Westinghouse | FB3150 | Circuit Breaker | 150A | 3-Pole | 600V

Meet the Westinghouse FB3150, a purpose-built circuit breaker designed for demanding three-phase power systems. With a 150-amp rating, a 3-pole configuration, and a 600-volt maximum, this breaker provides robust protection for commercial and industrial panels that require precise, reliable interruption during faults.

Key specifications

• Amperage: 150A
• Poles: 3-Pole
• Voltage rating: 600V
• Part reference: FB3150 — the best reference for compatibility
• Designed for: maintenance, retrofit, and replacement projects

Why this breaker stands out

• Three-pole design protects all three phases simultaneously, helping to maintain balance and safe shutdown in three-phase systems.
• Direct compatibility with Westinghouse panels and other systems that use the FB3150 specification when the part number is your match reference.
• A trusted, durable component from Westinghouse, built to endure the rigors of commercial and industrial environments.

Practical use cases

• Retrofits in aging service panels where a like-for-like replacement is required to maintain code compliance and electrical safety.
• Maintenance replacements in data centers or manufacturing floors where a 150A, 3-pole, 600V breaker fits the existing bus configuration.
• New installations that follow three-phase distribution with a 600V system and a 150A protection level for distribution branches.

Compatibility and installation notes

Before ordering, confirm fit and ratings in your exact panel. The FB3150 part number is the best reference for compatibility, ensuring the breaker aligns with your panel's bus and mounting. If your system uses three-phase 600V service and requires 150A protection, this unit is designed to provide a reliable, code-compliant solution.

Safety and maintenance tips

• Always power down the panel and follow lockout/tagout procedures before replacement.
• Inspect the breaker’s mechanical condition and bus connections during installation to ensure secure operation.
• Store replacement breakers in a clean, dry environment to prevent corrosion and ensure smooth functionality when installed.