60 electrical characteristics: % of ampere opening rating time 110% 4 hours, min imum 135% 1 hour, max imum 200% 5 seconds, min imum agency approvals: listed by underwriters laboratories and certified by csa. approved by miti from 1 through 5 amperes. patented ordering information: axial lead and cartridge fuses designed to meet ul/csa standards 5 x 20 mm time lag fuse (slo-blo type fuse) u l 239 000 series 238 000 series 5 (.197") 5.25 (.207") 20.24 (.797") 40 (1.58") .635 (.025") 20 (.787") designed to ul/csa/ance 248 standard. available in cartridge and axial lead format. available in ratings of 0.200 to 5 amperes. cartridge axial lead nominal nominal catalog catalog ampere voltage resistance melting i 2 t number number rating rating cold ohms a 2 sec. 239 .200 238 .200 .200 250 8.40 0.170 239 .250 238 .250 .250 250 3.00 0.3508 239 .300 238 .300 .300 250 2.25 0.630 239 .400 238 .400 .400 250 1.46 1.53 239 .500 238 .500 .500 250 0.865 2.04 239 .600 238 .600 .600 250 0.688 2.48 239 .700 238 .700 .700 250 0.550 4.23 239 .750 238 .750 .750 250 0.453 5.57 239 .800 238 .800 .800 250 0.403 7.77 239 001 238 001 1 250 0.313 11.60 239 1.25 238 1.25 1.25 250 0.200 20.05 239 01.6 238 01.6 1.60 250 0.122 31.25 239 002 238 002 2 250 0.0975 51.95 239 02.5 238 02.5 2.50 250 0.053 81.85 239 003 238 003 3 250 0.0480 133.0 239 3.15 238 3.15 3.15 250 0.0425 131.5 239 004 238 004 4 125 0.0313 278.0 239 005 238 005 5 125 0.0208 311.0 100 1000 10 1 0.1 current in amperes 10000 1000 100 10 1 0.1 0.01 0.001 time in seconds .200a .250a .300a .400a .500a .600a .700a .750a .800a 1a 1.25a 1.60a 2a 2.50a 3.15a 3a 4a 5a average time current curves
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