Within Littelfuse’s FLSR Series, FLSR.400 is specified for 0.4A service at 600V AC / 300V DC. Its protection profile centers on dual-element Class RK5 fuse operation plus 200kA AC fault interruption. Refer to the official datasheet for final coordination.
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The FLSR Series catalog number FLSR.400 delivers a 0.4A rating and 600V AC / 300V DC operating capability. A Class R body supports cartridge / clip installation, and the manufacturer lists 200kA AC as the principal interrupting capability. Published dimensions for this rating/configuration are 127.0mm length; 20.7mm max body diameter. Its dual-element time-delay behavior is intended to ride through normal motor inrush while protecting against overloads and short circuits. Applications include Motor, Transformer, Service Entrance, Feeder Circuits, general-purpose circuits. Confirm final suitability with the official datasheet and UL 248-12.
USCC4I
30A · 600VAC / 600VDC
USCC4
30A · 600VAC / 600VDC
USCC3N
30A · 600VAC / 600VDC
USCC3IN
30A · 600VAC / 600VDC
USCC3I
30A · 600VAC / 600VDC
USCC3
30A · 600VAC / 600VDC
USCC2I
30A · 600VAC / 600VDC
USCC2
30A · 600VAC / 600VDC