Square D LX36400G – 400A 3 Pole Molded Case Circuit Breaker Clearance

Built for advanced coordination, this 400A electronic trip breaker incorporates LSIG functions to safeguard against ground faults, overloads, and short circuits. The device secures into Square D I-Line panelboards, featuring a specialized plug-on jaw design for the line side. Equipped with a highly configurable Micrologic trip unit, it ensures reliable solid-state protection. For modern upgrades, this legacy frame is replaced by the LJA36400U44X along with an HNM1BL filler plate.