Square D FA34100 I Line 3 Pole Circuit Breaker

Square D FA34100 is a 3‑pole molded‑case circuit breaker from Schneider Electric’s Square D FA family, designed for 480 V three‑phase distribution and rated at 100 A. It uses I‑Line plug‑on mounting for quick, panel‑friendly installation and relies on a thermal‑magnetic trip mechanism to protect feeders and motors from overloads and short circuits. This model provides an 18 kA interrupting rating at 480 VAC, suitable for common industrial fault currents, and is specified for operation in ambient conditions up to 40°C. The FA34100 is a 3P, 100A device with line terminals configured for I‑Line connections and load terminals on the opposite side, making it compatible with standard FA‑series panels and accessories. It is well suited for use in industrial control panels, distribution boards, and equipment feeders that require reliable, three‑phase protection in 480 V systems. With its robust thermal‑magnetic operation and plug‑on mounting, FA34100 offers a straightforward, drop‑in solution for 100 A, 3P protection in 480 V installations.