Schneider Electric FA34020 U Three Phase Circuit Breaker

Schneider Electric FA34020 U is a three-pole molded‑case circuit breaker from the Square D FA family, rated 20 A at 480 V AC and designed for I‑Line plug‑in panelboards. It uses a thermal‑magnetic trip to provide overload and short‑circuit protection for 3‑phase circuits, with ABC phase connections for standard 3P wiring. The FA34020 U delivers 18 kA interrupting capacity at 480 V, making it suitable for feeders and motor circuits in environments with 480 VAC three‑phase power. As part of the FA series and Square D’s I‑Line lineup, it supports quick replacement in compatible panelboards and is commonly used to protect motors, pumps, conveyors, and other industrial loads up to 20 A in 480 V systems.