Westinghouse | NB31200 | Circuit Breaker | 1200A | 3-Pole | 600V

The Westinghouse NB31200 Circuit Breaker is a purpose-built protection device engineered for demanding industrial and commercial electrical systems. Delivering a robust 1200 A rating across a 3-pole configuration and handling up to 600 V, this breaker is designed to safeguard large feeders, service entrances, and heavy machinery with dependable performance.

• Amperage: 1200 A
• Poles: 3-Pole
• Voltage: 600 V
• Reference: Part number NB31200 is the best compatibility anchor for replacement or retrofit projects

Why choose the NB31200 for your panel? This model is a precise, drop-in solution for maintenance, retrofit, or replacement tasks where matching specifications are essential. By sticking to the NB31200 designation, you minimize the risk of mismatched trip characteristics or mounting differences—and you can proceed with confidence in panel compatibility and electrical protection profiles.

Ideal use cases

• Replacing a failed or aging 3-pole breaker in large distribution panels and switchgear within manufacturing facilities, data centers, or commercial complexes
• Retrofit projects where a higher current protection level (1200 A) is required on heavy-load feeders
• Maintenance cycles that demand a reliable, field-proven 600 V, 3-pole protection solution

Practical guidance for ordering and installation

• Always confirm fit and ratings before ordering by using NB31200 as the primary compatibility reference with your panel schedule and manufacturer guidelines
• Ensure the system voltage and current paths align with the 600 V / 1200 A specifications to maintain intended protective performance
• Coordinate with a qualified electrician to verify mounting, bus configuration, and enclosure compatibility prior to replacement or retrofit

Performance that counts, with a design you can trust in high-demand environments. The Westinghouse NB31200 is more than a component—it's a deliberate choice for protecting critical electrical infrastructure, reducing unplanned downtime, and supporting steady, safe operation across large-scale systems.