Westinghouse 100KA - 40A, Circuit Breaker

Westinghouse 100KA - 40A Circuit Breaker

When dependable overcurrent protection is non-negotiable, the Westinghouse 100KA - 40A Circuit Breaker delivers. With a 40-amp nominal rating and a robust interrupting capacity of 100 kA, this breaker is engineered to interrupt faults quickly and safely, protecting wiring, transformers, and connected loads in your critical electrical systems.

Designed for industrial and commercial environments, it integrates smoothly into panelboards, switchboards, control panels, and OEM equipment. Whether you're feeding a machine shop line, a motor control center, or a building automation panel, this breaker provides reliable protection without sacrificing performance or space.

Key advantages

• Precise protection at 40A to guard circuits and motors against overloads while minimizing nuisance trips.
• High interrupting capacity (100 kA) to handle large fault currents and safeguard downstream equipment.
• Versatile compatibility for panelboards, switchboards, control panels, and OEM assemblies.
• Durable construction designed for continuous operation in demanding environments.

What this means for you

In industrial settings, fewer interruptions mean higher uptime. This Westinghouse breaker reduces the risk of arc-flash and equipment damage by interrupting faults at the source, protecting wiring, motors, drives, and control circuits. For OEM integrations, its proven reliability ensures your equipment meets safety and performance standards without frequent maintenance overhead.

Use cases

• Industrial panels and motor control centers requiring dependable 40A protection.
• Panelboards and switchboards in commercial facilities where space is at a premium but protection must not be compromised.
• OEM equipment builds needing a trusted, high-capacity interrupting breaker.