Schneider Electric FA14020B Molded Case Circuit Breaker

Schneider Electric FA14020B is a 1-pole molded‑case circuit breaker from the FA I‑Line family, rated for 20 A at 480Y/277 VAC. This thermal‑magnetic device uses I‑Line plug‑in mounting for FA‑Series panels, with a line‑side I‑Line connection and load‑side lugs for 14‑4 AWG aluminum or copper conductors. The FA14020B is configured for a B‑phase connection and delivers an 18 kA interrupting capacity at 480Y/277 VAC, with an 80% continuous‑load rating. It protects a single 20‑amp circuit in commercial electrical distributions that use 480Y/277 VAC systems, such as lighting runs or other feeders. As part of Schneider Electric’s FA family, it relies on a thermal‑magnetic trip mechanism to respond to overloads and short circuits, and it is designed for quick replacement within I‑Line panels.