Westinghouse 12NC1000 1000A 3P 600V Circuit Breaker, Bolt-On, Normally Closed | AmpState

The Westinghouse 12NC1000 is a robust circuit breaker designed for reliable protection in panelboards, load centers, and electrical distribution networks. Built for retrofit work and maintenance planning, this part number remains consistent to minimize downtime and ease service logistics, making it a dependable choice for ongoing facility operations.

With a 1000 A ampacity, 3 poles, and a 600 V rating, the 12NC1000 delivers heavy‑duty performance for large feeders and critical circuits. The bolt‑on mounting style simplifies field replacement, allowing technicians to swap in a like‑for‑like device quickly during maintenance windows or upgrades, reducing outage time and accelerating project timelines. The device is configured as normally closed, ensuring circuits remain energized and ready for protection until an intentional trip is required.

Where this breaker shines

• Ideal for modernizing existing panelboards and distribution systems without changing the surrounding hardware or wiring schemes. The consistent 12NC1000 part number helps keep inventory predictable and ordering straightforward.
• A reliable spare in service fleets and maintenance inventories, so when a fault or upgrade arises, a direct replacement is on hand.
• 1000 A capacity supports heavy‑duty feeders and large circuits in commercial or light industrial installations, helping safeguard equipment and personnel.
• Bolt‑on mounting reduces on‑site complexity and downtime, making installation and future servicing more efficient.
• Available from AmpState with support for fitment confirmation and compatibility checks to ensure you get the right breaker for your panel.

Key specifications at a glance: Westinghouse brand normal‑closed circuit breaker, 12NC1000 part number, 1000 A rating, 3 poles, 600 V, bolt‑on mounting. These details matter when matching a breaker to your panelboard’s protection needs and electrical distribution strategy.

Who should consider this breaker? Electrical professionals overseeing panelboard upgrades, facilities managers coordinating retrofit projects, and service teams that require a dependable, spare‑ready 1000 A, 3‑pole device with straightforward bolt‑on installation. It’s especially valuable when you must preserve a consistent part number across a fleet of panels to simplify maintenance logistics and future replacements.

If you’re unsure about compatibility, AmpState offers assistance to confirm fit for your specific panel and layout. Reach out with your project details, and they’ll help verify that the 12NC1000 meets your protection and installation requirements, ensuring seamless integration with your electrical distribution system.