Description
• Axial-leaded fast-acting
• 5 x 15mm physical size
• Nickel-plated brass endcap construction
• Optional insulation sleeve is flexible flouropolymer
(UL Flammability rating VW-1).
• UL Listed product meets standard UL 248-14
Agency Information
• UL Recognition Card: Guide JDYX2, File E19180
• CSA Certification Card: Class 1422-01, File 53787
Ordering
Specify product code
• Insert packaging code prefix before part number. E.g.
BK (or TR2)/C518-2-R
Specify option code, if desired
• For insulation sleeve, insert “S” after part series. E.g.
BK/C518S-2-R
• With TR2 packaging code, lead wire length is 20.3mm
Dimensions - mm
Drawing Not to Scale
Specifications
Voltage Interrupting Rating Typical DC Cold Typical Max
Part Number Rating at Rated Voltage (amps) Resistance* Melting I
2
t** Voltage
Vac 250Vac 125Vac (
ΩΩ
) AC Drop (mV)***
C518-100-R 250 35 10,000 22.30 0.0010 2230
C518-125-R 250 35 10,000 15.20 0.0019 1930
C518-250-R 250 35 10,000 5.66 0.012 1450
C518-375-R 250 35 10,000 2.53 0.039 968
C518-500-R 250 35 10,000 1.66 0.059 845
C518-750-R 250 35 10,000 0.91 0.264 686
C518-1.5-R 250 100 10,000 0.900 0.800 135
C518-2-R 250 100 10,000 0.064 1.9 136
C518-2.5-R 250 100 10,000 0.046 2.9 121
C518-3-R 250 100 10,000 0.038 6.1 116
C518-3.5-R 250 100 10,000 0.032 9.7 115
C518-4-R 250 200 10,000 0.022 16.6 88
C518-5-R 250 200 10,000 0.018 22.4 91
* DC Cold Resistance (Measured at <10% of rated current)
** Typical Melting I
2
t (A
2
Sec) (Minimum at 10 times rated current)
***Typical Voltage Drop (Voltage drop was measured at 20°C ambient temperature at rated current)
Electrical Characteristics
Rated Current Amp Rating Opening Time
100% None
100mA-5A 135% 60 minutes max.
200% 2 seconds max.
5 x 15mm Fast-Acting Glass Tube Fuses
C518 Series
0909 BU-SB09718 Page 1 of 2 Data Sheet 2026
