POWR-GARD(R) Fuses--Medium Voltage MEDIUM VOLTAGE FUSES 2,400-38,000 VAC * Current-Limiting Current-limiting E- and R-rated fuses are equipped with a mechanical indicator or striker pin that protrudes through the fuse cap upon operation of the fuse. This provides visual identification of a blown fuse and can be used as a trigger for external devices. Note: Extension distance 1/2" minimum; extension force 2 lb. minimum. General Information The terms "Medium Voltage" and "High Voltage" have been used interchangeably by many people to describe fuses operating above 600 volts. Technically speaking, medium voltage fuses are those intended for the voltage range from 2,400 to 38,000 VAC. High voltage fuses are for circuits carrying voltages greater than 38,000 VAC. Description Littelfuse (R) offers a selection of E- and R-rated medium voltage fuses for the protection of transformers, potential transformers, feeders, and motor circuits. Single, double, and triple barrel designs are available to cover a wide range of current, voltage, and interrupting ratings. Conventional ferrule type, clip lock, and bolt-in mounting configurations are available for virtually any application. Hermetically sealed fuses for use in hazardous environments are also offered. Contact the factory or your local Littelfuse representative for additional fuse ratings or custom mounting configurations. 24-Hour Emergency Service is available. Call 800-227-0029, Option 6. E-rated fuses are considered to be general purpose fuses and can be used to protect against low and high values of fault current. R-rated fuses are designed for back-up protection. They must be used in series with other devices such as motor overload relays in order to achieve both overload and shortcircuit protection. Medium voltage fuses are not intended to provide overload protection in the same sense as fuses rated 600 volts or less. Medium voltage fuse current ratings do not have the same meanings as the ampere ratings of low voltage fuses. All medium voltage fuses are limited in their ability to interrupt low value overcurrents, especially those between 100% and 200% of the fuse's continuous current rating. They are designed to carry their rated current without exceeding the temperature rise permitted by NEMA and ANSI standards. Applications * Power Transformer Protection * Potential Transformer Protection * Motor Controller Back-up Protection * Fused Switches * Feeder Circuits Bolt-in Mount Fuses www.littelfuse.com 1 (c) JUNE 2011 Littelfuse POWR-GARD Products POWR-GARD(R) Fuses--Medium Voltage R-Rated medium voltage fuses Current-Limiting Description Characteristics R-rated fuses provide required short-circuit protection for medium voltage motors, motor controllers and associated circuitry. These components have limited ability to absorb the energy of large short-circuit currents. Medium voltage motor controllers contain overload relays which provide both overload protection and locked rotor protection to the motor. The controllers are also intended to interrupt low value short-circuits within the capability of the motor controller. This protects the medium voltage fuse from sustained overcurrents which are less than their minimum interrupting rating. Voltage Ratings: Current Range: 2,750 V - 8,250 V 2R - 36R Options * Hermetically sealed for use in hazardous locations (add "S" suffix to part number) * Bolt-in mounting configurations NEMA Standards for R-rated medium voltage power fuses require they operate within 15-35 seconds when subjected to an rms current 100 times the R rating. For example, a fuse with a 2R rating will open within 15 to 35 seconds on an applied current of 2 x 100 = 200 amperes. Part Number System Hookeye Feature* For hookeye attachment; add "W" suffix to part number 130-4R-1C-5.5 *See web for Bolt Mount, Inverted Bolt Mount, and Bolt-W dimensions Max Voltage (KV) Style: C (Cartridge) B (Bolt Mount) IB (Inverted Bolt Mount) BI (Bolt-In Mount) Medium Voltage Fuse Protection No. of Barrels Rating (size) Continuous Current POWR-GARD (R) medium voltage fuses provide short-circuit protection for motors and transformers rated 2,400 to 38,000 volts AC. Visit www.littelfuse.com/technicalcenter for additional protection tables, sizing recommendations, and applications. Dimensions 6.38" 3"DIA Dim.A Clip Center 9.75" Dim.B Figure D 1 Figure DD 2 Cartridge "C" Figure DDD 3 A Bolt Mount "B" Inverted-Bolt "IB" Bolt-In Mount "BI" Sample Part #: 130-4R-1B-5.5 Sample Part #: 130-4R-1IB-5.5 Sample Part #: 130-4R-1BI-5.5 www.littelfuse.com 2 (c) JUNE 2011 Littelfuse POWR-GARD Products POWR-GARD(R) Fuses--Medium Voltage R-Rated Medium Voltage Fuses Current-Limiting R 2.75 KV Rated R 5.5 KV Rated R 5.5 KV 14"Clip Centers Rated R 8.25 KV Rated system/ Catalog Number Size Maximum Continuous Current @ 40 Degrees C Dim. A (inches) Dim. B (inches) Minimum Interrupting Rating RMS Amps Maximum Interrupting Rating RMS (Asym) Figure Number 702R1C2.75 2R 70 7" 10.875" 170 80,000 1 1003R1C2.75 3R 100 7" 10.875" 250 80,000 1 1304R1C2.75 4R 130 7" 10.875" 340 80,000 1 1505R1C2.75 5R 150 7" 10.875" 390 80,000 1 1706R1C2.75 6R 170 7" 10.875" 500 80,000 1 2009R1C2.75 9R 200 7" 10.875" 760 80,000 1 23012R1C2.75 12R 230 7" 10.875" 1000 80,000 1 39018R2C2.75 18R 390 7" 10.875" 1500 80,000 2 45024R2C2.75 24R 450 7" 10.875" 2 system/ Catalog Number Size 702R1C5.5 1003R1C5.5 1304R1C5.5 1505R1C5.5 1706R1C5.5 2009R1C5.5 23012R1C5.5 39018R2C5.5 45024R2C5.5 48026R2C5.5 55030R2C5.5 60032R2C5.5 65036R2C5.5 55030R3C5.5 60032R3C5.5 65036R3C5.5 2R 3R 4R 5R 6R 9R 12R 18R 24R 26R 30R 32R 36R 30R 32R 36R system/ Catalog Number Size 702R1C5.5X 1003R1C5.5X 1304R1C5.5X 1505R1C5.5X 1706R1C5.5X 2009R1C5.5X 23012R1C5.5X 39018R2C5.5X 45024R2C5.5X 55030R2C5.5X 2R 3R 4R 5R 6R 9R 12R 18R 24R 30R system/ Catalog Number Size 702R1C8.25 1003R1C8.25 1304R1C8.25 1505R1C8.25 1706R1C8.25 2009R1C8.25 23012R1C8.25 39018R2C8.25 45024R2C8.25 2R 3R 4R 5R 6R 9R 12R 18R 24R Maximum Continuous Current @ 40 Degrees C 70 100 130 150 170 200 230 390 450 480 550 600 650 550 600 650 Maximum Continuous Current @ 40 Degrees C 70 100 130 150 170 200 230 390 450 550 Maximum Continuous Current @ 40 Degrees C 70 100 130 150 170 200 230 390 450 Dim. A (inches) Dim. B (inches) 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" Dim. A (inches) Dim. B (inches) 14" 14" 14" 14" 14" 14" 14" 14" 14" 14" 17.875" 17.875" 17.875" 17.875" 17.875" 17.875" 17.875" 17.875" 17.875" 17.875" Dim. A (inches) Dim. B (inches) 12" 12" 12" 12" 12" 12" 12" 12" 12" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 1950 80,000 Minimum Interrupting Rating RMS Amps 170 250 340 390 500 760 1000 1500 1950 2100 2400 2600 2900 2400 2600 2900 Maximum Interrupting Rating RMS (Asym) 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 Minimum Interrupting Rating RMS Amps 170 250 340 390 500 760 1000 1500 1950 2400 Maximum Interrupting Rating RMS (Asym) 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 Minimum Interrupting Rating RMS Amps 190 225 330 440 500 740 955 1440 1910 Maximum Interrupting Rating RMS (Asym) 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 Figure Number 1 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 Figure Number 1 1 1 1 1 1 1 2 2 2 Figure Number 1 1 1 1 1 1 1 2 2 For hookeye attachment; add "W" suffix to part number www.littelfuse.com 3 (c) JUNE 2011 Littelfuse POWR-GARD Products POWR-GARD(R) Fuses--Medium Voltage E-Rated Medium Voltage Fuses Current-Limiting Description Characteristics E-rated fuses have time current characteristics designed to provide current-limiting protection for power transformers, potential transformers, power centers, feeder centers, and unit sub stations. When properly applied, they can protect against high and low fault currents. Voltage Ratings: Current Range: NEMA Standards for E-rated medium voltage fuses require that fuses rated 100E or less open within 300 seconds (5 minutes) when subjected to an RMS value of 200-240% of the fuse continuous current rating; and fuses with an E rating larger than 100E must open within 600 seconds (10 minutes) when subjected to an RMS current of 220-240% of the fuse's continuous current rating. These values establish one point on the time-current curve. 2,750 V - 38,000 V 10E - 600E Options * Hermetically sealed for use in hazardous locations (add "S" suffix to part number) * Clip-lock (CL) and bolt-in styles available. Dimensions 6.38" 3"DIA 9.75" Application Note Since these fuses are used for the protection of general purpose circuits which may contain transformers, motors, and other equipment producing in-rush and/or overload currents, fuses should generally be rated at 140% of the normal full load current, and circuits should be analyzed to ensure that system load currents will not exceed the current rating of the fuse. E 2.75 Max. KV Rated Dim.A Clip Center Dim.B Figure D4 Figure DD 5 A Figure DDD 6 system/Catalog Number Size Dim. A (inches) Dim. B (inches) Max Interrupting Rating RMS (Asym) Figure Number 10E1C2.75 15E1C2.75 20E1C2.75 25E1C2.75 30E1C2.75 40E1C2.75 50E1C2.75 65E1C2.75 80E1C2.75 100E-1C2.75 125E1C2.75 150E1C2.75 200E1C2.75 125E2C2.75 150E2C2.75 200E2C2.75 225E2C2.75 250E2C2.75 300E2C2.75 350E2C2.75 400E2C2.75 450E2C2.75 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125E 150E 200E 125E 150E 200E 225E 250E 300E 350E 400E 450E 7" 7" 7" 7" 7" 7" 7" 7" 7" 7" 7" 7" 7" 7" 7" 7" 7" 7" 7" 7" 7" 7" 10.875" 10.875" 10.875" 10.875" 10.875" 10.875" 10.875" 10.875" 10.875" 10.875" 10.875" 10.875" 10.875" 10.875" 10.875" 10.875" 10.875" 10.875" 10.875" 10.875" 10.875" 10.875" 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 4 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 www.littelfuse.com 4 (c) JUNE 2011 Littelfuse POWR-GARD Products POWR-GARD(R) Fuses--Medium Voltage E-Rated Medium Voltage Fuses E system/Catalog Number Size 5.5 Max. KV 10E1C5.5 15E1C5.5 20E1C5.5 25E1C5.5 30E1C5.5 40E1C5.5 50E1C5.5 65E1C5.5 80E1C5.5 100E1C5.5 125E1C5.5 150E1C5.5 175E1C5.5 200E1C5.5 125E2C5.5 150E2C5.5 175E2C5.5 200E2C5.5 250E2C5.5 300E2C5.5 350E2C5.5 400E2C5.5 450E2C5.5 500E3C5.5 550E3C5.5 600E3C5.5 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125E 150E 175E 200E 125E 150E 175E 200E 250E 300E 350E 400E 450E 500E 550E 600E E system/Catalog Number Size 5.5 Max. KV Current-Limiting 5NLE10E 5NLE15E 5NLE20E 5NLE25E 5NLE30E 5NLE40E 5NLE50E 5NLE65E 5NLE80E 5NLE100E 5NLE125E 5NLE150E 5NLE175E 5NLE200E 5NLE2225E 5NLE2250E 5NLE2300E 5NLE2350E 5NLE2400E 5NLE2450E 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125E 150E 175E 200E 225E 250E 300E 350E 400E 450E Rated Rated www.littelfuse.com Dim. A (inches) Dim. B (inches) 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" 15.875" Dim. A (inches) Dim. B (inches) 14" 14" 14" 14" 14" 14" 14" 14" 14" 14" 14" 14" 14" 14" 14" 14" 14" 14" 14" 14" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 5 Max Interrupting Rating RMS (Asym) Figure number 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 4 4 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 6 6 6 Max Interrupting Rating RMS (Asym) Figure number 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 4 4 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 (c) JUNE 2011 Littelfuse POWR-GARD Products POWR-GARD(R) Fuses--Medium Voltage E-Rated Medium Voltage Fuses E system/Catalog Number Size Dim. A (inches) Dim. B (inches) Max Interrupting Rating RMS (Asym) Figure number 8.25 Max. KV 10E1C8.25 15E1C8.25 20E1C8.25 25E1C8.25 30E1C8.25 40E1C8.25 50E1C8.25 65E1C8.25 80E1C8.25 100E1C8.25 125E1C8.25 150E1C8.25 125E2C8.25 150E2C8.25 200E2C8.25 250E2C8.25 300E2C8.25 350E3C8.25 400E3C8.25 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125E 150E 125E 150E 200E 250E 300E 350E 400E 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 12" 15 " 15 78" 15 78" 15 78" 15 78" 15 78" 15 78" 15 78" 15 78" 15 78" 15 78" 15 78" 15 78" 15 78" 15 78" 15 78" 15 78" 15 78" 15 78" 80,000, 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 6 6 E system/Catalog Number Size Dim. A (inches) Dim. B (inches) Max Interrupting Rating RMS (Asym) Figure number 8.25 Max. KV 8NLE10E 8NLE15E 8NLE20E 8NLE25E 8NLE30E 8NLE40E 8NLE50E 8NLE65E 8NLE80E 8NLE100E 8NLE2100E 8NLE2125E 8NLE2150E 8NLE2200E 8NLE2250E 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 100E 125E 150E 200E 250E 14" 14" 14" 14" 14" 14" 14" 14" 14" 14" 14" 14" 14" 14" 14" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 17 78" 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 E system/Catalog Number Size Dim. A (inches) Dim. B (inches) Max Interrupting Rating RMS (Asym) Figure number 15.5 Max. KV Current-Limiting 10E1C15.5 15E1C15.5 20E1C15.5 25E1C15.5 30E1C15.5 40E1C15.5 50E1C15.5 65E1C15.5 80E1C15.5 100E1C15.5 65E2C15.5 80E2C15.5 100E2C15.5 125E2C15.5 150E2C15.5 175E2C15.5 200E2C15.5 200E3C15.5 250E3C15.5 300E3C15.5 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 65E 80E 100E 125E 150E 175E 200E 200E 250E 300E 15" 15" 15" 15" 15" 15" 15" 15" 15" 15" 15" 15" 15" 15" 15" 15" 15" 15" 15" 15" 18.875" 18.875" 18.875" 18.875" 18.875" 18.875" 18.875" 18.875" 18.875" 18.875" 18.875" 18.875" 18.875" 18.875" 18.875" 18.875" 18.875" 18.875" 18.875" 18.875" 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 6 6 6 Rated Rated Rated www.littelfuse.com 78 6 (c) JUNE 2011 Littelfuse POWR-GARD Products POWR-GARD(R) Fuses--Medium Voltage E-Rated Medium Voltage Fuses E system/Catalog Number Size Dim. A (inches) Dim. B (inches) Max Interrupting Rating RMS (Asym) Figure Number 15.5 Max. KV 15GSE65E 15GSE80E 15GSE100E 15GSE2125E 15GSE2150E 15GSE2175E 15GSE2200E 65E 80E 100E 125E 150E 175E 200E 18" 18" 18" 18" 18" 18" 18" 21 7 8" 21 7 8" 21 7 8" 21 7 8" 21 7 8" 21 7 8" 21 7 8" 60,000 60,000 60,000 60,000 60,000 60,000 60,000 4 4 4 5 5 5 5 E system/Catalog Number Size Dim. A (inches) Dim. B (inches) Max Interrupting Rating RMS (Asym) Figure Number 15.5 Max. KV 15NLE10E 15NLE15E 15NLE20E 15NLE25E 15NLE30E 15NLE40E 15NLE50E 15NLE65E 15NLE80E 15NLE100E 15NLE280E 15NLE2100E 15NLE2125E 15NLE2150E 15NLE2175E 15NLE2200E 15NLE3150E 15NLE3175E 15NLE3250E 15NLE3300E 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 80E 100E 125E 150E 175E 200E 150E 175E 250E 300E 20" 20" 20" 20" 20" 20" 20" 20" 20" 20" 20" 20" 20" 20" 20" 20" 20" 20" 20" 20" 23 78" 23 78" 23 78" 23 78" 23 78" 23 78" 23 78" 23 78" 23 78" 23 78" 23 78" 23 78" 23 78" 23 78" 23 78" 23 78" 23 78" 23 78" 23 78" 23 78" 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 6 6 6 6 E system/Catalog Number Size Dim. A (inches) Dim. B (inches) Max Interrupting Rating RMS (Asym) Figure Number 25.8 Max. KV 15E1C25.8 20E1C25.8 25E1C25.8 30E1C25.8 40E1C25.8 50E1C25.8 65E2C25.8 80E2C25.8 100E2C25.8 15E 20E 25E 30E 40E 50E 65E 80E 100E 21" 21" 21" 21" 21" 21" 21" 21" 21" 24 5 8" 24 5 8" 24 5 8" 24 5 8" 24 5 8" 24 5 8" 24 5 8" 24 5 8" 24 5 8" 40,000 40,000 40,000 40,000 40,000 40,000 40,000 40,000 40,000 4 4 4 4 4 4 5 5 5 E system/Catalog Number Size Dim. A (inches) Dim. B (inches) Max Interrupting Rating RMS (Asym) Figure Number 38 Max. KV Current-Limiting 3E1C38.0 7E1C38.0 10E1C38.0 15E1C38.0 20E1C38.0 25E1C38.0 30E1C38.0 40E1C38.0 50E2C38.0 65E2C38.0 80E2C38.0 3E 7E 10E 15E 20E 25E 30E 40E 50E 65E 80E 27" 27" 27" 27" 27" 27" 27" 27" 27" 27" 27" 30 5 8" 30 5 8" 30 5 8" 30 5 8" 30 5 8" 30 5 8" 30 5 8" 30 5 8" 30 5 8" 30 5 8" 30 5 8" 20,000 20,000 20,000 20,000 20,000 20,000 20,000 20,000 20,000 20,000 20,000 4 4 4 4 4 4 4 4 5 5 5 Rated Rated Rated Rated www.littelfuse.com 7 (c) JUNE 2011 Littelfuse POWR-GARD Products POWR-GARD(R) Fuses--Medium Voltage E-Rated Medium Voltage Fuses Current-Limiting Dimensions in inches 4.75 Clip Lock Design E 5.5 Max. KV Clip Lock E 8.25 Max. KV Clip Lock Rated E 15.5 Max. KV Clip Lock Rated A B .25 3.0 1.25 Figure 7 system/Catalog Number 10E1CL5.5 15E1CL5.5 20E1C5.5 25E1CL5.5 30E1CL5.5 40E1CL5.5 50E1CL5.5 65E1CL5.5 80E1CL5.5 100E1CL5.5 125E1CL5.5 150E1CL5.5 225E2CL5.5 250E2CL5.5 300E2CL5.5 350E2CL5.5 400E2CL5.5 450E2CL5.5 500E3CL5.5 550E3CL5.5 600E3CL5.5 Size Dim. A (inches) Dim. B (inches) 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125E 150E 225E 250E 300E 350E 400E 450E 500E 550E 600E 16.38" 16.38" 16.38" 16.38" 16.38" 16.38" 16.38" 16.38" 16.38" 16.38" 16.38" 16.38" 17.38" 17.38" 17.38" 17.38" 17.38" 17.38" 17.38" 17.38" 17.38" 15.13" 15.13" 15.13" 15.13" 15.13" 15.13" 15.13" 15.13" 15.13" 15.13" 15.13" 15.13" 16.13" 16.13" 16.13" 16.13" 16.13" 16.13" 16.13" 16.13" 16.13" system/Catalog Number 10E1CL8.25 15E1CL8.25 20E1C8.25 25E1CL8.25 30E1CL8.25 40E1CL8.25 50E1CL8.25 65E1CL8.25 80E1CL8.25 100E1CL8.25 125E2CL8.25 150E2CL8.25 175E2CL8.25 200E2CL8.25 225E2CL8.25 250E2CL8.25 300E2CL8.25 350E3CL8.25 Size Dim. A (inches) Dim. B (inches) 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125E 150E 175E 200E 225E 250E 300E 350E 17.38" 17.38" 17.38" 17.38" 17.38" 17.38" 17.38" 17.38" 17.38" 17.38" 17.38" 17.38" 17.38" 17.38" 17.38" 17.38" 17.38" 17.38" 16.13" 16.13" 16.13" 16.13" 16.13" 16.13" 16.13" 16.13" 16.13" 16.13" 16.13" 16.13" 16.13" 16.13" 16.13" 16.13" 16.13" 16.13" system/Catalog Number 10E1CL15.5 15E1CL15.5 20E1CL15.5 25E1CL15.5 30E1CL15.5 40E1CL15.5 50E1CL15.5 65E1CL15.5 80E1CL15.5 100E1CL15.5 125E2CL15.5 150E2CL15.5 175E2CL15.5 200E2CL15.5 150E3CL15.5 200E3CL15.5 250E3CL15.5 300E3CL15.5 Size Dim. A (inches) Dim. B (inches) 10E 15E 20E 25E 30E 40E 50E 65E 80E 100E 125E 150E 175E 200E 150E 200E 250E 300E 19.8" 19.8" 19.8" 19.8" 19.8" 19.8" 19.8" 22.81" 22.81" 22.81" 22.81" 22.81" 22.81" 22.81" 22.81" 22.81" 22.81" 22.81" 18.1" 18.1" 18.1" 18.1" 18.1" 18.1" 18.1" 21.13" 21.13" 21.13" 19.1" 19.1" 19.1" 19.1" 19.1" 19.1" 19.1" 19.1" www.littelfuse.com 11.56 1.25 The clip lock type designs ensures a positive contact between the fuse and the connection cam. The fuse's clip lock tab slides in between the clip casting and the cam to prevent the fuse from slipping or blowing out of the holder. This positive contact improves heat dissipation and allows fuses to run cooler. Rated 7.94 8 Figure 8 Figure 9 Max Interrupting Rating RMS (Asym) 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 Figure Number 7 7 7 7 7 7 7 7 7 7 7 7 8 8 8 8 8 8 9 9 9 Max Interrupting Rating RMS (Asym) 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 80,000 Figure Number 7 7 7 7 7 7 7 7 7 7 8 8 8 8 8 8 8 9 Max Interrupting Rating RMS (Asym) 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 60,000 Figure Number 7 7 7 7 7 7 7 7 7 7 8 8 8 8 9 9 9 9 (c) JUNE 2011 Littelfuse POWR-GARD Products Fuses -- Medium Voltage POWR-GARD(R) Fuses--Medium Voltage E-Rated Potential transformer fuses Current-Limiting Description Characteristics Potential Transformer (PT) fuses are current-limiting fuses with high interrupting ratings designed for the protection of potential transformers. Voltage Ratings: Current Range: Application Note Dimensions When applying fuses for the protection of transformers, the magnetizing current in-rush must be considered. The characteristics of the in-rush, which can be matched with a fuse time-current curve, should be available from the transformer manufacturer. 625 VAC - 25,800 VAC 1/2E - 10E B A E system/Catalog Number Size Dimension A (inches) Diameter Dimension B (inches) Max Interrupting Rating RMS (Sym) 3E4PT6 5E4PT6 7E4PT6 10E4PT6 500E4PT2.4 1E4PT2.4 3E 5E 7E 10E 1/2E 1E 4.6" 4.6" 4.6" 4.6" 4.6" 4.6" 0.8125" 0.8125" 0.8125" 0.8125" 0.8125" 0.8125" 37,500 37,500 37,500 37,500 37,500 37,500 2E4PT2.4 2E 4.6" 0.8125" 37,500 1E6PT2.75 2E6PT2.75 3E6PT2.75 1E8PT2.75 2E8PT2.75 3E8PT2.75 1E5PT4.8 1E 2E 3E 1E 2E 3E 1E 7.4" 7.4" 7.4" 9.5" 9.5" 9.5" 5.6" 1.5625" 1.5625" 1.5625" 1.5625" 1.5625" 1.5625" 0.8125" 37,500 37,500 37,500 37,500 37,500 37,500 50,000 2E5PT4.8 2E 5.6" 0.8125" 50,000 1/2E6PT5.5 1E6PT5.5 2E6PT5.5 3E6PT5.5 5E6PT5.5 1/2E8PT5.5 1E8PT5.5 2E8PT5.5 3E8PT5.5 5E8PT5.5 10E8PT5.5 1/2E8PT8.25 1E8PT8.25 2E8PT8.25 3E8PT8.25 1/2E11PT15.5 1E11PT15.5 2E11PT15.5 3E11PT15.5 3E16PT15.5 5E16PT15.5 1/2E 1E 2E 3E 5E 1/2E 1E 2E 3E 5E 10E 1/2E 1E 2E 3 1/2E 1E 2E 3E 3E 5E 7.4" 7.4" 7.4" 7.4" 7.4" 9.5" 9.5" 9.5" 9.5" 9.5" 9.5" 9.5" 9.5" 9.5" 9.5" 12.8" 12.8" 12.8" 12.8" 17.5" 17.5" 1.5625" 1.5625" 1.5625" 1.5625" 1.5625" 1.5625" 1.5625" 1.5625" 1.5625" 1.5625" 1.5625" 1.5625" 1.5625" 1.5625" 1.5625" 1.5625" 1.5625" 1.5625" 1.5625" 1.5625" 1.5625" 50,000 50,000 50,000 50,000 50,000 50,000 50,000 50,000 50,000 50,000 50,000 50,000 50,000 50,000 50,000 35,000 35,000 35,000 35,000 35,000 35,000 1/2E16PT25.5 1/2E 17.5" 1.5625" 32,000 1E16PT25.5 1E 17.5" 1.5625" 32,000 25.8 Max. kV 15.5 Max. kV 8.25 Max. kV 5.5 Max. kV 4.8 Max. kV 2.75 Max. KV 2.75 Max. kV 625 Volt Rated www.littelfuse.com 9 (c) JUNE 2011 Littelfuse POWR-GARD Products POWR-GARD(R) Fuses--Medium Voltage live parts Description Live parts are available for mounting E, R, and PT single, double, and triple barrel fuses. Mounting clips are available for ferrule type and clip lock style fuses. All clips are sold in pairs. Part Number: 700-156 Part Number: 700-300 System Number: 0700156.Z System Number: 0700300.Z For use with 19/16" to 15/8" (1.625") diameter PT fuses. For use with 3" diameter fuses. Dimensions in inches Dimensions in inches 2.00 3.74 2.85 Part Number: 700-500 Part Number: 700-530 .08 System Number: 0700500.Z System Number: 0700530.Z For use with all 13/16" (.8125") diameter PT fuses For use with all 3" diameter fuses. Dimensions in inches Dimensions in inches .31 .71 .30 .78 1.15 .038" HOLES .08 1.50 4.50 .05 3.08 4.16 .78 .63 Part Number: 700-520-CL Mounting Details for Clip Lock Dimensions in inches System Number: 0700520.ZXCL Clip Lock Design 3.63 TRIPLE BARREL 3.63 DOUBLE BARREL 4.85 SINGLE BARREL 1.75 Blown Fuse Indicator 2.00 4.9 Dimensions for reference only. www.littelfuse.com Bottom Lever In Closed Position 3.75 2.00 Top Lever in Open Position TOP VIEW 10 A 1.00 2.00 .56 Dia. (2) Holes For Mounting Cable/Bus .44 DIA. (2) HOLES (c) JUNE 2011 Littelfuse POWR-GARD Products