Square D FA34020 I-Line 3-Pole Circuit Breaker

The Square D FA34020 I-Line 3-Pole Molded Case Circuit Breaker is a 20-amp, 480-volt protective device intended for three‑phase circuits in Square D I‑Line panels. As part of the FA family from Square D (Schneider Electric), it uses a thermal‑magnetic trip mechanism and a non‑interchangeable trip unit, delivering reliable overcurrent protection for feeders and branch circuits in industrial or commercial panel assemblies. The breaker features an I‑Line plug‑on mounting pattern for fast, secure installation and a molded‑case construction that resists impact and wear in demanding environments; it is UL-listed for use in standard electrical installations. Rated for 480 VAC three‑phase service, the FA34020 carries an interrupting rating of 18 kA at 480 VAC, making it suitable for equipment protections in panels where higher fault currents may be encountered. This 3‑pole device is commonly deployed in control panels, machine wiring, and panelboards requiring robust 3‑phase protection with a compact Square D FA frame footprint.