Westinghouse EHB3020 Three-Phase Bolt-On Circuit Breaker

The Westinghouse EHB3020 Three-Phase Bolt-On Circuit Breaker is a 20A, 480VAC, 3-pole Type EHB device designed for industrial electrical distribution and three‑phase equipment protection. With bolt-on mounting and manual reset and switching capability, it provides overload and short‑circuit protection for industrial and commercial electrical systems in motor control centers, automation panels, conveyors, HVAC systems, compressors, and other power distribution equipment, supporting safe startup and reliable operation. Designed for use by maintenance electricians, OEMs, and facility engineers during electrical maintenance, retrofit projects, and replacement of obsolete bolt‑on breakers, the EHB3020's heavy‑duty construction is aimed at dependable interruption in demanding environments, across a range of three‑phase applications. Common cross references include Eaton EHB3020, Siemens HEB3B020, and Square D EJB34020, illustrating its role as a successor or upgrade path in legacy bolt‑on installations. Its 3-pole configuration and bolt‑on mounting streamline panel wiring and retrofits across industrial settings, helping keep critical equipment protected in high‑demand environments.