Effective May 2017 Supersedes April 2009 Technical Data 2027 C520 5 mm x 15 mm Fast-acting glass tube fuses Agency information * UL Listed Card: Guide JDYX, File E19180 * CSA Certification Card: Class 1422-01, 53787 Ordering * Specify product code: Insert packaging code prefix before part number. E.g. BK (or BK1)/C520-500-R Rated Current 100mA - 5A Product features * * * * Fast-acting 5 x 14.48mm physical size Glass tube, nickel-plated brass endcap construction UL Listed product meets standard UL 248-14 Part Number C520-100-R C520-125-R C520-250-R C520-375-R C520-500-R C520-750-R C520-1.5-R C520-2-R C520-2.5-R C520-3-R C520-3.5-R C520-4-R C520-5-R Voltage Rating Vac 250 250 250 250 250 250 250 250 250 250 250 250 250 Specifications Interrupting Rating at Rated Voltage (amps) 250Vac 125Vac 35 10,000 35 10,000 35 10,000 35 10,000 35 10,000 35 10,000 100 10,000 100 10,000 100 10,000 100 10,000 100 10,000 200 10,000 200 10,000 Electrical Characteristics Amp Rating Opening Time 100% None 135% 1 hours max. 200% 2 seconds max. Typical DC Cold Resistance* () 22.30 15.20 5.60 2.53 1.66 0.91 0.900 0.064 0.046 0.038 0.032 0.022 0.018 * DC Cold Resistance (Measured at <10% of rated current) ** Typical Melting I 2t (A 2Sec) (maximum I 2t at 10 times rated current) *** Typical Voltage Drop (Voltage drop was measured at 25C3C ambient temperature at rated current) Typical Melting I 2t** AC 0.0010 0.0019 0.012 0.039 0.059 0.264 0.800 1.9 2.9 6.1 9.7 16.6 22.4 Typical Voltage Drop (mV)*** 2230 1930 1450 968 845 686 135 136 121 116 115 88 91 C520 5 mm x 15 mm Fast-acting glass tube fuses Technical Data 2027 Effective May 2017 Time-Current Curve Dimensions - mm Drawing Not to Scale 14.48 5.2 5.0 (Typ.) Time in Seconds Amp Rating Current in Amps Packaging Code Prefix BK BK1 Packaging Code Description 100 fuses packed into a cardboard carton 1,000 fuses packed into a cardboard carton Life Support Policy: Eaton does not authorize the use of any of its products for use in life support devices or systems without the express written approval of an officer of the Company. Life support systems are devices which support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Eaton also reserves the right to change or update, without notice, any technical information contained in this bulletin. Eaton Electronics Division 1000 Eaton Boulevard Cleveland, OH 44122 United States www.eaton.com/electronics (c) 2017 Eaton All Rights Reserved Printed in USA Publication No. 2027 BU-SB09252 May 2017 Eaton is a registered trademark. All other trademarks are property of their respective owners. Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Eaton: BK/C520-3A BK/C520-250MA BK/C520-500MA BK/C520-375MA BK/C520-2A BK/C520-2.5-R BK/C520-100-R BK/C520-2-R BK/C520-250-R BK/C520-3-R BK/C520-3.5-R BK/C520-375-R BK/C520-4-R BK/C520-500-R BK/C520-125-R BK/C520-5-R BK/C520-750-R BK-C520-1-5-R BK1-C520-250-R BK1-C520-3-R BK1-C520-500-R BK-C520-1 BK/C520-5A BK/C520-4A BK/C520-125MA BK/C520-750MA BK/C520-1 BK1/C520-500-R BK1/C5203-R BK1/C520-250-R BK1/C520B-1A BK/C520-1.5-R