Square D FH36020 I-Line Circuit Breaker Type FA

FH36020 is Square D’s 3-pole I-Line molded‑case circuit breaker from the PowerPact FH family, providing 20 A protection for 3‑phase circuits in I‑Line panelboards. It is designed for up to 600 VAC operation and uses a thermal‑magnetic trip mechanism to respond to overloads and short circuits, delivering reliable protection in industrial and commercial distributions. The unit features I‑Line plug‑in mounting for quick installation or replacement in compatible panels and carries a 40°C ambient rating. For fault‑current interruption, it offers up to 25 kA at 480 VAC and 18 kA at 600 VAC, giving a solid margin for typical feeders and equipment circuits. This 20 A, 3‑pole breaker is UL listed and commonly applied to feeder circuits, motor control feeds, and other protected loads within commercial and light industrial electrical systems that require a compact, dependable protection device.