Westinghouse EHB1100LK Single Pole Circuit Breaker

The Westinghouse EHB1100LK is a 100A, 277V AC single-pole circuit breaker that provides overload and short-circuit protection for industrial and high-capacity commercial branch circuits. This Type EHB device has 1 pole and is designed for branch-circuit protection in lighting panels, switchboards, automation panels, machinery electrical cabinets, and broader facility electrical infrastructure where reliable interruption of power is required. With manual reset and switching capability and heavy-duty industrial construction, it is intended for installations in lighting distribution systems, commercial power infrastructure, and automation equipment operating at 277V AC. The breaker is suitable for new installations and retrofit projects and supports applications across industrial and commercial electrical systems requiring 100A protection in 277V networks. Common replacements include Eaton EHB1100, Siemens HEB1B100, and Square D EJB14100.