Westinghouse | RE1090L | Circuit Breaker | 90A | 1-Pole | 277V

Power up reliable protection with the Westinghouse RE1090L Circuit Breaker. This 90A, 1-Pole device is engineered to safeguard 277V electrical circuits, making it a dependable choice for commercial and industrial panels where precise specs matter.

Designed for maintenance, retrofit, and replacement projects, the RE1090L ensures you can restore circuit protection without compromising panel compatibility. Use this breaker when your upgrade or service requires an exact Westinghouse part number reference.

Key specifications

• Amperage: 90A
• Poles: 1-Pole
• Voltage: 277V
• Part number: RE1090L

Important compatibility note: Confirm fit and ratings before ordering. The part number RE1090L is the best reference to ensure a correct match with your panel and existing protections.

Why this Westinghouse RE1090L stands out

Unlike generic substitutes, this breaker is purpose-built for Westinghouse systems, providing reliable single-pole protection for 277V circuits. Its exact amperage and voltage ratings help prevent nuisance trips and ensure consistent performance in daily operations.

Ideal use cases

• Maintenance in commercial spaces that rely on 277V lighting or equipment
• Retrofit projects where existing panels require a 90A, 1-Pole, 277V breaker
• Replacement after a failure in a Westinghouse-compatible panel with matching spec
• Spare part for service technicians managing multiple locations with Westinghouse panels

Installation and safety tips

• Power down the circuit and follow proper lockout/tagout procedures before replacement
• Verify panel labeling and catalog references to confirm 1-Pole, 90A, 277V compatibility
• Handle with care to avoid damage to the breaker mechanism and terminals
• If in doubt, consult your panel's documentation to ensure the RE1090L is listed for use in your specific model