Westinghouse | 456D988G03 | Circuit Breaker | 90A | 2-Pole | 600V

The Westinghouse 456D988G03 Circuit Breaker is a dependable, field-ready safeguard built for maintenance, retrofit, and replacement tasks where exact specifications matter. With a 90A rating, 2-pole design, and a 600V operating capability, this breaker is engineered to protect electrical feeders and circuits in demanding environments while maintaining reliable performance over time.

Key specifications at a glance

• Amperage: 90A
• Poles: 2-Pole
• Voltage rating: 600V
• Part number: 456D988G03
• Application: Circuit protection for residential, commercial, or light industrial panels where a matching Westinghouse replacement is required

What makes this breaker stand out

• Exact-match replacement: Designed to slot into equipment that specifies the 456D988G03 part, ensuring proper fit, trip characteristics, and labeling continuity.
• Two-pole safety: Simultaneous interruption of both live conductors supports safer handling of 240V circuits and shared-neutral configurations.
• High-voltage capability: Rated for systems up to 600V, broadening its applicability beyond standard low-voltage panels.
• Reliability in retrofit and maintenance: A reliable option for bringing aging panels back to spec or upgrading existing protection without overhauling the entire electrical setup.

Ideal use cases

• Replacing a failed or outdated breaker in Westinghouse panels that specify the 456D988G03 part
• Retrofits where a 90A, 2-pole, 600V protector is needed to support new loads or equipment upgrades
• Maintenance projects that require exact compatibility to preserve panel labeling and protection characteristics

How it protects your system

As a circuit breaker, this device interrupts fault currents to prevent damage to wiring, components, and downstream equipment. The 90A rating sets the threshold for overload protection, while the 2-pole design ensures coordinated disconnection, reducing the risk of dangerous open-circuit conditions on multi-wire circuits. Using an exact-match part simplifies documentation, warranty considerations, and ongoing service routines.

Installation and compatibility notes

• Verify fit first: The best reference for compatibility is the part number, 456D988G03. Confirm both the panel model and the required voltage and amperage before ordering.
• Qualified installation recommended: Handle power safely, de-energize equipment, and follow all local electrical codes. If in doubt, consult a licensed electrician.
• Seat and secure: Ensure proper seating in the enclosure and secure connections to maintain reliable tripping performance.

With the Westinghouse 456D988G03 Circuit Breaker, you’re choosing a proven replacement part that aligns with your panel’s specifications and your project’s safety requirements. It’s the practical, specification-driven choice for professionals who demand accuracy, reliability, and straightforward retrofits—without guessing or improvising.