The Square D FA24040AC is a two‑pole molded‑case circuit breaker from the FA I‑Line family, rated for 40 A at 480 V AC. This thermal‑magnetic device provides overcurrent protection with an 18 kA interrupting rating at 480 V and uses line‑side I‑Line connections with load‑side lugs that accept 14–1/0 AWG aluminum or copper conductors. Designed for plug‑in installation in I‑Line panels, it is well suited for protecting feeders and motor circuits in 480 V industrial and commercial power distribution applications.
