Effective May 2017 Technical Data 2027 Supersedes April 2009 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 Electrical Characteristics Rated Current Amp Rating Opening Time 100% None 100mA - 5A 135% 1 hours max. Product features 200% 2 seconds max. Fast-acting 5 x 14.48mm physical size Glass tube, nickel-plated brass endcap construction UL Listed product meets standard UL 248-14 Speci cations Voltage Interrupting Rating Typical DC Cold Typical Typical 2 Part Number Rating at Rated Voltage (amps) Resistance* Melting I t** Voltage Vac 250Vac 125Vac () AC Drop (mV)*** C520-100-R 250 35 10,000 22.30 0.0010 2230 C520-125-R 250 35 10,000 15.20 0.0019 1930 C520-250-R 250 35 10,000 5.60 0.012 1450 C520-375-R 250 35 10,000 2.53 0.039 968 C520-500-R 250 35 10,000 1.66 0.059 845 C520-750-R 250 35 10,000 0.91 0.264 686 C520-1.5-R 250 100 10,000 0.900 0.800 135 C520-2-R 250 100 10,000 0.064 1.9 136 C520-2.5-R 250 100 10,000 0.046 2.9 121 C520-3-R 250 100 10,000 0.038 6.1 116 C520-3.5-R 250 100 10,000 0.032 9.7 115 C520-4-R 250 200 10,000 0.022 16.6 88 C520-5-R 250 200 10,000 0.018 22.4 91 * DC Cold Resistance (Measured at <10% of rated current) 2 2 2 ** Typical Melting I t (A Sec) (maximum I t at 10 times rated current) *** Typical Voltage Drop (Voltage drop was measured at 25C3C ambient temperature at rated current)C520 Technical Data 2027 Effective May 2017 5 mm x 15 mm Fast-acting glass tube fuses Time-Current Curve Dimensions - mm Drawing Not to Scale 14.48 5.2 5.0 (Typ.) Amp Rating Current in Amps Packaging Code Packaging Code Pre x Description BK 100 fuses packed into a cardboard carton BK1 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 2017 Eaton Eaton is a registered trademark. All Rights Reserved Printed in USA All other trademarks are property Publication No. 2027 BU-SB09252 of their respective owners. May 2017 Time in Seconds