Westinghouse EHB3040 Bolt-On Circuit Breaker

The Westinghouse EHB3040 Bolt-On Circuit Breaker provides dependable overload and short-circuit protection for 3‑phase industrial power systems at 480 VAC, combining a 40 A current rating with a 3‑pole Type EHB design. Designed for bolt‑on mounting, this unit backs up motor control centers, distribution panels, and heavy‑duty equipment in manufacturing facilities, HVAC systems, conveyors, and processing machinery that require reliable high‑voltage protection. It offers manual reset and switching capability for clear branch circuit and equipment protection in industrial and commercial electrical systems and is commonly used as a retrofit or replacement in bolt-on installations; common replacements include Square D EJB34040.