Westinghouse | NB21200WK | Circuit Breaker | 1200A | 2-Pole | 600V

Introducing the Westinghouse NB21200WK Circuit Breaker — a rugged, high-capacity protection device engineered for demanding electrical systems. Rated at 1200A and 600V, this 2-pole breaker is designed to reliably interrupt power on heavy-load circuits while supporting maintenance, retrofit, and replacement projects where exact specifications matter.

Designed for exact-fit replacements, this unit is identified by its part number NB21200WK. Verifying the correct part number is the fastest way to guarantee compatibility with your panel and existing safety margins. The 2-pole configuration ensures simultaneous disconnection of both conductors, delivering safer fault isolation in commercial and industrial installations.

Key specifications at a glance

• Amperage: 1200A
• Poles: 2-Pole
• Voltage: 600V

Why this NB21200WK stands out

• Exact-fit reliability: The NB21200WK is purpose-built for situations where matching the original specifications matters, reducing guesswork during maintenance or retrofit.
• Safer fault isolation: A two-pole design guarantees both lines clear simultaneously, minimizing arc risk and protecting downstream equipment.
• High-current capability: With a 1200A rating, this breaker supports substantial load requirements common in industrial panels and large commercial feeders.
• Versatile retrofit option: Ideal for upgrading panels, replacing failed breakers, or refreshing legacy systems that require the NB21200WK footprint and performance.

Ideal use cases

• Maintenance and service on panels originally configured for 2-pole, high-amperage protection.
• Retrofits where upgrading to a 1200A, 600V, 2-pole solution is needed to meet changing load demands.
• Replacement of a failed or aging circuit breaker in Westinghouse-compatible systems, ensuring continued protection with a proven part number NB21200WK.

Practical guidance for purchasing

• Always confirm fit and ratings before ordering. The part number NB21200WK is the most reliable reference for compatibility.
• Cross-check your panel labeling to ensure a 2-pole, 1200A, 600V configuration matches your electrical design and safety requirements.
• Consider your system’s fault-current levels and downstream protection when planning an upgrade or replacement to ensure a seamless integration.

Whether you’re performing routine maintenance, retrofitting an aging installation, or replacing a failed device, the Westinghouse NB21200WK Circuit Breaker delivers dependable protection with precise compatibility. Rely on the exact part number to safeguard your equipment, personnel, and uptime.