400 A MCCB with EKIP DIP LSIG Trip — Sourcing Note
The LSIG designation means it provides protection against long-time (L) overloads, short-time (S) short circuits, instantaneous (I) faults, and ground fault (G) — full four-function protection for a main feeder or large motor branch. The 3-pole construction and fixed front terminals (FF) suit it for panelboard or switchboard mounting where copper bus or cable lugs land directly on the breaker. UL/CSA listing confirms acceptance for North American installations up to the breaker's SCCR rating.
The 400 A frame size drives the physical footprint and lug capacity. The EKIP DIP LSIG trip unit allows field-adjustable pickup and delay settings via DIP switches, so the same breaker can be tuned for feeder protection (longer time bands) or motor branch (higher instantaneous) without swapping the trip unit.