Westinghouse 400Q - Circuit Breaker

Introducing the Westinghouse 400Q circuit breaker — a rugged, dependable solution for protecting your electrical system from overcurrent conditions. When uptime and safety are non-negotiable, the 400Q stands up to the challenge with proven Westinghouse engineering behind every trip.

This breaker is designed for seamless integration in panelboards, switchboards, control panels, and OEM equipment. Its robust construction and straightforward installation make it a reliable choice for demanding environments where consistent performance and safe operation are critical in distribution panels and motor control centers.

Why the Westinghouse 400Q stands out

• Reliable overcurrent protection that helps prevent damage to wiring and equipment in industrial, commercial, and OEM applications.
• Versatile compatibility with panelboards, switchboards, control panels, and OEM machinery, enabling flexible system designs.
• Designed for safe operation in demanding electrical systems, reducing downtime and simplifying maintenance in distribution and motor control centers.
• Durable construction engineered to withstand the rigors of busy facilities and long service life in critical protection roles.

Ideal for professionals building or upgrading electrical distributions where dependable protection is essential. The Westinghouse 400Q supports a wide range of industrial and commercial setups, delivering consistent performance in both new installations and retrofit projects that require solid, field-proven circuit protection.

Practical considerations for use

• Verify compatibility with your panel or enclosure to ensure coordinated protection and proper mounting.
• Pair the 400Q with appropriate upstream protection strategies to optimize fault clearance and system reliability.
• Plan for easy maintenance and fault diagnosis by placing the breaker in accessible locations within distribution panels or motor control centers.