Westinghouse | 371D426G27 | Circuit Breaker | 400A | 2-Pole | 600V | Bolt-On

The Westinghouse 371D426G27 circuit breaker is built for durability in demanding electrical environments. This bolt-on, 2-pole unit delivers a robust 400A rating within a 600V system, making it a reliable choice for maintenance, retrofit, and replacement projects where exact specifications matter.

Key specifications

• Ampere rating: 400A
• Poles: 2-Pole
• Voltage: 600V
• Mounting: Bolt-On
• Part reference: 371D426G27
• Fit confirmation: Confirm fit and ratings before ordering

What makes this breaker stand out

Designed for high-current protection, the Westinghouse 371D426G27 combines a solid bolt-on mounting style with a precise 400A capacity. It’s engineered to reliably interrupt fault currents in 600V systems, helping safeguard motors, feeders, and other critical equipment in industrial and commercial panels. The bolt-on design provides a secure, vibration-resistant connection ideal for panels exposed to equipment movement or harsher operating conditions.

Ideal use cases

• Retrofit: Upgrade legacy panels to a modern, high-ampere, 2-pole solution that meets current protection needs.
• Maintenance: Replace aging or failed breakers with a compatible Westinghouse unit that matches the original specifications.
• New installations: Implement in 600V distribution setups where a 400A, bolt-on, 2-pole breaker is required.
• Industrial applications: Protect 400A feeders and heavy-load circuits in manufacturing, processing, and distribution environments.

Installation and compatibility notes

Before purchasing, verify that your panel or distribution center is designed to accept a bolt-on 2-pole breaker of 400A and 600V. The part number 371D426G27 is the most reliable reference for compatibility, so cross-check against your panel schedule and manufacturer guidelines. If you’re upgrading or replacing a similar Westinghouse model, this unit provides a straightforward, drop-in replacement that aligns with existing wiring and bus bar configurations.

With the Westinghouse 371D426G27, you gain a dependable, high-capacity protection solution tailored for demanding electrical systems. It’s a practical choice for professionals seeking a precise, compatible, and secure circuit-breaking option for 600V circuits.