WESTINGHOUSE FB3125 AB DE-ION Circuit Breaker

FB3125 AB De-Ion Circuit Breaker is a 125 Amp, 3-pole molded-case circuit breaker designed for three-phase overcurrent protection in industrial power distribution and motor control systems. Brand Westinghouse, this FB Frame molded-case circuit breaker features AB De-Ion Arc Suppression and thermal-magnetic protection for branch circuits and equipment. It is panel- or switchboard-mounted and is commonly used in motor control centers, switchgear, and industrial control panels, as well as conveyor equipment, HVAC infrastructure, automation machinery, and industrial processing systems operating in demanding environments. With a 50/60 Hz frequency rating and three-phase compatibility, the unit provides reliable overcurrent and short-circuit protection across high-amperage installations. Common replacements include Eaton FB3125, Siemens HFB3125, and Square D FA34125, offering compatible options for upgrading or maintaining existing industrial electrical infrastructure.