Eaton / Westinghouse EH1040 – 40A 1 Pole Molded Case Circuit Breaker Top Pick

Manufactured to support aging infrastructure, this single-pole 40-amp thermal-magnetic breaker handles commercial electrical loads. It mounts into standard Eaton and Westinghouse NEHB panelboards, maintaining the original bolt-on configuration. Facility managers can utilize this component to replace hard-to-find EHB1040 or EHD1040 units without modifying the enclosure. Rated for 14kA interrupting capacity at 277VAC, the HACR-rated device accommodates 14 to 1/0 AWG aluminum or copper wiring.