Westinghouse | NBY31200 | Circuit Breaker | 1200A | 3-Pole | 240V | Bolt-On

Meet the Westinghouse NBY31200 Circuit Breaker — a purpose-built, three-pole, 240V bolt-on device designed for demanding power distribution tasks in commercial and industrial panels. With a 1200A rating, it delivers reliable, controlled protection for large-load three-phase circuits while offering straightforward, field-serviceable installation.

Compatibility and fit are essential. Use the part number NBY31200 as your primary reference to ensure a precise match. Confirm the breaker’s fit and electrical ratings before ordering to avoid compatibility issues in your panel or enclosure.

• Amperage: 1200A — suitable for high‑demand feeders and large motor circuits
• Poles: 3-Pole — intended for balanced 3‑phase protection
• Voltage: 240V — designed for standard 3‑phase commercial/industrial systems
• Mounting: Bolt-On — enables secure, straightforward installation or replacement in compatible panels
• Best use: Maintenance, retrofit, and replacement when exact specs are required

This breaker is especially well-suited for upgrading or servicing panels that demand a high-current, three‑phase protection solution without extensive panel modification. Ideal scenarios include large equipment feeders, HVAC and cooling systems, industrial manufacturing lines, and data-center power distribution where precision, reliability, and quick replacement are priorities.

Practical guidance for ordering and installation (without stepping beyond provided specs): before purchase, verify that your panel requires a 3‑pole, 240V bolt-on breaker rated at 1200A and that the NBY31200 match aligns with the panel’s labeling and service requirements. Installations should be performed by a qualified electrician in accordance with applicable electrical codes and the panel manufacturer’s guidelines. Remember, the part number is the most reliable reference for compatibility and future replacements.