FA340401037

The FA340401037 is a 3-pole molded case circuit breaker (MCCB) from Square D, Schneider Electric' legacy FA F-frame family, engineered for commercial and industrial power-distribution applications requiring dependable overload, short-circuit, and remote-trip protection. Rated for 40 at 480, this breaker uses thermal-magnetic protection to provide reliable circuit protection for feeder, branch-circuit, and equipment applications. Electrically, the FA340401037 combines inverse-time thermal overload protection with instantaneous magnetic short-circuit response. It carries an interrupting capacity of , with the applicable fault-current rating determined by the breaker configuration and system voltage. This configuration also incorporates a 277/480 V AC shunt-trip accessory, allowing the breaker to be electrically opened from a remote control, emergency-shutdown, interlock, or equipment-protection circuit. Mechanically, the FA340401037 is constructed on Square D, Schneider Electric' compact FA F-frame molded-case platform and is designed for installation in compatible distribution, control, and OEM equipment. Its 3-pole common-trip construction provides coordinated disconnection of all protected conductors during qualifying overload, short-circuit, or shunt-trip operation. The compact F-frame design supports space-efficient integration into commercial and industrial electrical assemblies. Purchase the FA340401037 at Electrical.com, your reliable partner for industrial and commercial electrical products. Our selection includes trusted circuit breakers and power distribution components from manufacturers like Siemens, Eaton, Cutler-Hammer, and Schneider Electric, backed by a knowledgeable sales team ready to assist with technical questions, product selection, and support.