Westinghouse | NBY31200SF | Circuit Breaker | 1200A | 3-Pole | 240V | Bolt-On

Meet the Westinghouse NBY31200SF Circuit Breaker—a rugged, bolt-on three-pole protection device built for demanding 240V, three-phase systems. With a substantial 1200A rating, this breaker is engineered to safeguard large electrical circuits during demanding industrial and commercial operations. It’s the ideal choice for maintenance, retrofit, and replacement projects where exact specifications are non-negotiable.

• Part number: NBY31200SF
• Amperage: 1200A
• Poles: 3-Pole
• Voltage: 240V
• Mounting: Bolt-On
• Design purpose: maintenance, retrofit, and replacement in compatible Westinghouse systems

Why this Westinghouse breaker stands out

• Secure, field-friendly bolt-on mounting for reliable installation in compatible panels.
• 3-pole configuration provides coordinated protection across all phases in a 240V three-phase setup.
• High-current capability (1200A) supports heavy-load feeders and motor circuits without compromising safety.
• Clear reference point for compatibility—use the part number NBY31200SF to confirm fit with your panel and surrounding equipment.

Ideal use cases

• Retrofits and replacements in commercial or industrial panels that require a 1200A, 3-pole, 240V bolt-on breaker.
• Upgrading legacy systems to a robust, standard-compatible protection device with straightforward installation.
• Protection of large motors, compressors, and other high-current equipment on 240V service feeds.

Practical guidance for ordering and installation

• Notes: Confirm fit and ratings before ordering. The part number is the best reference for compatibility.
• Before install, verify that your panel accepts bolt-on breakers of this type and that the overall system rating aligns with a 1200A, 240V, 3-pole configuration.
• Follow standard electrical safety procedures, ensure the circuit is de-energized, and consult your panel’s installation manual for torque and mounting guidelines.