Westinghouse | EHD1090 | Circuit Breaker | 90A | 1-Pole | 277V

Westinghouse EHD1090 is a 90A, 1-Pole, 277V circuit breaker designed for maintenance, retrofit, and replacement projects where exact specs matter. The part number EHD1090 is your best reference for compatibility and proper fit.

Overview

Engineered for single-pole protection, this Westinghouse breaker provides dependable overcurrent protection for 277V circuits. It delivers consistent trip characteristics and reliable performance in panels that specify the EHD1090 family, making it a trusted choice for service and upgrade scenarios.

Key specifications

• Amperage: 90A
• Poles: 1-Pole
• Voltage: 277V
• Part number: EHD1090

Ideal use cases

Choose this breaker when you need a precise 90-amp, single-pole device for 277V circuits—common in commercial lighting, power distribution, and other applications where single-pole protection is required. It’s a practical solution for:

• Maintenance on existing panels that specify the EHD1090
• Retrofits to restore original protection profiles
• Replacement to maintain safe, code-compliant operation

Compatibility and verification

Important: Confirm fit and ratings before ordering. The part number EHD1090 is your best reference for compatibility with your panel or distribution board. When verifying, ensure:

• The panel accepts a 1-Pole, 90A, 277V device
• The mounting style and terminal connections match your enclosure

Practical guidance

• Keep a spare EHD1090 on hand to minimize downtime during planned maintenance.
• Before replacement, power down and isolate the main breaker to safely handle internal components.
• Document the replacement with the exact part number to simplify future service and warranty considerations.