Westinghouse | 314C640G18 | Circuit Breaker | 400A | 3-Pole | 600V

The Westinghouse 314C640G18 circuit breaker is a heavy-duty, high-current protection device designed for reliability in commercial and industrial electrical systems. With a 400A rating, 3-pole configuration, and a 600V operating range, this breaker is built to safeguard equipment and maintain continuous operation in demanding environments. It’s the practical choice for maintenance, retrofit, and replacement projects where exact specifications matter.

Key specifications

• Amperage: 400A
• Poles: 3-Pole
• Voltage: 600V
• Part number: 314C640G18
• Application: Circuit protection for three-phase systems; suitable for maintenance, retrofit, and replacement with matching specs

What sets this breaker apart

• Exact spec alignment: The 314C640G18 is a precise fit for panels and assemblies that require Westinghouse compatibility, helping you avoid unnecessary panel rewiring or adaptations.
• Focused replacement solution: Designed to slide into service where a 400A, 3-pole, 600V protection device is needed, minimizing downtime and simplifying procurement when upgrading existing infrastructure.
• Durable performance: Engineered to handle the stresses of industrial and commercial loads, delivering dependable protection during fault conditions and reducing the risk of equipment damage.

Ideal use cases

• Maintenance replacements in legacy panels that rely on Westinghouse 314C640G18 specifications
• Retrofits in facilities upgrading to higher current protections while preserving existing bus layouts and wiring pathways
• New installs that require a compliant, three-phase 400A, 600V protective device with a proven compatibility track record

Compatibility and fit verification

Before ordering, confirm that the 314C640G18 matches your system’s ratings and panel design. The part number is the most reliable reference for compatibility, so cross-check it against your equipment directory and panel labeling to ensure a seamless replacement.

Installation and safety

Due to the high current and three-phase voltage involved, installation should be performed by a qualified electrician with the panel de-energized and locked out. Follow all applicable electrical codes and manufacturer guidelines when replacing or retrofitting circuit breakers to maintain system safety and warranty integrity.

Practical tips and insights

• Keep a spare 314C640G18 on hand for planned maintenance or unexpected replacements to minimize equipment downtime.
• Label the panel directory clearly after installation to reflect the new breaker’s specifications for future service.
• Use the part number 314C640G18 as the primary reference when checking compatibility with existing Westinghouse-style distribution boards.