Westinghouse | 371D426G37 | Circuit Breaker | 400A | 3-Pole | 600V | Bolt-On

Westinghouse 371D426G37 circuit breaker delivers reliable protection for power systems that demand a durable, high-current solution. Designed for maintenance, retrofit, and replacement projects, this 400A, 3-pole unit is built to handle demanding loads at up to 600V with a bolt-on mounting for secure, industrial-grade installation.

• Amperage: 400A
• Poles: 3-Pole
• Voltage rating: 600V
• Mounting: Bolt-On
• Part reference: 371D426G37 (best compatibility reference)

Why this matters: In systems that require a robust 3-phase protective device, a 400A breakpoint is essential for guarding feeders and main conductors from overloads. The bolt-on design provides a rigid, vibration-resistant connection ideal for panel assemblies in commercial and industrial environments where uptime matters.

Ideal use cases:

• Retrofits where existing breakers match the 371D426G37 specification, preventing compatibility issues during modernization projects.
• Emergency replacements in service entrances or main distribution panels that operate at 600V and require a 3-pole configuration.
• Maintenance cycles that demand a dependable, high-current protective device with straightforward installation.

Compatibility and installation tips:

• Always confirm fit and ratings before ordering. The part number 371D426G37 is the most reliable reference for compatibility with your panel or switchgear.
• Ensure your panel supports bolt-on mounting and 600V systems, and that the bus stabs and lugs align with the unit’s terminals.
• Handle with standard electrical safety procedures, disconnect power before service, and follow local electrical codes during replacement.

With Westinghouse, you’re choosing a legacy of reliability in protective devices designed to minimize downtime and maximize system safety. This circuit breaker is a precise match for projects that specify the 371D426G37 part, delivering consistent performance when you need it most.