Westinghouse | NC21000 | Circuit Breaker | 3-Pole

Westinghouse NC21000 3-Pole Circuit Breaker is built to protect three-phase power systems with dependable performance. Designed for maintenance, retrofit, and replacement projects where exact specifications matter, this breaker helps you keep your panel safe, compliant, and up to code. The part number NC21000 is the best reference for compatibility, ensuring you match the right frame, trip characteristics, and installation footprint.

Key benefits

• Three-pole design supports standard 3-phase circuits, making it ideal for industrial panels and commercial distribution where balanced protection is essential.
• Exact compatibility reference rely on the NC21000 part number to align with your panel’s frame, mounting method, and trip profile.
• Versatile for maintenance, retrofit, and replacement — swap into compatible Westinghouse or Westinghouse-compatible panels without major rewiring or redesign.
• Clear fit and rating verification note: Confirm fit and ratings before ordering to ensure you select the correct current rating and interrupting capacity for your specific setup.
• Reliability you can trust from a time-tested name in circuit protection, delivering consistent protection in demanding environments.

Use cases in the real world

Maintenance scenarios: replace aging or worn 3-pole breakers to restore precise protection and minimize downtime in critical equipment. Retrofit projects: upgrade an older panel by introducing a compatible NC21000 without altering wiring layouts or mounting positions. Replacement needs: when a panel specifies the NC21000, this part ensures you meet the exact specification required by your system.

Who benefits most

• Electrical contractors performing panel upgrades, service calls, or field replacements
• Facilities managers responsible for commercial or light industrial power distribution
• Maintenance technicians tasked with safeguarding three-phase equipment and processes

Pair the Westinghouse NC21000 3-Pole Circuit Breaker with compatible panels and protections to maintain a cohesive, reliable electrical protection strategy. Secure this essential component today to ensure robust three-phase protection across your distribution system.