B340EGHH

The B340EGHH is a 3-pole ground-fault equipment protection circuit breaker from Siemens, engineered for commercial and industrial branch-circuit applications requiring both overcurrent protection and equipment-level ground-fault protection. Rated for 40 at 120, this bolt-on breaker combines conventional circuit protection with sensitive ground-fault monitoring to help protect connected equipment from damaging line-to-ground fault conditions. Electrically, the B340EGHH provides 30 mA ground-fault equipment protection and is designed to de-energize all ungrounded conductors when a qualifying ground-fault condition is detected. It carries an interrupting capacity of , providing high short-circuit interrupting performance for compatible Siemens distribution systems with elevated available fault current. Its combination of overcurrent protection and UL 1053 equipment-level ground-fault protection makes the B340EGHH well suited for HVAC equipment, heating systems, industrial machinery, and other branch circuits requiring enhanced equipment protection. Mechanically, the B340EGHH uses a bolt-on mounting configuration for secure installation in compatible Siemens panelboard and distribution equipment. Its 3-pole construction supports 120 applications while providing simultaneous disconnection of all protected ungrounded conductors during qualifying overcurrent or ground-fault events. Siemens specifies load-end terminals for this amperage range accepting #14–#6 AWG copper or #12–#6 AWG aluminum conductors using 60/75°C wire, supporting reliable field termination in commercial and industrial installations. Purchase the B340EGHH at Electrical.com, your reliable partner for industrial and commercial electrical products. Our selection includes trusted circuit breakers, ground-fault protection devices, and power distribution components from manufacturers like Siemens, Eaton, Cutler-Hammer, and Schneider Electric, backed by a knowledgeable sales team ready to assist with technical questions, product selection, and support.