Square D FA34020 I-Line Circuit Breaker 3P 480V 20A

Square D FA34020 I-Line Molded Case Circuit Breaker is a 3-pole, 480 V AC-rated protective device with a 20 A rating designed for use in Square D I-Line panelboards. Part of the FA frame family from Square D (Schneider Electric), it employs a thermal-magnetic trip unit for dependable overload and short-circuit protection on 3-phase loads. The FA34020 features ABC (A-B-C) phase connection and I-Line plug-on mounting, simplifying installation in compatible I-Line distributions. It provides an interrupting rating of 18 kA at 480 VAC, with catalog data for FA-type devices often noting 25 kA at 240 VAC and 14 kA at 600 VAC, reflecting its versatile performance across voltages. This breaker is well-suited for feeders or branch circuits in commercial or industrial settings that run on 480V three-phase power and require reliable protection for motors, pumps, conveyors, and other heavy-load equipment. As part of Square D’s molded-case lineup, the FA34020 is designed for compact installation with standardized mounting and terminal arrangements typical of FA-series breakers, enabling straightforward substitution in existing FA I-Line installations without adapters.