Schneider Electric 9421LN-3 Operating Mechanism

9421LN3 is a rotary-handle operating mechanism designed for Schneider Electric’s Class 9421 door-mounted control systems used with Square D FAL, FCL, and FHL circuit breakers. This 100 A, 600 VAC-rated mechanism features a 3-inch handle and a long shaft to accommodate 2- or 3-pole installations and deeper mounting depths. It is part of the LN-series variants within Class 9421, with compatibility that includes 9421LF1, LN1, LN3, LN4, LL1, LR1, and LR4 breakers, enabling manual operation from a control panel or enclosure door. The LN3 variant provides a longer reach for easier operation in recessed door configurations while preserving standard mounting patterns of the 9421 family. Typical applications include industrial electrical panels and distribution enclosures requiring a door-mounted mechanism to actuate breakers in environments where a reliable rotary handle is preferred for manual operation.