Square D FA-36020 I-Line Three-Phase Circuit Breaker

Square D FA36020 I-Line three-pole molded‑case circuit breaker delivers reliable protection for 3‑phase circuits in industrial and commercial panels. This 20 A, 3P unit is rated for 600 VAC and 250 VDC, making it suitable for mixed AC/DC applications in control panels, motor control centers, and power-distribution assemblies. The FA36020 utilizes a thermal‑magnetic trip mechanism for overload and short‑circuit protection and is designed for line‑side I‑Line mounting with ABC phase connections on the load side and standard lugs for wiring. Terminations accept 14‑4 AWG aluminum or copper conductors, with load‑side lugs provided for secure connections. It carries an 80% rated continuous operation designation and offers interrupting ratings of up to 14 kA at 600 VAC and up to 10 kA at 250 VDC, supporting mid‑range fault currents in 3‑phase systems. As part of Schneider Electric’s Square D FA line, it integrates with I‑Line bus configurations in compatible panels and equipment, serving as a compact, dependable protection solution in electrical distribution where 20 A, 3‑pole protection is required.