Schneider Electric 9421LK1LS-12 Operating Mechanism

Schneider Electric’s 9421LK1LS-12 is a door-mounted operating mechanism (Class 9421, Type LK1) with a long-shaft LS12 kit designed to drive 2- or 3-pole Square D KAL, KCL, and KHL molded‑case circuit breakers, rated at 250 A. The kit pairs a rotary handle with the LK1 mechanism and includes the LS12 long shaft, enabling extended reach for deeper enclosures and mounting depths from 6-1/4 in to 21-3/4 in. It is compatible with NEMA 1, 3R, and 12 enclosures and is used with Square D 9421 door-mounted mechanisms, making it suitable for industrial panels where door‑actuated operation is required. The 9421LK1LS-12 assembly is part of the 9421 family and is intended to operate KAL/KCL/KHL breakers, providing secure manual operation with padlock capability in the OFF position when the enclosure door is open.