Schneider Electric FA34020 I-Line Circuit Breaker

Schneider Electric FA34020 is a 3-pole, 20-amp I-Line molded-case circuit breaker (MCCB) in the FA family, rated for 480V AC and designed for plug-in mounting in Schneider Electric's I-Line panel infrastructure. This Type FA device delivers thermal-magnetic protection with an 18 kA interrupting rating at 480V and is 80% rated for continuous loads, making it suitable for protecting three-phase feeders and equipment in commercial and light industrial installations. The FA34020 uses I-Line style plug-in mounting and supports standard copper or aluminum conductors within the manufacturer's specified ranges (e.g., copper 14 AWG to 1/0 AWG, aluminum 12 AWG to 1/0 AWG per typical FA34020 listings). As part of Schneider Electric's Square D lineage, it is commonly used to guard motors, compressors, and other three-phase loads in panelboards that employ FA/I-Line bus systems, where compact MCCB protection with precise current rating and fast, reliable trip curves is essential. The unit is rated for 480V operation and 20A, 3P, with a standard interruption rating suitable for industrial distribution, and is intended for installations requiring a compact, plug-in MCCB with thermal-magnetic protection in an I-Line configuration.