Westinghouse 373D958G01 Vari-Depth Mechanism FA-frame Magnetic Breaker

Description:

The Westinghouse 373D958G01 Vari-Depth Mechanism is a circuit breaker operating mechanism designed for Westinghouse FA-frame magnetic circuit breakers. It provides external manual operation of a circuit breaker mounted inside an enclosure while accommodating varying enclosure depths. The mechanism allows safe ON/OFF operation from the enclosure door and is commonly used in switchboards, motor control centers, industrial control panels, and power distribution equipment where breaker access is required without opening the enclosure. Vari-depth mechanisms are specifically designed to adapt to different panel depths through an adjustable shaft arrangement.

Applications:

The Westinghouse 373D958G01 vari-depth mechanism is commonly used in industrial switchgear, motor control centers, electrical distribution panels, manufacturing facilities, utility power systems, and OEM electrical equipment where FA-frame magnetic circuit breakers require external operation through enclosure-mounted handles while maintaining personnel safety and enclosure integrity.

Technical Specifications:

• Manufacturer: Westinghouse
• Part Number: 373D958G01
• Product Type: Vari-Depth Operating Mechanism
• Compatible Breaker Series: FA Magnetic Circuit Breakers
• Application Type: Circuit Breaker Operating Accessory
• Function: External breaker operation through enclosure door
• Operating Method: Manual rotary handle mechanism
• System Compatibility: Westinghouse FA-Frame Breakers
• Installation Environment: Switchgear and electrical enclosures
• Mounting Type: Door-mounted operating mechanism
• Mechanical Function: Adjustable-depth breaker actuation
• Safety Feature: Allows breaker operation without opening enclosure
• Industry Use: Industrial power distribution and motor control
• Compatible Equipment: Switchboards, MCCs, and panelboards
• Service Application: Replacement and retrofit projects
• Equipment Category: Circuit Breaker Accessory Hardware

Common Replacements:

• Eaton Vari-Depth Handle Mechanism
• Cutler-Hammer FA Frame Operating Mechanism
• Siemens Rotary Breaker Operating Mechanism