Westinghouse | NB21200S | Circuit Breaker | 1200A | 2-Pole | 600V | Bolt-On

Meet the Westinghouse NB21200S Circuit Breaker — a high-capacity, bolt-on protective device engineered for reliability in demanding electrical installations. With a 1200 A amperage rating, 2-pole configuration, and 600 V maximum, this breaker is designed to handle heavy loads while maintaining clear, predictable trip behavior when faults occur.

Designed for maintenance, retrofit, and replacement projects, the NB21200S supports quick field swaps and secure mounting. The bolt-on design enables solid connections in compatible panels, reducing installation time and minimizing service downtime.

• Amperage rating: 1200 A for robust overcurrent protection in heavy-load circuits
• Pole configuration: 2-pole design to protect two conductors and support simultaneous disconnection
• Voltage rating: 600 V, suitable for a wide range of industrial and commercial systems
• Mounting: Bolt-on installation for dependable, time-saving service in the field
• Compatibility reference: Part number NB21200S is the clearest indicator for matching fit and ratings

Ideal for professionals maintaining Westinghouse panels or retrofitting older gear to meet current protection requirements, this breaker helps keep critical equipment powered safely and reliably. Use cases include upgrading feeder protection, replacing failed breakers, or stocking a ready-to-install spare for service teams.

Important: Confirm fit and ratings before ordering. The NB21200S part number is the best reference for compatibility with your panel and electrical system.