Square D FA36045 3Pole 45 Amp 600V ILine Circuit Breaker

Square D FA36045 is a 3-pole molded-case circuit breaker (MCCB) from the FA family, rated for 45 A at up to 600 V AC and designed for use with Square D I-Line panel bus systems in commercial and light-industrial installations. As part of the I-Line lineup, it provides thermal-magnetic overcurrent protection for three‑phase feeders and motor circuits, with a compact FA-frame design suitable for integration in appropriate Square D panels. The FA36045 catalog number denotes a 3-pole, 600 VAC‑rated device intended for distribution protection where reliable three‑phase protection is required, and it is manufactured by Square D (a Schneider Electric brand). Common applications include protecting feeders, branch circuits, and motor loads in industrial control panels and electrical distribution centers that rely on FA/I-Line breakers for fast, secure, and scalable protection. This unit is specifically selected when a 45‑amp, 3‑pole solution is needed for 600 V system voltage, delivering robust three‑phase protection in a compact form factor within FA/I‑Line installations.