Westinghouse | 371D426G16 | Circuit Breaker | 400A | 3-Pole | 600V | Bolt-On

Meet the Westinghouse 371D426G16 circuit breaker — a rugged, high-capacity protection device designed for demanding electrical systems. With a 400A rating, 3-pole configuration, and a 600V capacity, this bolt-on unit is built to handle heavy loads, retrofit projects, and reliable replacement in service panels that require exact specifications.

• Amperage: 400 A
• Poles: 3-Pole
• Voltage: 600 V
• Mounting: Bolt-On for secure, durable installation
• Part reference: 371D426G16 — the clearest guide for compatibility

Why this breaker is the right choice for your project

Designed for maintenance, retrofit, and replacement, the Westinghouse 371D426G16 delivers dependable protection when you need it most. Its bolt-on design provides solid electrical contact and mechanical stability in high-demand environments, reducing the risk of loosening under vibration or impact. If your equipment or panel requires a direct-fit, high-current solution, this unit offers a proven path to restore protection without compromising system performance.

Ideal use cases

• Upgrading service capacity in commercial or industrial panels that require a 400A, 3-pole, 600V bolt-on breaker
• Retrofit projects where existing equipment calls for exact specifications to maintain code compliance and panel labeling
• Replacement of failed breakers in aging electrical infrastructure to minimize downtime and maintain safety margins

How this unit stands apart

What sets the Westinghouse 371D426G16 apart is the combination of robust build quality and precise compatibility. Rather than a generic substitute, this breaker is specifically referenced by its part number, ensuring a reliable match for panels and bus configurations engineered for bolt-on protection. The result is predictable trip performance, stable electrical aсtuation, and long-term durability in environments where reliability matters most.

Compatibility and installation guidance

• Before ordering, confirm fit and ratings against your panel’s labeling and service manuals.
• Use the 371D426G16 part number as the primary reference for compatibility with your equipment.
• Ensure power is fully isolated during any replacement or retrofit and follow all applicable electrical codes and safety practices.

If you’re upgrading or replacing a high-load protection device, the Westinghouse 371D426G16 bolt-on circuit breaker offers a dependable, spec-aligned solution that helps you maintain system integrity, meet safety standards, and keep critical operations running smoothly.