Part FLSR175 is a 175A member of the Littelfuse FLSR Series with a 600V AC / 300V DC rating. It combines dual-element Class RK5 fuse performance with a documented 200kA AC interrupting rating. Confirm application details against the manufacturer datasheet.
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FLSR175 is Littelfuse’s 175A configuration in the FLSR Series, built as a Dual-Element Time-Delay Class RK5 Fuse for 600V AC / 300V DC service. With a Class R form factor, the part is intended for cartridge / clip mounting and carries a 200kA AC primary rating. Published dimensions for this rating/configuration are 244.5mm length; ~46mm max body diameter. Its dual-element time-delay behavior is intended to ride through normal motor inrush while protecting against overloads and short circuits. Typical uses cover Motor, Transformer, Service Entrance, Feeder Circuits, general-purpose circuits. Check UL 248-12 and the manufacturer datasheet before final selection.
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