Westinghouse | 371D426G14 | Circuit Breaker | 400A | 3-Pole | 600V | Bolt-On

Westinghouse 371D426G14 circuit breaker is engineered for demanding commercial and industrial panels. This 400A, 3-pole, 600V bolt-on unit delivers dependable overcurrent protection for retrofit, maintenance, and replacement projects where exact specifications matter.

• Amperage: 400 A
• Poles: 3-Pole
• Voltage: 600 V
• Mounting: Bolt-On
• Part Number: 371D426G14

What makes this breaker stand out

Designed for secure, durable mounting, the bolt-on style of the 371D426G14 provides a robust connection that stays put in demanding environments. The 3-pole configuration supports three-phase systems common in commercial facilities and manufacturing plants, while the 600V rating covers a wide range of high-voltage applications. With a 400A rating, this unit is suited for feeders, main distribution, or service disconnects where substantial current protection is required.

Ideal use cases

• Retrofit or replace aging panels that require a 400A, 3-pole, 600V bolt-on breaker.
• Upgrade electrical infrastructure in warehouses, factories, and data centers that run three-phase loads.
• Install as a main service protection device in larger commercial installations demanding reliable overcurrent protection.

Important compatibility and buying notes

Before ordering, confirm fit and ratings against your panel’s documentation. The part number is the strongest reference for compatibility, so use 371D426G14 to verify exact match with your existing Westinghouse equipment.

Installation and safety

Because this is a high-current, high-voltage component, installation and servicing should be performed by a qualified electrician in accordance with all applicable electrical codes and the panel manufacturer’s guidelines. Ensure the panel supports bolt-on mounting and three-pole 600V devices to achieve a proper, code-compliant fit.