Schneider Electric FA34050 I-Line Circuit Breaker

The FA34050 is a 50-amp, 3-pole molded-case circuit breaker from Square D by Schneider Electric, designed for 480 VAC three-phase power and compatible with I-Line plug-in panelboards. It provides thermal-magnetic protection with an 18 kA interrupting rating at 480 VAC, making it suitable for distribution feeders and branch circuits in commercial and light industrial applications. This FA family device uses I-Line mounting for easy replacement and retrofit in FA-series enclosures, and is offered in a 480 V, 50 A rating for standard protection of mid-sized three-phase circuits. A shunt-trip variant exists (FA340501021) for interlocking with a control circuit if a remote trip is required.