 8820-3 File AU1410 File No. 29862 Time-Current Characteristics % of Rating Package Size Current Rating Opening Time Min / Max (s) 100 35A & 40A 360,000 s / - 0287xxx.PXCN 2000 110 1A-30A 360,000 s / - 0287xxx.U 500 0287xxx.H 100 135 1A & 2A 3A-40A 350 ms / 600 s 0.750 s / 600 s 0287xxx.L 50 Ordering Information Part Number ATO (R) Ag Fuse 0287xxx.PXS 2000 160 1A-40A 250 ms / 50 s 200 1A & 2A 3A-40A 100 ms / 5.0 s 0.150 s / 5.0 s 350 1A & 2A 3A-40A 20 ms / 500 ms 80 ms / 500 ms 600 1A-30A 35A & 40A - / 100 ms - / 150 ms Ratings Part Number Temperature Rerating Curve Current Rating (A) Housing Material Color Typ. Voltage Drop (mV) Cold Resistance (m) I2t (A2s) 0.4 0287001._ 1 176 123 0287002._ 2 141 53.5 1.4 0287003._ 3 137 31.1 7.4 0287004._ 4 136 22.8 14 0287005._ 5 128 17.85 26 028707.5_ 7.5 116 10.91 60 0287010._ 10 109 7.70 115 0287015._ 15 102 4.80 340 0287020._ 20 98 3.38 520 0287025._ 25 92 2.52 1080 0287030._ 30 84 1.97 1510 0287035._ 35 87 1.61 2280 0287040._ 40 96 1.44 3310 Dimensions Dimensions in mm *Component Level Temperature = the maximum ambient temperature that a single fuse will survive. This does not factor-in the heat from a populated fuse box, but does include the heat from the current load with the proper rerating. **System Level Temperature represents the ambient temperature of the fuse box at a location within the vehicle. The temperature within a populated fuse box (in a given location) will be higher. The limiting factor is the plating. Sn-plating's temperature limit is 130C, and Ag-plating allows up to 150C at the terminal interface. Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 7 littelfuse.com Blade Fuses MAXI Blade Fuses Rated 32V The MAXI(R) fuse uses "Diffusion Pill Technology" to provide predictable time delay characteristics and low heat dissipation. MAXI Blade Fuses Specification MAXI MAXI Sn (Silver Plated) (Tin Plated) Voltage Rating: 32 VDC32 VDC Interrupting Ratings: 1000A @ 32 VDC 1000A @ 32 VDC *Component Level Temperature Range: -40C to +125C -40C to +105C **System Level Temperature Range: -40C to +105C -40C to +85C 105C and 85C are typical system level temperature requirements. Terminals: Ag plated zinc alloy Sn plated zinc alloy Housing Material: PA66 PA66 Complies with: SAE J 1888, SAE 2576, SAE J 1888, SAE 2576, ISO 8820-3:2002(E) ISO 8820-3:2002(E) Ordering Information Package Size % of Rating Opening Time Min / Max (s) 0299xxx.ZXNV 1200 100 360,000 s / - 0299xxx.L 50 135 60 s / 1,800 s 0299xxx.TXN 10 200 2 s / 60 s 350 0.20 s / 7 s 600 0.040 s / 1 s Part Number MAXI Sn Fuse (tin plated) Time-Current Characteristic Curves Time-Current Characteristics MAXI Sn Fuse 0299xxx.ZXT 1200 Ratings Part Number Current Rating (A) Housing Material Color Typ. Voltage Drop (mV) Cold Resistance (m) I2t (A2s) 0299020._ 20 76 3.10 1100 0299025._ 25 75 2.39 2087 0299030._ 30 77 1.95 4070 0299035._ 35 75 1.71 6032 0299040._ 40 75 1.42 8450 0299050._ 50 73 1.10 11300 0299060._ 60 77 0.89 15300 0299070._ 70 61 0.64 21200 0299080._ 80 62 0.54 43600 Dimensions Temperature Rerating Curve Dimensions in mm *Component Level Temperature = the maximum ambient temperature that a single fuse will survive. This does not factor-in the heat from a populated fuse box, but does include the heat from the current load with the proper rerating. **System Level Temperature represents the ambient temperature of the fuse box at a location within the vehicle. The temperature within a populated fuse box (in a given location) will be higher. The limiting factor is the plating. Sn-plating's temperature limit is 130C, and Ag-plating allows up to 150C at the terminal interface. Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 8 Blade Fuses MAXI Blade Fuses Rated 58V The MAXI(R) style fuse for use in 42V Systems. Same Time-Current characteristic as the 32V MAXI fuse using "Diffusion Pill Technology" to provide predictable time delay characteristics and low heat dissipation. Fits into standard MAXI(R) fuse sockets. Has a rejection feature to prevent fuses with lower voltage rating from being wrongfully inserted into the circuit. Current rating 20A - 80A @58 VDC max. Specifications Voltage Rating: 58 VDC Interrupting Ratings: 1000A @ 58 VDC *Component Level Temperature Range: -40C to +125C **System Level Temperature Range: -40C to +105C 105C is a typical system level temperature requirement. MAXI Blade Fuses Terminals: Ag plated zinc alloy Housing Material:PA66 Complies with: SAE J 1888, SAE 2576 ISO 8820-3:2002(E) Ordering Information Part Number Time-Current Characteristics Package Size % of Rating 1200 100 360,000 s / - 135 60 s / 1,800 s 0999xxx.ZXN Time-Current Characteristic Curves Ratings Opening Time Min / Max (s) 200 2 s / 60 s 350 0.20 s / 7 s 600 0.040 s / 1 s Typ. Voltage Drop (mV) Cold Resistance (m) I2t (A2s) 20 76 3.10 1100 0999025._ 25 75 2.39 2087 0999030._ 30 77 1.95 4070 0999035._ 35 75 1.71 6032 0999040._ 40 75 1.42 8450 0999050._ 50 73 1.10 11300 0999060._ 60 77 0.89 15300 0999070._ 70 61 0.64 21200 0999080._ 80 62 0.54 43600 Part Number Current Rating (A) 0999020._ Dimensions Housing Material Color Temperature Rerating Curve Dimensions in mm *Component Level Temperature = the maximum ambient temperature that a single fuse will survive. This does not factor-in the heat from a populated fuse box, but does include the heat from the current load with the proper rerating. **System Level Temperature represents the ambient temperature of the fuse box at a location within the vehicle. The temperature within a populated fuse box (in a given location) will be higher. The limiting factor is the plating. Sn-plating's temperature limit is 130C, and Ag-plating allows up to 150C at the terminal interface. Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 9 littelfuse.com Cartridge Fuses littelfuse.com MCASE+ Cartridge Fuses Rated 32V 11 MCASETM Cartridge Fuses Rated 32V 13 Low Profile JCASE(R) Fuse Rated 58V 14 JCASE(R) Fuse Rated 32V 15 10 Cartridge Fuses MCASE+TM Cartridge Fuses Rated 32V The Unslotted MCASE+TM Fuse is a cartridge style fuse up to 40A with female terminals for 2.8 mm male terminals. The Slotted MCASE+TM Fuse is available in amperages up to 60A and can mate with larger male terminals (e.g., 6.3mm) or even mount directly to onto a busbar. It has a miniaturized footprint for optimal usage of space. It is a time delayed fuse and can handle inrush currents. Specifications Voltage Rating: Interrupting Ratings: Operating Temperature Range: Housing Material: Cover Material: Fuse Insertion Force: Extraction Force: Conforms to: MCASE+TM Cartridge Fuses 32 VDC 1000A @ 32 VDC -40C to +125C PPA-GF33 PA66 50N (11.2lbf) Typical 4N Min. (0.9 lb). | 24.5N Max. (5.5 lb) SAE 2741 and ISO 8820-4 in reference to electrical, mechanical and environmental performance requirements Time-Current Characteristics Ordering Information Package Size % of Rating 0695xxx.PXPS Slotted 2000 110 100hrs / - 0695xxx.PXP Unslotted 2000 135 60s / 1800s 200 2s / 60s Part Number Ratings Part Number Time-Current Characteristic Curves 50A 60A 25A 40A 30A 15A 1000 20A MCASEFUSETIMECURRENTCHARACTERISTICCURVES 100 Current Rating* Housing (A) Material Color Type 0695015.PXP Unslotted 15 0695020.PXP Unslotted 20 0695025.PXP Unslotted 25 0695030.PXP Unslotted 30 0695040.PXP Unslotted 40 0695015.PXPS Slotted 15 0695020.PXPS Slotted 20 0695025.PXPS Slotted 25 0695030.PXPS Slotted 30 0695040.PXPS Slotted 40 0695050.PXPS Slotted 50 0695060.PXPS Slotted 60 Temperature Rerating Curve TIMEINSECONDS 10 Opening Time Min / Max 350 0.2s / 7s 600 0.04s / 1s Max. Voltage Drop (mV) Cold Resistance (m) I2t (A2s) 125 125 125 120 120 125 125 125 120 120 120 120 5.1 3.4 2.5 1.8 1 310 1300 5.1 310 750 970 1550 3.4 750 2.5 1300 1.8 970 1.1 1550 0.8 4000 0.6 8500 * The performance of the male terminal is critical to ensuring the fuse will function as designed. The current-carrying capability of the mating terminal must be verified to ensure proper system operation. Rerating Factor 110 % 105 % 1 100 % 0.1 95 % 90 % 0.01 10 100 1000 CURRENT IN AMPERES CURRENTINAMPERES 10000 85 % -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 Temperature [oC] Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 11 littelfuse.com Cartridge Fuses MCASE+TM Cartridge Fuses Rated 32V Dimensions Dimensions in mm Slotted JCASE(R) Fuse LP JCASE(R) Fuse MCASE+TM Fuse Unslotted Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 12 Cartridge Fuses MCASETM Cartridge Fuses Rated 32V The MCASETM is a cartridge style fuse with female terminals for 2.8 mm male terminals. It has a miniaturized footprint for optimal usage of space. It is a time delayed fuse and can handle in rush currents. Specifications Voltage Rating: Interrupting Ratings: Operating Temperature Range: Housing Material: Cover Material: Insertion Force: Extraction Force: Conforms to: MCASETM Cartridge Fuses 32 VDC 1000A @ 32 VDC -40C to +125C PPA-GF33 PA66 50N (11.2lbf) Typical 4N Min. (0.9 lb). | 24.5N Max. (5.5 lb) SAE 2741 and ISO 8820-4 in reference to electrical, mechanical and environmental performance requirements Ordering Information Part Number JCASE LP JCASE MCASETM Time-Current Characteristics Package Size % of Rating 0695xxx.PX4 2000 110 100 hrs / - 0695xxx.U 500 135 60 s / 1800 s 0695xxx.L 50 200 2 s / 60 s 350 0.2 s / 7 s 600 0.04 s / 1 s Ratings Dimensions Current Rating (A) Part Number Dimensions in mm Housing Material Color Opening Time Min / Max (s) Max. Voltage Drop (mV) Cold Resistance (m) I2t (A2s) 0695015._ 15 125 4.9 160 0695020._ 20 125 3.5 530 0695025._ 25 125 2.3 1140 0695030._ 30 120 1.8 970 0695040._ 40 120 1.3 2950 Time-Current Characteristic Curves Temperature Rerating Curve Rerating Factor 110 % 105 % 100.0 100 % 95 % 10.0 15 20 90 % Time (s) 25 30 40 85 % -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 Temperature [oC] 1.0 0.1 0.0 1 10 100 1000 Current (A) Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 13 littelfuse.com Cartridge Fuses Low Profile JCASE (R) Cartridge Fuses Rated 58V The Low Profile JCASE(R) fuse has similar performance characteristics as the standard JCASE(R) fuse. The lower overall height reduction allows for more space and weight savings and also allows for a shorter male blade terminal, saving additional weight and material savings in fuse box designs. Specifications Voltage Rating: Interrupting Rating: Operating Temperature Range: Housing Material: Cover Material: Insertion Force: Extraction Force: Conforms to: Low Profile JCASE (R) Cartridge Fuses Time-Current Characteristic Curves Part Number 50A 40A 60A 30A 25A 20A Time-Current Characteristics Ordering Information LOW PROFILE (LP) JCASE FUSE TIME-CURRENT CHARACTERISTIC CURVES 1000 58 VDC 1000A @ 58 VDC -40C to + 125C PPA-GF13 PA66 53N Max. (12 lb.) 9N Min (2 lb.) SAE 2741 and ISO 8820-4 except for the life test - LF specification is 100-hours at 100% of rated current Package Size % of Rating Opening Time Min / Max (s) 0895xxx.Z 2000 100 360,000 s / - 0895xxx.U 500 135 60 s / 1800 s 0895xxx.T 10 200 4 s / 60 s 350 0.200 s / 7 s 600 0.040 s / 1 s 100 Ratings Part Number TIME IN SECONDS 10 1 0.1 Current Rating (A) Housing Material Color Max. Voltage Drop (mV) Cold Resistance (m) I2t (As) 0895020_ 20 125 4.48 400 0895025_ 25 125 3.39 680 0895030_ 30 125 2.68 1780 0895040_ 40 125 1.89 5470 0895050_ 50 125 1.08 4880 0895060_ 60 125 0.83 9600 Corresponding holder see Section "Fuse Holders." 0.01 10 100 1000 10000 CURRENT IN AMPERES Littelfuse, Inc. Dimensions Confidential October 2013 Temperature Rerating Curve Dimensions in mm Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 14 Cartridge Fuses JCASE (R) Cartridge Fuses Rated 32V The JCASE(R) is a cartridge style fuse with female terminal design. JCASE(R) provides both increased time delay and low voltage drop to protect high current circuits. JCASE(R) has the ability to handle inrush currents. Specifications Voltage Rating: Interrupting Rating: Operating Temperature Range: Housing Material: Housing Material (60A): Cover Material: Insertion Force: Extraction Force: Complies with: JCASE (R) Cartridge Fuses 40A Time-Current Characteristics Ordering Information Package Size % of Rating Opening Time Min / Max (s) 0495xxx.ZXA 2200 110 360,000 s / - 0495xxx.UXA 500 135 60 s / 1800 s 0495xxx.TXA 10 200 4 s / 60 s 350 0.200 s / 7 s 600 0.040 s / 1 s Part Number 50A 60A 25A 30A 20A Time-Current Characteristic Curves 1000 32 VDC 1000A @ 32 VDC -40C to + 125C PA-GF13HS PA-GF13 PC 53N max. (12 lb.) 9N min. (2 lb.) SAE 2741, ISO 8820-4 100 Ratings Part Number 10 1 Current Rating (A) Housing Material Color Typ. Voltage Drop (mV) Cold Resistance (m) I2t (As) 1750 0495020_ 20 106 4.29 0495025_ 25 101 3.28 3220 0495030_ 30 91 2.12 1480 0495040_ 40 87 1.30 3650 0495050_ 50 88 0.99 8750 0495060_ 60 87 0.76 19500 0.1 Dimensions 0.01 Dimensions in mm 10 100 1000 10000 Temperature Rerating Curve Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 15 littelfuse.com High Current Fuses littelfuse.com ZCase Masterfuse 17 Masterfuse18 ZCase Single Starter 19 MEGA(R) Fuse Rated 32V 21 MEGA(R) Low Temperature Fuse Rated 32V 22 UL Recognized Mega(R) Fuse Rated 32V 24 MIDI(R) Style Bolt-down Fuse Rated 32V 25 BF1 Fuse Rated 32V 27 BF1 Fuse Rated 58V 29 BF2 Fuse Rated 32V 30 BF2 Fuse Rated 58V 31 CF Fuse Rated 58V 32 Fuse Strips 33 16 High Current Fuses ZCASE Masterfuse The ZCASE Masterfuse product is the smallest high current distribution product in the industry. It utilizes the Z-Axis effectively to create a compact design which takes one third the footprint of a traditional solution. This package allows the user to replace multiple discrete fuses in a power distribution box with a single component, thus eliminating additional bolts, bus bars and interconnects. The output bolt is integrated into the fuse creating a reliable interface to the mating terminal due to its high torque withstandablity. Keying features are available on each bolt position to ensure the correct mating ring terminal is used during assembly. The solution can also be connectorized to mate to high current terminals. This compact design enables the integration of the high current distribution into the main junction box due to its small footprint. This eliminates the need for a separate fuse box for high current distribution. By reducing the number of components required, overall system costs are reduced. ZCASE Masterfuses The ZCASE Masterfuse product is available as a standard design with customized fuse ratings. The modular manufacturing approach enables a wide range of configurations within a product family. In addition, the form factor can be fully customized for specific applications to further optimize the system. Contact Littelfuse to review your application needs. Features and Benefits: Miniaturization: Compact design enables a 2/3 footprint reduction when compared to a traditional solution. Integration: Enables the integration of the prefuse function into the main junction box due to its small footprint. Specifications Mating Terminal Options:M10, M8, M6, M5 bolt-down connections or female terminals Operating Temperature Range:-40C to 125C Housing Material: PPA-GF33HS Fuse Ratings Available:30-500A Voltage Rating: 32Vdc Materials:Copper terminals (silver or tin plating options available) Complies with: ISO 8820-5 Ordering Information Part Number Description Package Size 05980015Z-CN MFUSE ZCASE 32V 2-Way 125A - 200A 200 05980016Z-CN MFUSE ZCASE 32V 2-Way 125A - 125A 200 05980017Z-CN MFUSE ZCASE 32V 2-Way 275A - 200A 200 05980019Z MFUSE ZCASE 32V 1-MEGA + 4-MIDI 100 05980020Z MFUSE ZCASE 32V 2-MEGA + 2-MIDI 50 Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 17 littelfuse.com High Current Fuses MASTERFUSE The MASTERFUSE product is a configurable fuse solution combining several different fuse types (i.e. MEGA and MIDI) and ratings in one compact package. This fuse package allows the user to replace multiple discrete fuses in a power distribution box with a single component, thus eliminating additional bolts, bus bars, and interconnects that are currently used. By reducing the number of connections required, overall system reliability is increased while cost is decreased. Each MASTERFUSE is customized to the user's application creating an optimized circuit protection package. Contact Littelfuse to review your application needs. Features and Benefits: Masterfuses Increased Reliability: due to reduced number of terminal interfaces System Cost Savings: Material savings due to reduced number of components required. Assembly cost savings due to reduced number of operations required for installation. Fuse Array Customization: Ability to mix different fuse types (i.e. MEGA, MIDI, etc.) in one compact package Termination Options: Ability to mate to female terminals to enable "bolt-less" design Marking: Custom marking options available Specifications Mating Terminal Options:M10, M8, M6, M5 bolt-down connections or female terminals Operating Temperature Range:-40C to 125C Housing Material: PPA-GF33HS Fuse Ratings Available:30A-250A Full Range 300A-600A Short Circuit Voltage Rating: 32Vdc Materials:Copper terminals (silver or tin plating options available) Complies with: ISO 8820-5 Note: Short circuit protected fuses have a limited continious current. Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 18 High Current Fuses ZCASE Single MEGA/Starter Fuse The Single ZCASE is a Minimal Footprint Bolt Down Fuse with a wide rating range up to 600A in the same packaging size. The Time Current characteristic is similar to the well known MEGA Design and can used as full wire protection until 250A. Higher ratings mostly used for typically Starter Fuse application as a protector fuse. The fuse design is optimized for a one bolt connection M6 (40A - 250A) or M8 (300A - 600A) and can used directly on a battery post or busbar connection. Littelfuse is offering a complete solution for the necessary stud and different busbar connections including some battery clamps. Specifications ZCASE Single Mega/Starter Fuse Operating temperature: Housing Material: Insulating Tube: Terminal: Voltage Rating: Interrupting Rating: Mounting Torque M6: Mounting Torque M8: -40 to 125C PPA-GF33HS Out of ceramic Tin plated Copper 32V DC 2000A @ 32V VDC 9.8Nm1.4Nm 14Nm2Nm Ordering Information Part Number Time-Current Characteristics Package Size 3298XXX.ZXSTA 480 3298XXX.Z 480 3298XXX.H 100 Opening Time Min / Max (s) % of Rating 40A - 250A 300A - 600A 50 -/- 14,400 / - 100 14,400 / - -/- 135 120 / 1800 -/- 200 1 / 15 1 / 40 350 0.300 / 5 0.300 / 5 500 -/- 0.100 / 1 (only for 500A) 600 0.100 / 1 0.100 / 1 (except 600A) Ratings Part number Current Rating Wire size (A) (mm2) Max. Voltage Drop (mV) Average Cold Resistance (m) It (A2s) 3298040._ 40 4 110 1.53 5000 3298060._ 60 6 110 0.98 18000 3298080._ 80 10 110 0.715 15500 3298100._ 100 16 110 0.57 31000 3298125._ 125 16 110 0.39 45000 3298150._ 150 25 110 0.32 75000 3298175._ 175 25 110 0.26 140000 3298200._ 200 35 110 0.231 235000 3298225._ 225 35 110 0.175 95000 3298250._ 250 50 110 0.167 160000 3298300.ZXSTA 300 35 70 0.128 310000 3298350.ZXSTA 350 35 70 0.103 570000 3298400.ZXSTA 400 50 70 0.084 870000 3298500.ZXSTA 500 50 70 0.065 1550000 3298600.ZXSTA 600 50 70 0.049 3000000 3298900._ SHUNT 50 - - - Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 19 littelfuse.com High Current Fuses ZCASE Single Mega/Starter Fuse Dimensions Examples of Single ZCASE Applications Dimensions in mm 1 2 3 No. 1 2 3 Description Single ZCASE Mega Busbar PN: 3298002ZXBB Insulting Bolt M8 PN: 3298001ZXM8 Please contact your Littelfuse representative for application support and information on mating hardware. Time-Current Characteristic Curves Reference Time-Current Characteristic Curves (Recorded@23) Reference Time-Current Characteristic Curves (Recorded@23) All ZCASE Starters T/C curves were performed on the left or right side of the metal bar as shown in pictures above. A 50mm Cu wire was mounted at the mid hole (M8) of the metal bar as current feed. Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 20 High Current Fuses MEGA(R) Low Temperature Fuse Rated 32V The MEGA(R) Fuse is designed for high current circuit protection up to 275A with "Diffusion Pill Technology." The MEGA(R) Fuse also provides time delay characteristics. Designed and patented by Littelfuse, the MEGA(R) Fuse is ideal for battery and alternator protection application and other heavy gauge cables requiring ultra-high current protection. Specifications Interrupting Rating: 2000A @ 32 VDC Voltage Rating: 32 VDC Operating Temperature Range: -40C to + 125C Housing Material: PPA-GF33HS Terminals:Copper (Silver plated copper available) M8 bolts Mounting Torque: 12-18 Nm M8 MEGA (R) Low Temperature Fuses Time-Current Characteristics Ordering Information Part Number Rating Package Bolt Hole Plating Size Qty 0298125.ZXBLT 125 500 Ag 2 0298xxx.ZXEH-LT 150-275 500 None 2 0298xxx.UX1M8LT 150-275 500 None 1 % of Rating Opening Time Min / Max (s) 125 150-275 100 4 hrs / - 4 hrs / - 135 120 s / 1800 s 120 s / 1800 s 200 1 s / 50 s 1 s / 150 s 350 0.300 s / 5 s 0.300 s / 5 s 600 0.100 s / 1 s 0.100 s / 1 s Ratings Time-Current Characteristic Curves 1000 125 150 175 200 225 100 250 Part Number Current Rating (A) Font Color Typ. Voltage Drop (mV) Cold Resistance (m) I2t (A2s) 57000 A 0298125.ZXBLT 125 67 0.330 0298150.ZXEH-LT 150 62 0.258 59000 A 0298175.ZXEH-LT 175 65 0.232 123000 A 0298200.ZXEH-LT 200 61 0.214 140000 A 0298225.ZXEH-LT 225 57 0.177 317000 A 0298250.ZXEH-LT 250 54 0.144 637000 A 0298275.ZXEH-LT 275 53 0.122 800000 A 275 TIME IN SECONDS Dimensions Temperature Rerating Curve Dimensions in mm 10 29.2 (1.15") 1 9.9 (.39") 0.1 100 1000 10000 CURRENT IN AMPERES Last figure of article no. = packaging code Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 21 littelfuse.com High Current Fuses MEGA(R) and MEGA(R) Clear Top Fuse Rated 32V The MEGA(R) Fuse is designed for high current circuit protection up to 500A with "Diffusion Pill Technology." The MEGA(R) Fuse also provides time delay characteristics. Designed and patented by Littelfuse, the MEGA(R) Fuse is ideal for battery and alternator protection application and other heavy gauge cables requiring ultra-high current protection. Specifications MEGA (R) Fuses Interrupting Rating: 2000A @ 32 VDC Voltage Rating: 32 VDC Operating Temperature Range: -40C to + 125C Housing Material: PPA-GF33HS Clear Top Housing Material: PES (top) PPA-GF33HS (bottom) Terminals:Copper (Silver plated copper available) M6 or M8 bolts available Mounting Torque: 8-14 Nm M6 12-18 Nm M8 Complies with: ISO 8820-5 Ordering Information MEGA (R) Clear Top Housing Fuse Time-Current Characteristics Package Bolt Bolt Hole Plating Size Size Qty Part Number Rating 0298xxx.ZXEH 80 - 250 500 None M8 2 0298xxx.ZXH 300 - 500 500 None M8 2 0298xxx.UX1M8 80 - 500 500 None M8 1 0298xxx.ZXB 40 - 250 500 Ag M8 2 0298xxx.ZXA 80 - 500 500 None M6 2 M8 2 MEGA Clear Top Housing Material Fuse 0298xxx.UXT 40 - 250 500 None % of Rating Opening Time Min / Max (s) 40-250 300-500 75 -/- 14,400 s / - 100 14,400 s / - -/- 135 120 s / 1800 s -/- 200 1 s / 15 s 1 s / 15 s 350 0.300 s / 5 s 0.500 s / 5 s 600 0.100 s / 1 s 0.100 s / 1 s I2t (A2s) Ratings Part Number Current Rating (A) Font Color* Typ. Voltage Drop (mV) Cold Resistance (m) 0298040._1 40 - 132 2.510 8700 0298060._1 60 - 119 1.504 21000 0298080._ 80 87 0.720 21500 0298100._ 100 87 0.562 31100 0298125._ 125 80 0.423 57800 0298150._ 150 92 0.352 100000 0298175._ 175 86 0.294 168000 0298200._ 200 83 0.257 204000 0298225._ 225 82 0.222 257000 0298250._ 250 82 0.201 389000 2 0298300._ 300 74 ** 0.167 315000 0298350._2 350 68 ** 0.138 500000 0298400._2 400 64 ** 0.126 610000 2 0298450._ 450 60 ** 0.112 1050000 0298500._2 500 58 ** 0.092 2050000 Note 1: Not mentioned in ISO standards Note 2: Short Circuit Protector only * 0298xxx.ZXB has white font color on all ratings. ** Voltage Drop measurements for short circuit protectors taken at 75% of rated current. Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 22 High Current Fuses MEGA(R) Fuse Rated 32V Time-Current Characteristic Curves Dimensions Dimensions in mm M6: 6.60 (.26") M8: 8.64 (.34") 29.2 (1.15") 9.9 (.39") 40-250A 10.72 (.422") 300-500A 40-250A 1.83 (.072 ) 300-500A Temperature Rerating Curve Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 23 littelfuse.com High Current Fuses UL Recognized MEGA(R) Fuses Rated 32V The MEGA(R) Fuse is designed for high current circuit protection with "Diffusion Pill Technology." The MEGA(R) Fuse also provides time delay characteristics. Designed and patented by Littelfuse, the MEGA(R) Fuse is ideal for battery and alternator protection application and other heavy gauge cables requiring ultra-high current protection. Specifications Interrupting Rating: 2000A @ 32 VDC Voltage Rating: 32 VDC Operating Temperature Range: -40C to + 125C Housing Material: PPA-GF30FR Terminals:Copper M8 bolts holes Mounting Torque: 12-18 Nm M8 Complies with: ISO 8820-5 ,UL 248 Special Purpose Fuses UL Recognized MEGA (R) Fuses Ordering Information 7 Time-Current Characteristic Curves Time-Current Characteristics Part Number Package Size 0298xxx.ZXEH-UL 500 Opening Time Min / Max (s) % of Rating 80A-175A 75 -/- 100 14,400 s / - 135 120 s / 1800 s 200 1 s / 15 s 350 0.300 s / 5 s 500 -/- 600 0.100 s / 1 s Ratings Typ. Voltage Drop (mV) I2t (A2s) 80 87 21500 0298100.ZXEH-UL 100 87 31100 0298125.ZXEH-UL 125 80 57800 0298150.ZXEH-UL 150 92 100000 0298175.ZXEH-UL 175 62 168000 Part Number Current Rating (A) 0298080.ZXEH-UL Dimensions Font Color Temperature Rerating Curve Dimensions in mm 29.2 (1.15") 9.9 (.39") Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 24 High Current Fuses MIDI(R), Clear MIDI(R), and One Hole MIDI(R) Style Bolt-down Fuse Rated 32V This MIDI(R) style fuse offers a bolt-on space saving fuse for high current wiring protection and provides time delay characteristics with "Diffusion Pill Technology". The MIDI(R) was designed and patented by Littelfuse. Specifications Interrupting Rating: Voltage Rating: Operating Temperature Range: Black Housing Material: Clear Housing Material: Terminal: Mounting Torque M5: Mounting Torque M6: Complies with: MIDI (R) Fuses Clear MIDI (R) Fuses One Hole MIDI (R) Fuses (transparent nylon composite cover) Ordering Information Opening Time Min / Max (s) 30-125A 75 100 -/- 360,000 s / - Package Size Part Number Time-Current Characteristics % of Rating 1000A @ 32 VDC 32 VDC -40C to + 125C PA-GF25FR PA-6/66 Tin plated Copper 4.5 Nm +/- 1Nm 6.0 Nm +/- 1Nm ISO 8820-5, UL 248 Special Purpose Fuses 150-200A Housing Color Bolt Size Bolt Hole Qty Mfg Location 0498xxx.M 1000 Black M5 2 Mexico 0498xxx.M-CN 1000 Black M5 2 China 0498xxx.H 100 Black M5 2 Mexico 0498xxx.MXM6 1000 Black M6 2 Mexico -/- 0498xxx.MXM6-CN 1000 Black M6 2 China 0498xxx.MX1M5 1000 Black M5 1 Mexico 360,000 s / - 110 14,400 s / - -/- 150 90 s / 3,600 s -/- 200 3 s / 100 s 1 s / 15 s 300 350 0.3 s / 3 s -/- -/- 0.3 s / 5 s 500 0.1 s / 1 s 0.1 s / 1 s 0498xxx.MX1M5-CN 1000 Black M5 1 China 0498xxx.MX1M6 1000 Black M6 1 China 0498xxx.MX1M6-CN 1000 Black M6 1 China 0498xxx.MXT 1000 Clear M5 2 Mexico 0498xxx.MXT-CN 1000 Clear M5 2 China 0498xxx.MXTM6 1000 Clear M6 2 Mexico 0498xxx.MXTM6-CN 1000 Clear M6 2 China * Materials manufactured in Asia are produced to the same specifications as materials manufactured in North America, and meets the same test requirements. Multiple production locations are for capacity expanison only. Ratings Part Number 0498023._2 0498030._2 0498040._ 0498050._ 0498060._ 0498070._ 0498080._ 0498100._ 0498125._2 0498150._1,2 0498175._1,2 0498200._1,2 Current Rating (A) 23 30 40 50 60 70 80 100 125 150 175 200 Font Color Typ. Voltage Drop max. (mV) Cold Resistance (m) I2t (A2s) 90 65 65 65 68 70 58 60 71 77 3.43 2.06 1.398 1.025 0.865 0.72 0.541 0.457 0.394 0.323 0.285 0.261 1,800 4,200 10,000 13,000 21,700 24,000 24,600 51,300 73,200 81,900 100,000 125,000 77 77 Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 25 littelfuse.com High Current Fuses MIDI(R), Clear MIDI(R), and One Hole MIDI(R) Style Bolt-down Fuse Rated 32V Dimensions Dimensions in mm Temperature Rerating Curve MIDI Rerating Curve 115 Rerating Factor (% Rated Current) 110 105 100 95 90 85 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 Ambient Temperature (C) "B" mm (inch) "C" mm (inch) 0498030._ 0.41 (0.016) 4.0 (0.157) 8.0 (0.315) 0498040._ 0.41 (0.016) 4.0 (0.157) 8.0 (0.315) 0498050._ 0.41 (0.016) 4.0 (0.157) 8.0 (0.315) 0498060._ 0.41 (0.016) 4.0 (0.157) 8.0 (0.315) 0498070._ 0.41 (0.016) 4.0 (0.157) 8.0 (0.315) 0498080._ 0.41 (0.016) 4.0 (0.157) 8.0 (0.315) 0498100._ 0.63 (0.025) 4.3 (0.169) 8.3 (0.327) 0498125._ 0.63 (0.025) 4.3 (0.169) 8.3 (0.327) 0498150._ 0.63 (0.025) 4.3 (0.169) 8.3 (0.327) 0498175._ 0.63 (0.025) 4.3 (0.169) 8.3 (0.327) 0498200._ 0.63 (0.025) 4.3 (0.169) 8.3 (0.327) Time-Current Characteristic Curves 30A 40A 50A 60A 70A 80A 100A 125A 150A 175A 200A "A" mm (inch) 1000 100 TIME IN SECONDS Part Number 10 1 0.1 0.01 10 100 1000 10000 Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 26 High Current Fuses BF1 and One-Hole BF1 Fuse Rated 32V This BF1 fuse is rated at 32V and offers a bolt-on fuse for high current wiring protection. Current rating 23A - 200A; with transparent housing material for easy detection of blown fuses. One-Hole BF1 fuses have a current rating 60-125A. Specifications BF1 Fuses Operating Temperature: -40 to 125 degrees C Housing Material: PET-GF30 Clear Housing Material: PES Terminals: Copper alloy, gal. Sn 2 x M5 or M6 bolts, distance 30 mm Mounting Torque M5: 4.5 Nm +/- 1Nm Mounting Torque M6: 6.0 Nm +/- 1Nm Interrupting Rating: 23A & 30A: 1000A @32 VDC 40A - 150A: 2000A @32 VDC 200A: 1500A @32 VDC Complies with: ISO 8820-5, UL 248 Special Purpose Fuses Ordering Information One Hole BF1 Fuses Part Number Package Size 153.5631.xxx2 1000 Time-Current Characteristics Bolt Bolt Hole Size Qty Ratings M5 2 30A-200A Opening Time Min / Max (s) % of Rating 23-150A Fuses 150-200A Short Circuit Protectors 153.5631.xxx1 10 M5 2 30A-200A 75 -/- 360,000 s / - 153.7010.xxx2 1000 M6 2 30A-150A 100 360,000 s / - -/- 153.7000.xxx2 500 M6 2 200A 110 14,400 s / - -/- 153.0010.xxx2 1000 M6 1 60A-125A 150 90 s / 3,600 s -/- 153.0020.xxx2 500 -- 0 30A-200A 200 3 s / 100 s 1 s / 15 s 300 0.300 s / 3 s -/- Ratings 350 -/- 0.300 s / 5 s 500 0.100 s / 1 s -/- 600 -/- 0.100 s / 1 s Typ. Voltage Cold Resistance Drop (m) (mV) M5 M6 Current Rating (A) 153.5631.523_1,2 - 23 105 153.5631.530_ 153.7010.530_ 30 105 2.70 5,100 153.5631.540_ 153.7010.540_ 40 90 1.56 6,800 153.5631.550_ 153.7010.550_ 50 80 1.03 6,900 153.5631.560_ 153.7010.560_ 60 75 0.75 16,200 153.5631.570_ 153.7010.570_ 70 70 0.64 22,000 153.5631.580_ 153.7010.580_ 80 70 0.55 25,600 153.5631.610_ 153.7010.610_ 100 70 0.44 42,500 153.5631.612_ 153.7010.612_ 125 70 0.34 62,500 153.5631.615_1 153.7010.615_1 150 70 0.29 83,400 153.5631.620__3 153.7000.620__3 200 70 0.24 126,000 Part Number Housing Material Color 3.50 I2t (A2s) 1,400 Corresponding holder see Section "Fuse Holders." Note 1: not mentioned in ISO standard Note 2: Not UL rated Note 3: Short Circuit Protector only Note 4: For 1-Hole and No-Hole values, refer to 2-Hole version values Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 27 littelfuse.com High Current Fuses BF1 and One-Hole BF1 Fuse Rated 32V Dimensions Pre-Arcing Time-Limits Dimensions in mm Derating Individual derating curves by rating can be ordered through your Littelfuse contact person. 23 A - 150 A: FI = 1.25 (max. operating current: 0.8 x Irat at 23C) 200 A: FI = 2.00 (max. operating current: 0.5 x Irat at 23C) Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 28 High Current Fuses BF1 Fuses Rated 58V This BF1 fuse is rated at 58V and offers a bolt-on fuse for high current wiring protection. Current rating 30A - 200A; with transparent housing material for easy detection of blown fuses. Specifications Operating temperature: Housing Material: Clear Housing Material: Terminals: Mounting Torque M5: Mounting Torque M6: Interrupting Rating: Complies with: -40 to 125 degrees C PET-GF30 PES Copper alloy, gal. Sn 2 x M5 or M6 bolts, distance 30 mm 4.5 Nm +/- 1Nm 6.0 Nm +/- 1Nm 1000A @ 58 VDC ISO 8820-5, UL 248 Special Purpose Fuses Dimensions Dimensions in mm Ordering Information Time-Current Characteristics Part Number Package Size 142.5631.xxx2 500 M5 2 142.7010.xxx2 500 M6 1 0 142.7020.xxx2 500 Bolt Bolt Hole Size Qty N/A % of Rating Pre-Arcing Time-Limits Opening Time Min / Max (s) 30-150A Fuses 200A Short Circuit Protectors 75 -/- 360,000 s / - 100 360,000 s / - -/- 110 14,400 s / - -/- 150 90 s / 3,600 s -/- 200 3 s / 100 s 1 s / 15 s 300 0.300 s / 3 s -/- 350 -/- 0.300 s / 5 s 500 0.100 s / 1 s -/- 600 -/- 0.100 s / 1 s Ratings Cold Typ. Voltage Resistance Drop (m) (mV) Part Number M5 Part Number M6 Current Rating (A) 142.5631.53021 142.70xx.53021 30 105 2.70 5,100 142.5631.5402 142.70xx.5402 40 90 1.56 6,800 142.5631.5502 142.70xx.5502 50 80 1.03 6,900 142.5631.5602 142.70xx.5602 60 75 0.75 16,200 142.5631.5702 142.70xx.5702 70 70 0.64 22,000 142.5631.5802 142.70xx.5802 80 70 0.55 25,600 142.5631.6102 142.70xx.6002 100 70 0.44 42,500 142.5631.6122 142.70xx.6122 125 70 0.34 62,500 142.5631.6152 142.70xx.6152 150 70 0.29 83,400 142.5631.6202 142.70xx.6202 200 70 0.24 126,000 2 Housing Material Color I2t (A2s) Note 1: Not UL rated Note 2: Short Circuit Protector only 30 A - 150 A: FI = 1.25 (max. operating current:0.8 x Irat at 23C) 200 A: FI = 2.00 (max.operating current: 0.5 x Irat at 23C) Derating Individual derating curves by rating can be ordered through your Littelfuse contact person. Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 29 littelfuse.com High Current Fuses BF2 Fuses Rated 32V This BF2 fuse is rated at 32V and offers a bolt-on fuse for high current wiring protection. Current rating 100A - 500A; with transparent housing material for easy detection of blown fuses. Specifications Housing Material: Clear Housing Material: Terminal: Mounting Torque: Breaking Capacity: Complies with: PET-GF30 PES Copper alloy, gal. Sn 2 x M8 bolts, Distance 51 mm 12.0 Nm +/- 1Nm 100 A - 300 A: 2.000 A, 32V, DC 400 A - 500 A: 1.500 A, 32V, DC ISO 8820-5, UL 248 Special Purpose Fuses BF2 Fuses Ordering Information Part Number Time Current Characteristics Package Size % of Rating Standard M8 Holes 153.5395.xxxx 200 M6 Holes 153.7011.xxxx 200 Ratings Time-Current Characteristic Curves TIME-CURRENT CHARACTERISTIC CURVES (RECORDED@23C) Part Number M8 Holes 100A 125A 150A 175A 200A 225A 250A 300A 400A 500A 1000 TIME [s] 100 10 100A - 250A 300A - 500A 75 -/- 4h/- 100 4h/- -/- 135 120 s / 1,800 s -/- 200 1 s / 15 s 1 s / 15 s 350 0.300 s / 5 s 0.500 s / 5 s 600 0.100 s / 1 s 0.100 s / 1 s Current Rating (A) Part Number M6 Holes Opening Time Min / Max (s) Housing Color Typ. Voltage Drop Cold Resistance (mV) (m) I2t (A2s) 153.5395.610_ 153.7011.610_ 100 110 0.70 46,800 153.5395.612_ 153.7011.612_ 125 110 0.52 118,100 153.5395.615_ 153.7011.615_ 150 110 0.42 113,400 153.5395.617_ 153.7011.617_ 175 110 0.36 154,400 153.5395.620_ 153.7011.620_ 200 110 0.34 288,000 153.5395.622_ 153.7011.622_ 225 110 0.29 236,000 153.5395.625_ 153.7011.625_ 250 110 0.25 292,500 153.5395.630_* 153.7011.630_* 300 110 0.21 486,000 153.5395.640_* 153.7011.640_* 400 110 0.13 964,000 153.5395.650_* 153.7011.650_* 500 110 0.12 1,449,000 Last figure of article no. = packaging code Corresponding holder see Section "Fuse Holders." * Parts with asterisk are short circuit protectors only. 1 Dimensions Dimensions in mm 0,1 10 100 1000 10000 CURRENT [A] 100A-300A: FL=1,25 (max. operating current: 0,8 x Irat at 23C) 400A-500A: FL=2,00 (max. operating current: 0,5 x Irat at 23C) Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 30 High Current Fuses BF2 Fuses Rated 58V This BF2 fuse is rated at 58V and offers a bolt-on fuse for high current wiring protection. Current rating 100A - 300A; with transparent housing material for easy detection of blown fuses. Specifications Housing Material: Clear Housing Material: Terminal: Mounting Torque: Breaking Capacity: Complies with: PET-GF30 PES Copper alloy, gal. Sn 2 x M8 bolts, Distance 51 mm 12.0 Nm +/- 1Nm 1000A, 58V DC ISO 8820-5, UL 248 Special Purpose Fuses BF2 Fuses Time Current Characteristics Ordering Information Package Size 142.5395.xxxx 200 Ratings 100A 125A 150A 175A 200A 225A 250A 300A 400A 500A Time-Current Characteristic Curves TIME-CURRENT CHARACTERISTIC CURVES (RECORDED@23C) 1000 100 TIME [s] Part Number 10 Part Number Current Rating (A) 142.5395.6102 142.5395.6122 % of Rating Opening Time Min / Max (s) 100A - 250A 300A 75 -/- -/- 100 4h/- 4h/- 135 120 s / 1,800 s -/- 200 1 s / 15 s 1 s / 15 s 350 0.300 s / 5 s 0.500 s / 5 s 600 0.100 s / 1 s 0.100 s / 1 s I2t (A2s) Typ. Voltage Drop (mV) Cold Resistance (m) 100 110 0.70 46,800 125 110 0.52 118,100 142.5395.6152 150 110 0.42 113,400 142.5395.6172 175 110 0.36 154,400 142.5395.6202 200 110 0.34 288,000 142.5395.6222 225 110 0.29 236,000 142.5395.6252 250 110 0.25 292,500 142.5395.6302 300 110 0.21 486,000 Housing Color Dimensions Dimensions in mm 1 0,1 10 100 1000 10000 CURRENT [A] 100A-300A: FL=1,25 (max. operating current: 0,8 x Irat at 23C) 400A-500A: FL=2,00 (max. operating current: 0,5 x Irat at 23C) Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 31 littelfuse.com High Current Fuses CF Fuses Rated 58V Main Fuse for mounting with battery clamp on the battery pole. Voltage rating 58 VDC, Current rating 50A - 300A. With transparent cover material for visual inspection of melting element. Specifications Insulating Body Material: Ceramic Cover Material: PES Visible melting-element Interrupting Rating: 2,000A @58 VDC Complies with: ISO 8820-6, DIN 72581-5, UL 248 Special Purpose Fuses cULus Recognized:File No. E211637 CF Fuses Time-Current Characteristics Ordering Information Part Number Package Size % of Rating Opening Time Min / Max (s) 155.0892.xxx1 100 100 360,000 s / - 135 - / 3,600 s Ratings Pre-Arcing Time-Limits 150 1 s / 600 s 200 0.200 s / 60 s 300 0.050 s / 1.5 s 400 0.020 s / 0.50 s 600 - / 0.20 s Part Number Current Rating (A) Typ. Voltage Drop (mV) Cold Resistance (m) I2 t (A2s) 155.0892.5501 50 100 1.20 1,900 155.0892.5751 75 90 0.60 12,000 155.0892.6101 100 80 0.60 14,000 155.0892.6121 125 75 0.45 51,000 155.0892.6151 150 70 0.35 63,800 155.0892.6171 175 70 0.25 120,000 155.0892.6201 200 65 0.25 172,800 155.0892.6251 250 70 0.20 330,000 155.0892.6301 300 70 0.15 372,000 Insert CF8-Fuse links only in conjunction with the insulating nuts, see Section "Fuse Holders." Corresponding battery clamp see Section "Fuse Holders." Dimensions Dimensions in mm FI = 1.25 (max. operating current: 0.8 x Irat at 23C) Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 32 High Current Fuses Fuse Strips with Housing Rated 36V - SPECIAL PURPOSE FUSES (NOT INTENDED FOR AUTOMOTIVE or TRUCK APPLICATIONS) Housed fuse strips with window for visual inspection of melting element. Current rating 30A 150A, 36 VDC. 90 fork type lugs. Specifications Voltage Rating: Interrupt Ratings: Operating Temperature Range: Insulating Body: Metal Parts: Complies with: 36 VDC up to 375A -40 to 125C Out of ceramic Zinc-alloy DIN 72581/2 Time-Current Characteristics Ordering Information Part Number 156.5611.xxx1 Package Size % of Rating Opening Time Min / Max (s) 50 130 3,600 s / - 250 - / 60 s Ratings Pre-Arcing Time-Limits Part Number Current Rating (A)* Typ. Voltage Drop (mV) Material Thickness "S" (mm) 156.5611.5301 30 70 0.25 156.5611.5401 40 70 0.20 156.5611.5501 50 70 0.25 156.5611.5601 60 70 0.40 156.5611.5701 70 70 0.45 156.5611.5801 80 70 0.50 156.5611.6101 100 70 0.70 156.5611.6111 120 70 0.70 156.5611.6121 125 70 0.70 156.5611.6151 150 70 1.00 Corresponding holder see Section "Fuse Holders." *Metal parts in compliance with DIN 72581/2. Fuses with housings not mentioned in the standards. Dimensions Dimensions in mm S FI = 1.00 (max. operating current : 1.0 x Irat at 23C) Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 33 littelfuse.com High Current Fuses Fuse Strips Rated 48V - SPECIAL PURPOSE FUSES (NOT INTENDED FOR AUTOMOTIVE OR TRUCK APPLICATIONS) Non-housed fuse strips for battery powered fuses rated at 48VDC. 90 and straight fork type lugs. Specifications Voltage Rating: Interrupt Ratings: Operating Temperature Range: - Metal Parts: Complies with: 48 VDC up to 3000A -40 to 125C 35 A - 80 A: Zinc-alloy 100A - 500 A: Copper Cu, gal. Sn DIN 43560-1 Time-Current Characteristics Ordering Information Part Number Dimensions Package Size 157.5700.xxx1 50 157.5916.xxx1 50 % of Rating Dimensions in mm a S a Pre-Arcing Time-Limits FI = 1.00 (max. operating current:1.0 x Irat at 23C) Opening Time Min / Max (s) 35-200 225 - 500 150 3,600 s / - -/- 160 -/- 60 s / - 220 - / 60 s 250 0.8 s / 10 s 400 0.20 / 2 s Ratings Part Number a = 11 mm a = 9 mm* 157.5700.5351 157.5700.5401 157.5700.5501 157.5700.5631 157.5700.5801 157.5700.6101 157.5700.6121 157.5700.6131 157.5700.6141 157.5700.6151 157.5700.6161 157.5700.6171 157.5700.6201 157.5700.6231 157.5700.6251 157.5700.6271 157.5700.6301 157.5700.6331 157.5700.6351 157.5700.6401 157.5700.6421 157.5700.6501 157.5916.5351 - 157.5916.5501 157.5916.5631 157.5916.5801 157.5916.6101 157.5916.6121 157.5916.6131 - - 157.5916.6161 - 157.5916.6201 - 157.5916.6251 - - - - - - - Current Typ. Voltage Drop Rating (A) (mV) 35 40 50 63 80 100 125 130 135 150 160 175 200 225 250 275 300 325 355 400 425 500 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 Breaking Capacity (VDC/A) Material Thickness "S" (mm) 48/210 48/240 48/300 48/378 48/480 48/600 48/750 48/780 48/810 48/900 48/960 48/1050 48/1200 48/1350 48/1500 48/1650 48/1800 48/1950 48/2130 48/2400 48/2550 48/3000 0.6 0.6 0.6 0.6 0.6 0.5 0.8 0.8 0.8 0.8 1.0 1.0 0.8 0.5 0.5 0.8 0.8 0.8 0.8 0.8 1.0 1.0 Corresponding holders = 177.5701.0001 and 177.5702.0001." Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 34 High Current Fuses Fuse Strips with Housing Rated 48V - SPECIAL PURPOSE FUSES (NOT INTENDED FOR AUTOMOTIVE OR TRUCK APPLICATIONS) Housed fuse strips for battery-powered vehicles. Current rating 35A - 500A, 48 VDC. 90 and straight fork type lugs. With window for visual inspection of melting element. Specifications Voltage Rating: Interrupt Ratings: Operating Temperature Range: Metal Parts: Complies with: cULus Recognized: 48 VDC up to 3000A -40 to 125C 35A - 80A: Zinc-alloy 100A - 500A: Copper Cu, gal. Sn UL 248 Special Purpose Fuses File No. E211637 Time-Current Characteristics Ordering Information Part Number Package Size Dimensions 157.5701.xxx1 50 Dimensions in mm 157.5917.xxx1 50 % of Rating a S Ratings a Part Number Glass Cover Pre-Arcing Time-Limits FI = 1.00 (max. operating current: 1.0 x Irat at 23C) a = 11 mm 157.5701.5351 157.5701.5401 157.5701.5501 157.5701.5631 157.5701.5801 157.5701.6101 157.5701.6121 157.5701.6131 157.5701.6141 157.5701.6151 157.5701.6161 157.5701.6171 157.5701.6201 157.5701.6231 157.5701.6251 157.5701.6271 157.5701.6301 157.5701.6331 157.5701.6351 157.5701.6401 157.5701.6421 157.5701.6501 a = 9 mm* 157.5917.5351 - 157.5917.5501 157.5917.5631 157.5917.5801 157.5917.6101 157.5917.6121 - - 157.5917.6151 157.5917.6161 157.5917.6171 157.5917.6201 157.5917.6231 157.5917.6251 157.5917.6281 - 157.5917.6331 157.5917.6351 157.5917.6421 157.5917.6501 Opening Time Min / Max (s) 35-200 225 - 500 150 3,600 s / - -/- 160 -/- 60 s / - 220 - / 60 s 250 0.8 s / 10 s 400 0.20 / 2 s Current Rating (A) Typ. Voltage Drop (mV) Breaking Capacity (VDC/A) Material Thickness "S" (mm) 35 40 50 63 80 100 125 130 135 150 160 175 200 225 250 275 300 325 355 400 425 500 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 125 48/210 48/240 48/300 48/378 48/480 48/600 48/750 48/780 48/810 48/900 48/960 48/1050 48/1200 48/1350 48/1500 48/1650 48/1800 48/1950 48/2130 48/2400 48/2550 48/3000 0.6 0.6 0.6 0.6 0.6 0.5 0.8 0.8 0.8 0.8 1.0 1.0 0.8 0.5 0.5 0.8 0.8 0.8 0.8 0.8 1.0 1.0 Corresponding holder see Section "Fuse Holders." Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 35 littelfuse.com High Current Fuses HSB Fuses Rated 32V Non-housed fuse strips for rated voltage up to 32 VDC. Current rating 30 A -175 A. Ring type lugs. Specifications Voltage Rating: 32 VDC Interrupt Ratings: 1000A Operating Temperature Range: -40 to 125C Material:Zinc-alloy Connections:Zinc-alloy 2 x M6 bolts, distance 30 mm Torque: 4 Nm +/- 1 Nm Ordering Information Part Number Time-Current Characteristics Package Size % of Rating 156.5677.xxx1 100 100 /- 156.5677.xxx2 10000 125 360,000 s / - 300 0.100 s / 10 s Opening Time Min / Max (s) 600 0.020 s / 1 s 1000 0.010 s / 0.300 s Ratings Part Number Pre-Arcing Time-Limits Current Rating Typ. Voltage Drop (A) (mV) Cold Resistance (m) I2t (As) Material Thickness "S" (mm) 156.5677.530_ 30 44 1.33 3800 0.4 156.5677.540_ 40 40 0.89 11200 0.4 156.5677.550_ 50 44 0.72 21300 0.4 156.5677.560_ 60 38 0.58 41400 0.4 156.5677.580_ 80 40 0.43 44800 0.8 156.5677.611_ 110 40 0.31 139000 0.8 156.5677.615_ 150 52 0.23 465000 0.8 156.5677.617_ 175 46 0.22 560000 0.8 Dimensions Dimensions in mm S FI = 1.00 (max. operating current: 1.0 x Irat at 23C) Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 36 High Current Fuses Fuse Strips with Rated 36V - SPECIAL PURPOSE FUSES (NOT INTENDED FOR AUTOMOTIVE OR TRUCK APPLICATIONS) Non-housed fuse strips for Diesel vehicles. Current rating 25A - 150A, 36 VDC. 90 fork type lugs. Specifications Voltage Rating: 36 VDC Interrupt Ratings up to 625A Operating Temperature Range: -40 to 125C Material:Zinc-alloy Complies with: DIN 72581/2 Time-Current Characteristics Ordering Information Package Size % of Rating Opening Time Min / Max (s) 156.5610.xxx1 100 130 3,600 s / - 156.5610.xxx2 2000 250 - / 60 s Part Number Ratings Pre-arcing Time-limits Part Number Current Rating (A) Typ. Voltage Drop (mV) Material Thickness "S" (mm) 156.5610.525_ 25* 70 0.20 156.5610.530_ 30 70 0.25 156.5610.540_ 40* 70 0.20 156.5610.550_ 50 70 0.25 156.5610.560_ 60* 70 0.40 156.5610.570_ 70* 70 0.45 156.5610.580_ 80 70 0.50 156.5610.610_ 100 70 0.70 156.5610.611_ 120* 70 0.70 156.5610.612_ 125* 70 0.70 156.5610.615_ 150* 70 1.00 156.5610.625_ 250* 70 2.00 *Not mentioned in the standards Corresponding holder see Section "Fuse Holders." Dimensions Dimensions in mm S FI = 1.00 (max. operating current: 1.0 x Irat at 23C) Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 37 littelfuse.com Cable/PAL Fuses littelfuse.com BF-Inline Fuses Rated 32V 39 CABLEPRO(R) Cable Protector Fuses Rated 32V 40 PAL Fuses 41 38 Cable Fuses BF-Inline Fuse Rated 32V Inline fuse to protect specific cable cross-sections and insulations; Cross-section 10mm to 35mm. For rated voltage up to 32 VDC. Assembly notes: The wire integrated fuse has to be insulated by using a self-adhesive shrinking tube. The wire has to be fixed on both sides of the fuse to minimize the wire forces. Recommended shrinking tube: DERAY(R)-IAKT 4:1, 24mm Specifications Voltage Rating: Housing Material: Insulating Housing Matierial: Terminals: Interrupting Rating: 32 VDC PETGF30 PAGF30 Crimp, Copper alloy, tinned 2000A @32VDC Ordering Information Part Number Package Size 153.0000 300 Time-Current Characteristics 100A-190A % of Rating 100 150 200 300 500 Opening Time Min / Max (s) 360,000 s 90 s 3s 0.3 s 0.1 s - 1800 s 240 s 60 s 10 s Time-Current Characteristics 300A % of Rating 75 165 200 350 500 Opening Time Min / Max (s) 360,000 s 10 s 1s 0.3 s 0.1 s - 100 s 15 s 5s 1s Ratings Time-Current Characteristics Curve 100000 10000 Part Number Current Rating (A) Wire Size/Type/ Marking 153.1002 153.1012 153.1602 153.1612 153.2502 153.2512 153.3502 100 125 125 170 170 190 300 10mm/FLY/P 10mm/FL2G/S 16mm/FLY/P 16mm/FL2G/S 25mm/FLY/P 25mm/FL2G/S 35mm/FLY/P Typ. Voltage Drop Cold Resistance (mV) (m) 60 70 75 60 70 52 70 0.42 0.32 0.41 0.22 0.29 0.22 0.20 I2t (A2s) 27,000 87,500 29,600 248,000 78,500 248,000 373.000 153.1002(100A) 100000 1000 153.1012 (125A) 153.1602(125A) Time (s) 153.1612(170A) 10000 100 153.2502(170A) 153.2512(190A) 153.1002(100A) 153.3502(300A) 1000 10 153.1012 (125A) 153.1602(125A) Time (s) 153.1612(170A) 100 1 153.2502(170A) 153.2512(190A) 153.3502(300A) 10 0.1 10 100 1000 Current (A) Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for 1 implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse surgical product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 0.1 10 100 1000 Current (A) 39 littelfuse.com Cable Fuses CABLEPRO(R) Cable Protector Fuses Rated 32V Available in AWG and metric cables The CABLEPRO(R) fuse is designed to replace conventional wire fusible links in high current automotive applications. The slim package of the CABLEPRO(R) and the predictable and reliable performance characteristics (similar to MEGA(R) fuse) make this far superior over wire fusible links. Interrupting rating 2000A @ 32 VDC.CablePro is not a sealed product. To seal it a shrink tube should be used. Specifications Voltage Rating: 32V Interrupting rating: 2000A @ 32 VDC Housing Material: PPAGF33HS Operating Temperature Range: -40C to +125C Cable Types Available: SAE J1127 SXT, SAE J1128 TXL, ISO 6722: Type FL2G Operating Temperature Range: -40C to +150C - Optional for 150A, 175A and 200A ratings Cable Type: Thin wall irradiated XLPE (SAE 4GA) Available with UL recognized in 60, 100, 150 & 200 at 32V (UL not available with the thin wall irradiated XLPE SAE 4GA cable) Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 40 PAL Fuses 293 Series 2935 Series 2938 Series Auto Link PAL 293 Series Fuse Amps (A): 20, 30, 40, 50, 60, 70, 80, 100 Auto Link PAL 2935 Series Fuse Amps (A): 25, 30, 45, 65, 75 Auto Link PAL 2938 Series Fuse Amps (A): 20, 30, 40, 50, 60, 70, 80 294 Series 294C Series 295 Series Auto Link PAL 294 Series Fuse Amps (A): 30, 40, 50, 60, 70, 80, 100, 120 Auto Link PAL 294C Series Fuse Amps (A): 20, 30, 40, 50, 60, 70, 80, 100, 120 Auto Link PAL 295 Series Fuse Amps (A): 20, 30, 40, 50, 60, 70, 80, 100, 120, 140 283B Series 283 Series Auto Link PAL 283B Series Fuse Amps (A): 20, 30, 40, 50, 60, 70, 80, 100, 120, 140 Auto Link PAL 283 Series Fuse Amps (A): 20, 30, 40, 50, 60, 70, 80, 100, 120, 140 Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 41 littelfuse.com High Voltage Fuses littelfuse.com LC High Voltage Fuse43 LC High Voltage 50A Fuse 42 45 High Voltage Fuses Low Current HEV Fuse The LC HEV fuse is designed for protection of high-voltage accessory circuits in electric and hybrid electric vehicles. Specifications Low Current HEV Fuses Voltage Rating (10A, 15A, 20A, 30A): Voltage Rating (40A): Note: The 0HEV040.ZXBD is rated at 450 VDC Interrupting Rating (10A, 15A, 20A, 30A): Interrupting Rating (40A): Operating Temperature Range: 450 VDC 425 VDC 10kA @ 450 VDC 10kA @ 425 VDC -40C to +125C Ordering Information 0HEV040.ZXBD Time-Current Characteristics Part Number Termination Package Size 0HEVxxx.ZXC Cartridge 240 0HEVxxx.ZXISO Bolt Down (ISO) 240 0HEVxxx.ZXPY Blade 240 0HEVxxx.ZXBD Bolt Down (Axial) 240 0HEVxxx.ZXPCB PCB Mount 240 0HEVxxx.ZXPCBL PCB Mount (Long) 240 % of Rating Opening Time Min / Max (s) 10A Opening Time Min / Max (s) 15A, 20A, 30A Opening Time Min / Max (s) 40A 100 110 135 150 200 300 500 100 hrs / 4 hrs / 100 / 3600 10 / 1000 0.5 / 100 0.1 / 15 0.05 / 1 100 hrs / 4 hrs / 150 / 3600 10 / 1000 0.5 / 100 0.1 / 15 0.05 / 1 100 hrs / 150 / 3600 10 / 1000 0.5 / 100 0.1 / 15 0.05 / 1 Ratings Part Number 0HEV010.xxx 0HEV015.xxx 0HEV020.xxx 0HEV030.xxx 0HEV040.xxx Current Rating (A) 10 15 20 30 40 Typical Voltage Drop at 70% IR (mV) 114 96 79 67 69 Color Code Maximum Voltage Drop Spec at 100% IR (mV) 300 200 200 200 200 Typical Cold Resistance (m) 12.8 7.9 5.0 2.7 2.0 Minimum Melting It (A2s) 255 133 268 993 1495 (Average Initial Measurements) Temperature Rerating Curve Time-Current Characteristic Curves 20A 30A 40A 1000 15A 10A LC HEV FUSE 100 TIME IN SECO ONDS 10 1 0.1 0.01 1 10 100 1000 CURRENT IN AMPERES Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 43 littelfuse.com High Voltage Fuses Low Current HEV Fuse Dimensions Dimensions in mm ZXC Cartridge ZXBD Bolt Down (Axial) ZXISO Bolt Down (ISO) ZXPCB PCB Mount ZXPY Blade ZXPCBL PCB Mount (Long) Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 44 High Voltage Fuses Low Current High Voltage 50A Fuse The LC HEV fuse is designed for protection of high-voltage accessory circuits in electric and hybrid electric vehicles. Specifications Voltage Rating (50A): Interrupting Rating (50A): Operating Temperature Range: 275 VAC 10,000A @ 275 VAC -40C to +125C Ordering Information Low Current High Voltage 50A Fuses Time-Current Characteristics Package Size % of Rating Opening Time Min / Max (s) Part Number Termination 0HEVxxx.ZXISO2 Bolt Down (ISO) 240 100 100 hrs / - 0HEVxxx.ZXP2Y Blade 240 110 4 hrs / - 0HEVxxx.ZXPCB2 PCB Mount 240 135 - 0HEVxxx.ZXPCBL2 PCB Mount (Long) 240 150 - 0HEVxxx.ZXBD2 Bolt Down (Axial) 240 200 0.5 / 100 300 0.1 / 15 500 0.05 / 1 Ratings Part Number Current Rating (A) Voltage Rating (VAC) 0HEV050.XXX 50 275 Color Code Typical Voltage Drop at 70% IR (mV) 57 Maximum Voltage Typical Cold Drop Spec at 100% IR Resistance (m) (mV) 200 1.2 Minimum Melting It (A2s) 1495 Temperature Rerating Curve Time-Current Characteristic Curves 50A 275 VAC LC HEV FUSE 1000 100 TIME IN SECONDS 10 1 0.1 0.01 1 10 40 50 100 CURRENT IN AMPERES Littelfuse, Inc. 1000 May 2012 Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 45 littelfuse.com High Voltage Fuses Low Current High Voltage 50A Fuse Dimensions Dimensions in mm ZXISO2 Bolt Down (ISO) ZXPCB2 PCB Mount ZXP2Y Blade ZXPCBL PCB Mount (Long) ZXBD2 Bolt Down (Axial) Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 46 Specialty Products Shunts 48 Fuseholders49 47 littelfuse.com Specialty Products SHUNTS ATO(R) Shunt MINI(R) Shunt MICRO2 (R) Shunt Operating Temp.: -40C to +125C Maximum Continuous Load Rating: 35A* Housing Material: Thermoplastic (UL 94V0 Rated) Terminal Material: Brass Tin Plated Operating Temp.: -40C to +125C Maximum Continuous Load Rating: 20A* Housing Material: Thermoplastic (UL 94V0 Rated) Terminal Material: Zinc Silver Plated Operating Temp.: -40C to +125C Maximum Continuous Load Rating: 20A* Housing Material: PA66 Terminal Material: Ag plated zinc alloy MICRO3 (R) Shunt JCASE (R) Shunt MCASE+ (R) Shunt Operating Temp.: -40C to +125C Maximum Continuous Load Rating: 15A* Housing Material: PA66 Terminal Material: Ag plated zinc alloy Operating Temp.: -40C to +125C Maximum Continuous Load Rating: 50A* Housing Material: PA66 Terminal Material: Copper Operating Temp.: -40C to +125C Maximum Continuous Load Rating Unslotted: 30A* Maximum Continuous Load Rating Slotted: 50A* Housing Material: PPA (33% / 35% GF) Terminal Material: Copper Part Number Type Max Continuous Load Rating* (A) Housing Material Terminal Material Part Quantity 02400094P ATO 35 Thermoplastic (UL 94V0) Brass Tin Plated 2000 0297900.WXNV MINI 20 Thermoplastic (UL 94V0) Zinc Silver Plated 3000 0327900.YX2S MICRO2 20 PA66 Zinc Silver Plated 4000 0337900.PX2S MICRO3 15 PA66 Zinc Silver Plated 2000 0495900_ JCASE 50 PA66 Copper Z=2200 pcs/X=1 pc 0695900.PXP MCASE+ Unslotted 30 PPA (33%/35% GF) Copper 2000 0695900.PXPS MCASE+ Slotted 50 PPA (33%/35% GF) Copper 2000 *Rating varies based on mating terminal performance Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 48 Fuseology I. Introduction The purpose of this Fuseology section is to promote a better understanding of fuses and some of the more common application details. The fuses to be considered are currentsensitive devices which are designed as the intentional weak link in the electrical circuit. The function of a fuse is to provide discrete component or complete circuit protection by reliably melting under overcurrent conditions and thus safely interrupting the flow of current. II. Types of Overcurrents An overcurrent is any current which exceeds the ampere rating of wiring, equipment or devices under conditions of use. The term "overcurrent" includes both overloads and short circuits. A.Overloads An overload is an overcurrent which is confined to normal current paths. An overload occurs when the current exceeds the value for which the wires or equipment are rated. This can happen when too many devices are connected to the circuit, or when a device connected to the circuit malfunctions in a way that causes it to draw higher than normal current, usually in the range of one to six times normal current. Sustained overloads eventually overheat circuit components. Therefore, fuses must open circuits experiencing sustained overloads before damage occurs. B.Short Circuits A short circuit is current out of its normal path. It occurs when accident or malfunction creates an unintended path for the electricity to flow from the battery or alternator to ground. This shorter, more direct path to ground bypasses the resistance normally offered by the wiring and devices connected to the circuit. With virtually no resistance left to impede current flow, the voltage forces higher and higher current to flow through the wires to the point of the short. Under such a condition, the current will quickly build to such a high level that the heat generated can cause insulation to burn and equipment to be damaged unless the circuit is opened through the use of a fuse. B.Interrupting Rating The interrupting rating (also known as breaking capacity or short circuit rating) is the maximum current, as stated by the manufacturer, which the fuse can safely interrupt at rated voltage. During a fault or short circuit condition, a fuse may receive an instantaneous current many times greater than its normal operating current. Safe operation requires that the fuse remain intact (no body rupture) and clear the circuit. The interrupting rating is 1000A @ 32 volts DC for the MINI(R), MAXI (R), ATO (R), JCASE(R), and MIDI(R) Fuses, and 2000A @ 32 volts DC for the MEGA(R) and CABLEPRO (R) Fuses. C.Time-Current Characteristics A fuse's time-current characteristics determine how fast it responds to different overcurrents. All fuses have inverse time-current characteristics, so opening time decreases as overcurrents increase. Time-current characteristics are presented graphically on standardized "log-log" paper. Figure 1 is a sample time-current curve for the MAXI Fuse series for fuses rated 20-60A. Current values increase from left to right, and time increases from bottom to top. The average melting time for any current can be determined from the curve. For example, from Figure 1 it can be determined that a 20A MAXI Fuse experiencing an overload of 100A will open in about 0.5 seconds. At 40A, the same 20A MAXI Fuse would open in about 9 seconds. Time-current curves are also used to compare fuses of the same series but of different current ratings. Suppose it was desired to compare the opening times of 20A and 60A MAXI Fuses at an overload of 100A. From the curve in Figure 1, one can see that the 20A fuse opens in about 0.5 seconds at 100 amps, whereas the 60A fuse does not open until about 50 seconds. Figure 1: Average MeltingCurrent Curve for the MAXI Fuse Series (20-60A) III.Fuse Selection Parameters Since overcurrent protection is crucial to reliable electrical system operation and safety, fuse selection and application should be carefully considered. When selecting fuses, the following parameters should be evaluated: A.Voltage Rating The voltage rating, as marked on a fuse, indicates the maximum voltage of the circuit for which the fuse is designed to operate safely in the event of an overcurrent. Therefore, the fuse's voltage rating must equal or exceed the available circuit voltage where the fuse will be installed. System voltage exceeding the fuse's rated voltage may result in fuse damage. The voltage rating is 32 volts DC for the MINI(R), MAXI (R), ATO (R), MIDI(R), MEGA(R), and CABLEPRO (R) Fuses. Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 49 littelfuse.com Fuseology It is important to note that time-current curves give only average melting times and are presented as a design aid but are not considered as part of the fuse specifications. The term used in fuse design that describes how rapidly a fuse responds to various overcurrents is the fuse's "characteristics." Automotive fuse characteristics are determined by the fuse's degree of time delay. Initial or start-up pulses are normal for many automotive applications and require fuses to have a time delay designed in to enable them to survive these pulses and still provide protection against prolonged overloads. Fuses such as the MINI(R) Fuse and ATO(R) Fuse have a moderate degree of time delay, whereas fuses like the MAXI(R) Fuse and MEGA(R) Fuse have a high degree of time delay which enables them to handle high inrush currents like those caused by motor start-ups. Figure 2 compares sample time-current curves of a 30A MINI Fuse to a 30A MAXI Fuse. To see that the MAXI Fuse has more time delay than the MINI Fuse, compare their opening times at an overload of 100A. Despite the fact that the fuses are the same rating, the MINI Fuse opens in about 0.1 seconds while the MAXI Fuse opens in about 2.2 seconds. usually recommended for operation at more than 7.5A in a 25C ambient. 2. Rerating for Ambient Temperature The current carrying capacity tests of fuses are performed at 25C & will be affected by changes in ambient temperature. At higher ambient temperatures, a fuse will respond faster to a given overload. Conversely, at lower ambient temperatures, a fuse will respond slower to a given overload. In addition, the temperature of the fuse increases as the normal operating current approaches or exceeds the rating of the fuse. A MINI Fuse operating at 25C and 110% of rated current has a minimum life of 100 hours. However, if that same fuse were operated at a very high ambient temperature, rerating would be necessary. Figure 3 is a sample temperature rerating curve for the MINI Fuse. The following example shows how to use such a curve. uppose there is a normal operating current of 15 S amperes in a particular circuit, and the ambient temperature will be 105C instead of 25C. Which MINI Fuse rating should be used? From Figure 3, the percent of rated current to be used at an ambient temperature of 105C is 88%, so: When selecting a fuse, the start-up pulse should be defined and then compared to the time-current curve for the fuse. 1000 Ideal fuse rating = Normal operating current Temp rerating factor x 0.75 100 TIME IN SECONDS = 15A 0.88 x 0.75 10 = 22.73A Therefore, a 25A or larger MINI Fuse should be used. 30A MAXITM FUSE 30A MINITM FUSE 1 E.Transient Overcurrent Considerations 0.1 0.01 1 10 100 1000 CURRENT IN AMPERES 10000 Figure 2: Average Melting-Current Curve Comparing 30A MINI Fuse to 30A MAXI Fuse D. Current Rating The current rating is the maximum current which the fuse can continuously carry under specified conditions. 1. Normal Operating Current The current rating of a fuse is typically derated 25% for operation at 25C to avoid nuisance blowing. For example, a fuse with a current rating of 10A is not Figure 3: MINI Auto Fuse 297 Series Temperature Rerating Curve Transient pulses of inrush current are commonplace in vehicle electrical systems. The transient overcurrent pulses affect the life of automotive fuses. Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 50 Fuseology Melting I2t: the thermal energy required to melt a specific fuse element. Arcing I2t: the thermal energy passed by a fuse during the arcing time. The magnitude of arcing I2t is a function of the available voltage and stored energy in the circuit. Figure 4 shows how I2t of the pulse can be calculated from the graph of the pulse current as a function of time. igure 5 is a graph of the pulse cycle withstand capability of F blade fuses. Because electrical pulse conditions can vary considerably from one application to another, application testing is recommended to establish the ability of the fuse design to withstand the pulse condition. Total Clearing I2t: the thermal energy through the fuse from overcurrent inception until current is completely interrupted. Total clearing I2t = (melting I2t) + (arcing I2t). 1000000 I2t has two important applications to fuse selection. The first is pulse cycle withstand capability and the second is selective coordination. 100000 2. Pulse Cycle Withstand Capability Electrical pulses produce thermal cycling and possible mechanical fatigue that could affect the life of the fuse. NUMBER OF PULSES 10000 For this reason, it is important to know the pulse cycle withstand capability of the fuse, which is defined as the number of pulses of a given I2t value that can be withstood by the fuse without opening, assuming that there is sufficient cool down time between pulses. 1000 100 33 1. I2t I2t is an expression of the available thermal energy resulting from current flow. With regard to fuses, the term is usually expressed as melting, arcing, and total clearing I2t. The units for I2t are expressed in ampere-squared-seconds [A2s]. 3 sigma confidence limit Actual # of pulses 10 1 0.1 1 RELATIVE I2t Figure 5: Pulse Cycle Withstand Capability for Blade Fuses 3. Selective Coordination In a selectively coordinated system, only the fuse immediately on the line side of an overcurrent opens. Upstream fuses remain closed and undamaged. All other equipment remains in service, which simplifies locating overloaded equipment or short circuits. In Figure 6, if a short circuit arises behind fuse #1, fuse #1 should open and fuse #2 should stay closed and undamaged. The condition necessary to assure this result is that the minimum melting I2t of the supply side fuse (fuse #2) must be greater than the total clearing I2t of the load side fuse (fuse #1). This condition results in the load side fuse opening before the supply side fuse begins to melt. Minimum melting and total clearing I2t data are given in this catalog. i = + kt I2t = (1/5)ic2t Natural decay to non-zero value FUSE #2 SUPPLY SIDE ib FUSE #1 I2t= ib2t - 2ib(ic-ib)(e-t/-1)-/2(ic-ib)2(e-2t/-1) Figure 4: Evaluating the It of a Variety of Current Wave Shapes LOAD SIDE Figure 6: Selective Coordination for Fuses in Series Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 51 littelfuse.com Fuseology IV. Voltage Drop Across Terminals A fuse is only as good as the system in which it is used. One aspect of the electrical system that has considerable effects on the performance of the fuse is the quality of the connection between the fuse and the cable it protects. High voltage drop across the fuse/terminal interface creates additional thermal loading, which in turn causes shifts in the time-current characteristics of the fuse. Table 1 below gives the maximum recommended voltage drop per terminal for automotive fuses. Figure 7 indicates the measurement locations used to determine the voltage drop across the terminal. The voltage drop across the left terminal would be V2-4 and the voltage drop across the right terminal would be V1-3. Type Maximum Recommended Voltage Drop Per Terminal [MV] (between points 1-3 or 2-4) ATO(R) FUSE 30 MINI(R) FUSE MAXI(R) FUSE 30 30 (R) 15 MEGA FUSE Table 1: Maximum Recommended Voltage Drop per Terminal V. Diffusion Diffusion Pill Technology is a mixing of molecules, atoms or crystals in the solid, liquid or gaseous state. Diffusion Pill Technology is often used in the design of fuses for automotive, electronic and industrial fuse applications. "M-effect" is the method of diffusing one metal into another to form a new alloy with a lower melting point. Littelfuse uses the "M-effect" to produce three very desirable characteristics in fuse designs: lower melting temperature, time delay, and lower voltage drop. By affixing a diffusion pill tin to the element, the melting temperature is decreased. This decrease in melting temperature reduces the fuse rating. In order to reestablish its original rating the fuse elements' cross section needs to increase. An increase in cross section increases the blow time at higher overload condition. A higher degree of time delay enables a fuse to withstand higher current inrush pulses. This increase in cross section reduces the overall fuse resistance and voltage drop. VI.Match Wire Gauge to Fuse In order to protect wiring under all overload and short circuit conditions, it is necessary to standardize the fuse and wire selection process. Fuses have controlled opening characteristics, and each wire gauge has its respective current carrying capacity. Fuses need to be selected to always protect the wire insulation from damage. In the selection of wire gauge at various ambient temperatures, it is important to consider the worst case or highest ambient temperature for the application. Wires derate to a much higher degree than fuses, because wire insulation temperature capability is affected much more severely. 1 2 Maximum Recommended Continuous Current Max Continuous Current (A) Wire Size mm Gage No. 0.3 0.5 4 0.75 0.8 1 1.5 2 2.5 3 4 5 6 8 10 13 19 3 Figure 7: Measurement Locations along the Fuse/Terminal/Cable System Used to Determaine the Voltage Drop across the Terminal 20 18 16 14 12 10 8 6 4 At 25C GXL (1) GPT (2) At 80C GXL (1) GPT (2) At 105C GXL (1) 15 10 11 4 9 21 15 16 6 13 27 31 33 43 50 60 68 80 90 103 125 146 170 221 21 22 23 30 36 42 47 56 65 73 87 103 120 156 20 23 25 33 37 45 51 61 68 78 96 111 129 166 7 7 9 12 14 15 18 22 23 28 30 40 47 61 17 19 20 27 32 38 42 50 58 64 79 90 105 137 (1) = General purpose cross link polyethylene insulation wire with a maximum insulation temperature of 155C. (2) = General purpose thermoplastic insulation wire with a maximum insulation temperature of 90C. Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. littelfuse.com 52 To assist you with your design and selection processes, Littlefuse also offers: Comprehensive Online Product Specs on Littelfuse.com-- Featuring easy-to-use navigation, search and selection tools, as well as additional product details. You can rely on Littelfuse.com for instant answers and continuously up-to-date information. Printed Product Catalogs--For offline and off-the-shelf convenience, our printed product catalogs include data sheets, selection tables and tutorials covering all of our core technologies. Contact your Littelfuse product representative or visit www.littelfuse.com/about-us/product-catalogs to check availability. Circuit Protection Design Guides--Our application-design center website, www.littelfuse.com/technical-resources/application-designs offers a wealth of circuit protection guidance to help you select and apply the best circuit protection solution for your application. As the world's #1 brand in circuit protection Littelfuse offers the broadest and deepest portfolio of circuit protection products and a global network of technical support, backed by more than 85 years of application design expertise. For all of your circuit protection needs visit our Technical Resources center at www.littelfuse.com/technical-resources Application Notes Application Testing SPICE Models Local Technical Support Reference Designs Product Samples Technical Articles Certification Documents Data Sheets Littelfuse is the world leader in circuit protection. We offer an extensive selection of circuit protection technologies for Automotive applications. Littelfuse circuit protection expert staff can assist you in designing circuit protection for your most demanding applications. Solutions for over-current applications as well as over-voltage applications are available from Littelfuse. Low Current Distribution (LCD) MICRO2, MICRO3, LP MINI, MINI, ATOF, MAXI, MCASE, LP JCASE, JCASE High Current Distribution (HCD) ZCASE MASTERFUSE, MASTERFUSE, ZCASE MEGA, MIDI, BF1, MEGA, CF High Voltage Fuses (HEV) OHEV Battery Cable Protection (BCP) CABLE PRO and BF-Inline products for mounting directly inline as part of a high-power cable assembly or more information, please contact your authorized Littelfuse product representative F or visit our website at www.littelfuse.com (c) 2016 Littelfuse, Inc. Specifications descriptions and illustrative material in this literature are as accurate as known at the time of publication, but are subject to changes without notice. Visit www.littelfuse.com for most up-to-date technical information. FORM NO. AA101