Schneider Electric FA22040AB BU Circuit Breaker

Schneider Electric Square D FA22040AB BU is a 2‑pole, 40A, 240V molded‑case circuit breaker from the FA/I‑Line family, engineered for plug‑in I‑Line panel installations and AB‑phase configuration. It uses a thermal‑magnetic trip to provide overload and short‑circuit protection and carries a 10 kA interrupting rating at 240V (10,000 AIC). The FA22040AB AB variant accepts #14–1/0 AWG aluminum or copper conductors on the load side and employs line‑side I‑Line connections with load‑side lugs for robust, field‑reliable installation in commercial or light industrial distributions. Typical applications include branch‑circuit protection in 240V circuits where reliable 40‑amp protection is needed in I‑Line panels.