Westinghouse NP28313-F Circuit Breaker

Westinghouse NP28313-F AB Circuit Breaker is a 3-pole molded-case circuit breaker designed for industrial power distribution. It delivers 20 A of protection for three‑phase systems and is intended for use in motor control centers, manufacturing equipment, industrial machinery, and distribution panels where reliable interruption of faults is essential. The unit carries a voltage rating of 600 VAC / 250 VDC and operates at 50/60 Hz, with panel-mount installation and mechanical lug connections for secure wiring. Its protection type is thermal-magnetic, meaning it uses a combination thermal sensor and magnetic trip to respond to overloads and short circuits, supporting industrial duty rated service for continuous operation in demanding environments. The NP28313-F is suitable for branch circuits and motor protection, and is compatible with motor control centers and distribution panels, making it a common choice in industrial automation and HVAC applications. Common replacements include Eaton AB3020, Square D FA34020, and Siemens BQD320.