Westinghouse GHB3040 Molded Case Circuit Breaker

The Westinghouse / Eaton GHB3040 is a 40 Amp, 277/480V, three-pole bolt-on molded case circuit breaker designed for industrial electrical distribution and branch circuit protection. It belongs to the GHB series and employs thermal-magnetic overcurrent protection to interrupt faults in three-phase systems, with bolt-on mounting for installation in panelboards, switchgear, MCCs, and other industrial control panels. Suitable for power distribution and motor control in HVAC infrastructure, conveyors, and automation applications, it supports 50/60 Hz operation and provides reliable protection for connected equipment on 277/480V networks. Key specifications include Part Number GHB3040; Current Rating 40 Amp; Voltage Rating 277/480 Volt; Number of Poles 3; Phase Compatibility 3 Phase; Mounting Type Bolt-On; Protection Type Thermal Magnetic; Function Overcurrent and short-circuit protection; Common Replacements: Eaton GHB3040, Siemens HGB3040, Square D EDB34040.