blade terminal & special purpose fuses 450 www.littelfuse.com low voltage ato fuse fast-acting type designed and originated by littelfuse for the automotive industry, the ato fuse has become the original equipment circuit protection standard for foreign and domestic automobiles and trucks. readily identifiable and easily replaced, this fuse can be specified for a variety of low voltage electronic applications. electrical characteristics: % of ampere ampere opening rating rating time 110% 1 40 amp 100 hours min imum 135% 1 2 amp .50 sec., min. ; 600 sec., max. 3 40 amp .75 sec., min. ; 600 sec., max. 200% 1 2 amp .10 sec., min. ; 5 sec., max. 3 40 amp .15 sec., min. ; 5 sec., max. 350% 1 2 amp .020 sec., min. ; 0.5 sec., max. 3 40 amp .080 sec., min. ; 0.5 sec., max. agency approvals: listed by underwriters laboratories (1 40 amperes). certified by csa (3 30 amperes). design standards: u.l. standard for automotive blade type fuses. sae (society of automotive engineers) j1284. patented color-coding: autofuse fuses are color-coded for easy amperage identification. interrupting rating: 1000a @ 32vdc ordering information: average time current curves ampere voltage body nominal cold minimum catalog rating rating color resistance melting i 2 t number (a) (vdc) code ohms (a 2 sec.) 257 001 1 32 black 0.123 .4 257 002 2 32 grey 0.050 1.4 257 003 3 32 violet 0.031 7.4 257 004 4 32 pink 0.023 14 257 005 5 32 tan 0.018 26 257 07.5 7 1 / 2 32 brown 0.011 60 257 010 10 32 red 0.0077 115 257 015 15 32 blue 0.0048 340 257 020 20 32 yellow 0.0033 520 257 025 25 32 natural 0.0025 1080 257 030 30 32 green 0.0019 1510 257 035 35 32 blue green 0.0016 2280 257 040 40 32 orange 0.0014 3310 reference pg. 344, ato fuse clip for p.c. board mounting. 5.08 (.20") 0.66 (.026") 19.05 (.75") 14.48 (.57") 12.19 (.48") 6.35 (.25") 4.064 (.16") reference dimensions u l 1000 100 10 1 0.1 0.01 1000 100 10 1 time in seconds current in amperes 1a 2a 3a 4a 10a 15a 20a 25a 30a 35a 40a 7.5a 5a rohs
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