Specified for PCB protection, Littelfuse 37211250511 provides a 1.25A 250V TR5 time-lag rating in a compact radial through-hole format with its specified lead option.
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For replacement and selection work, Littelfuse 37211250511 provides 1.25A time-lag protection at 250V AC in the TR5 radial format. The through-hole fuse uses 3.3mm radial leads, a compact Ø8.5 × 8mm maximum body, and published breaking capability of 35A @ 250VAC. Its melting integral at 10× rated current is 13.75 A²s for coordination work. Check ambient derating and available fault current against the manufacturer data before final selection. Compare speed, approvals and mounting details before treating another fuse as an equivalent.
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