Schneider Electric NSB FH36045 Molded Case Circuit Breaker

The Schneider Electric Square D FH36045 is a 3-pole molded case circuit breaker (MCCB) rated for 600 V and 45 A, belonging to the FH family and intended for I-Line plug-on installation in industrial power-distribution panels. Its thermal-magnetic trip unit provides overload and short‑circuit protection, with a short-circuit interrupting capacity of up to 18 kA at 600 V and 25 kA at 480 V (higher ratings at lower voltages) per typical FH specifications, and it accommodates 14–1/0 AWG aluminum or copper conductors on the load side. The device features a line-side I-Line connection, ABC phase configuration, and load-side lugs, making it suitable for 3-phase distribution in commercial or industrial equipment. It is designed for 80% rated operation and is sized for plug-on installation in FH frame panels, with a 3-pole configuration and 45 A nominal current rating. Typical applications include motor control circuits, machine panels, and power-distribution enclosures where reliable, bolted, plug-on protection is required.