Westinghouse | 504C743G21 | Circuit Breaker | 160A | 3-Pole | 600V | Bolt-On

Westinghouse 504C743G21 Circuit Breaker is a bolt-on, three-pole protective device designed for demanding electrical environments. With a 160 A rating and a 600 V maximum operating voltage, this breaker is built to safeguard three-phase systems in retrofit, maintenance, and replacement projects where precise specs matter.

• Amperage: 160 A
• Poles: 3-Pole
• Voltage: 600 V
• Mounting: Bolt-On

Key benefits and use cases:

• Use when your system requires a 160 A, 3-pole, 600 V bolt-on solution. The 504C743G21 designation is the strongest reference for compatibility with Westinghouse panel families and similar bolt-on configurations.
• Maintenance and retrofits: Ideal for upgrading aging protection or replacing failed units without altering your panel’s wiring scheme.
• Reliable three-phase protection: Safeguards multi-line electrical circuits common in industrial, commercial, and large residential installations, helping prevent equipment damage from overloads or short circuits.
• Ready for challenging environments: Engineered to perform in systems where a robust, bolt-on breaker is preferred for secure mounting and stable contact reliability.

Installation and compatibility tips (based on best-practice guidance for this part):

• Verify fit and ratings before ordering: Match your panel’s specifications to ensure the 504C743G21 is the correct bolt-on, 3-pole, 600 V device for your setup.
• Use the part number as your compatibility reference: The Westinghouse 504C743G21 part number is the most reliable indicator of a proper match in retrofit and replacement scenarios.
• Plan for three-phase protection: When upgrading, ensure your distribution panels and downstream equipment are configured for three-phase operation to maximize protection coverage.
• Safety first: Disconnect power and follow standard lockout/tagout procedures during installation or replacement to maintain a safe work environment.

Who is this ideal for? Electrical contractors, facilities managers, panel builders, and system integrators who need a precise, bolt-on circuit breaker that aligns with Westinghouse specifications for 160 A, 3-pole, 600 V applications. If you’re matching a legacy panel or performing a targeted retrofit, this part—504C743G21—provides a dependable, specification-driven solution that reduces guesswork and helps you maintain reliable electrical protection across your network.