Schneider Electric FA14100A2100 Circuit Breaker

Schneider Electric's Square D FA14100A2100 is a 100 A, 1‑pole molded‑case circuit breaker from the FA I‑Line family, designed for 480Y/277 VAC service and providing thermal‑magnetic protection. It supports a line‑side I‑Line connection and load‑side lugs, with compatible conductors in 14–1/0 AWG aluminum or copper. It carries an 18 kA interrupting rating at 480Y/277 VAC (and 25 kA at 120/240 VAC), making it suitable for protecting feeders and branch circuits in commercial or light industrial power distributions that operate on high‑voltage single‑phase layouts. This FA series unit is commonly used in Schneider Electric panelboards that accept FA I‑Line MCCBs, delivering reliable protection for critical equipment on 480Y/277 VAC distribution networks.