Square D FHL-36040 Circuit Breaker 40A 3P 600V Type FAL

Square D FHL-36040 is a 40 A, 3-pole molded-case circuit breaker from Schneider Electric’s Square D FH family, rated for 600 V AC. It provides thermal-magnetic protection for three-phase circuits, combining a thermal overload element with an instantaneous magnetic trip to guard feeders, motors, and other equipment from overloads and short circuits. The device carries an 18 kA interrupting rating at 600 V AC, enabling it to safely interrupt fault currents in typical industrial power distribution, even with large fault currents. Its molded-case construction supports rugged, long-life service in electrical panels and distribution gear, and the 3-pole configuration suits 3-phase feeders and machine circuits. The 40 A rating per pole makes it suitable for branch circuit protection or as a feeder breaker in moderate-duty industrial installations, including motor drives and process lines that require reliable trip coordination within the FH family. As with other FH breakers, installation should follow applicable panel manufacturer instructions and national electrical code requirements; verify panel compatibility and trip characteristics for your exact application.