Westinghouse / Cutler-Hammer JB3125 Circuit Breaker provides three-pole, 125 Amp protection for 3-phase power systems, delivering thermal-magnetic overcurrent and short-circuit interruption at up to 600 V AC in commercial and industrial electrical distribution equipment. It is commonly installed in panelboards, switchgear assemblies, motor control centers, and industrial electrical panels for branch circuit and equipment protection in commercial and industrial environments. Common replacements include Eaton JB3125, Cutler-Hammer JB3125, and Square D KA36125.
