Westinghouse EHD3020 Bolt-On Three-Phase Circuit Breaker

The Westinghouse EHD3020 Bolt-On Three-Phase Circuit Breaker is a 20 A, 480 V AC, 3-pole Type EHD device designed for industrial electrical distribution and three-phase equipment protection. With bolt-on mounting for secure installation, it is commonly used in motor control centers, industrial machinery, HVAC systems, conveyors, and commercial power distribution panels where reliable overcurrent interruption is required. This 3-pole breaker provides overload and short-circuit protection for 3-phase circuits and is built for heavy-duty industrial service. Key specifications include a 20 A current rating, 480 V AC maximum voltage, 3 poles, and manual reset and switching capability, all under the Westinghouse brand. The part number is EHD3020, and it is intended for use in branch circuits and equipment protection across industrial and commercial electrical systems, including motor branch circuits and automation panels. For retrofit or cross-brand replacements, common alternatives listed are Eaton EHD3020, Siemens HED4B020, and Square D EDB34020.