Schneider Electric FA320151021 Circuit Breaker

Square D by Schneider Electric FA320151021 is a three‑pole molded‑case circuit breaker rated for 240 V and 15 A, designed to protect three‑phase distribution circuits in commercial and light‑industrial panels. This FA‑series unit is supplied as a “with shunt trip” variant, enabling remote disconnection via an electrical signal for safety interlocks, emergency shutdowns, or machine‑control interfaces. It uses a thermal‑magnetic trip mechanism to respond to overloads and short circuits, helping prevent conductor damage and equipment failure while mitigating nuisance trips during normal startup surges. The three‑pole configuration provides simultaneous protection across all phases, improving fault handling in 3‑phase systems, and the shunt‑trip capability supports integration with safety systems such as access interlocks, fire alarm panels, and automated control networks that require immediate power cut across the protected circuit. As part of Schneider Electric’s Square D family, the FA320151021 is positioned for use in protected panel installations where compact 240 V protection with remote trip is required for motors, pumps, fans, compressors, and other 3‑phase equipment, and it is commonly sourced through authorized distributors and service providers that carry FA‑series molded‑case breakers and compatible replacement parts.