Westinghouse 457D943G21 2-3 Pole Type JA-KA Mechanical Interlock Switch Brea

Description:

The Westinghouse 457D943G21 Mechanical Interlock is used in industrial circuit breaker interlock and electrical safety systems. Commonly installed in JA-KA type breaker assemblies, switchgear equipment, and industrial power distribution systems in manufacturing and utility facilities. Maintenance teams, OEM operators, and system integrators use this Westinghouse mechanical interlock for breaker safety replacement, electrical maintenance, and retrofit projects.

Applications:

The Westinghouse 457D943G21 Mechanical Interlock is designed for industrial electrical applications requiring coordinated breaker operation and operational safety protection. Common applications include switchgear systems, molded case circuit breaker assemblies, motor control centers, and industrial power distribution equipment used in manufacturing plants, utility operations, and processing facilities.

Technical Specifications:

• Manufacturer Part Number (MPN): 457D943G21
• Product Type: Mechanical Interlock
• Brand: Westinghouse
• Breaker Type Compatibility: Type JA-KA
• Pole Configuration: 2-3 Pole
• Function: Mechanical breaker interlocking and safety control
• Application Type: Industrial circuit breaker systems
• Mounting Type: Breaker-mounted assembly
• Industrial Compatibility: Switchgear, MCC systems, breaker equipment
• Construction Type: Industrial-duty mechanical safety component

Common Replacements:

• Eaton JA-KA Mechanical Interlock KPRL3
• Westinghouse 457D943G22 Mechanical Interlock
• Cutler-Hammer JA Frame Mechanical Interlock JT3200MK