Westinghouse 373D958G14 Circuit Breaker Vari-Depth Mechanism

The Westinghouse 373D958G14 Vari-Depth Mechanism is a door-mounted operating accessory that provides external manual operation for Westinghouse KB-frame molded case circuit breakers. It uses an adjustable shaft and linkage assembly to fit different enclosure depths while delivering reliable actuation and maintaining operator safety by allowing operation without opening the enclosure. Designed for switchboards, motor control centers, industrial control panels, and other power distribution equipment, it enables the breaker to be actuated through the enclosure door via a manual rotary handle. Compatible with Westinghouse KB Frame Breakers, this mechanism is installed as a door-mounted device for external actuation in switchgear and panelboard configurations. Part Number 373D958G14; manufacturer Westinghouse / Cutler-Hammer / Eaton. Common replacements include Eaton KB Frame Vari-Depth Mechanism, illustrating cross-compatibility within KB-frame accessories for retrofit or replacement projects.