Westinghouse GHB3030 Molded Case Circuit Breaker

The Westinghouse GHB3030 Molded Case Circuit Breaker is a 30 Amp, 3‑pole unit designed for 240/480 VAC three‑phase systems, delivering reliable overcurrent and short‑circuit protection in industrial electrical distributions. This molded‑case breaker is commonly installed in switchboards, panelboards, motor control centers, and automation equipment that require medium‑ampere, three‑phase protection, making it suitable for motor control systems, HVAC infrastructure, conveyors, industrial processing machinery, and other automation applications operating on 240/480 VAC. With thermal‑magnetic protection and a 50/60 Hz rating, it supports panel or switchboard mounting across power distribution panels and MCCs. The part number is GHB3030 from the GHB series, and it is marketed by Westinghouse; common replacements include Eaton GHB3030, Siemens HGB3030, and Square D EDB34030. Note that this unit is documented as missing lug screws, a condition to address during replacement or installation. This device is intended for power distribution and motor control systems in industrial or commercial facilities that require dependable three‑phase protection for branch circuits and connected equipment operating at 240/480 VAC.