Westinghouse | HLB3400F | Circuit Breaker | 400A | 3-Pole | 600V

Westinghouse HLB3400F Circuit Breaker is a robust 3-pole protection device designed for three‑phase systems up to 600V, with a 400A rating. Built for maintenance, retrofit, and replacement projects where exact specifications matter, this breaker helps you keep critical equipment protected and downtime to a minimum. The part number HLB3400F is the most reliable reference for compatibility, so be sure to confirm fit and ratings before ordering.

Key specifications

• Amperage: 400A
• Poles: 3-Pole
• Voltage rating: 600V
• Reference: HLB3400F for precise compatibility

What makes this breaker unique

This breaker is designed to integrate seamlessly with Westinghouse-compatible panels and switchgear that require a 400A, 3-pole, 600V protection device. It delivers reliable overcurrent protection for demanding commercial and light-industrial environments, reducing the risk of cascading faults and safeguarding your equipment. By matching the exact part number, you minimize installation guesswork and ensure a dependable, one-for-one replacement when servicing existing systems.

Ideal use cases

• Maintenance and service life extension for three-phase electrical systems up to 600V
• Retrofit projects where the panel specification calls for HLB-series breakers
• Replacement of a failed or worn-out breaker in commercial buildings, manufacturing facilities, or data/IT rooms with three-phase loads

Installation and compatibility tips

Before ordering, verify that your panel or switchgear accepts an HLB-series, 3-pole, 400A, 600V device and that the bus arrangement matches. Keep a spare HLB3400F on hand for planned maintenance to minimize downtime. For safe installation, follow the panel manufacturer’s torque specifications and ensure the device seats properly to maintain reliable tripping performance.

If your project requires precise, dependable three-phase protection at 600V with a clear upgrade path or replacement option, the Westinghouse HLB3400F delivers the exact specifications and compatibility you need—minimizing compatibility risks and simplifying maintenance planning.