Square D FA34100AK Circuit Breaker

The Square D FA34100AK is a three‑pole molded‑case circuit breaker from Schneider Electric’s Square D FA family, rated for 480V AC and 100A. Built for 3‑phase protection, this FA‑series MCCB fits FA‑frame panels and is used to safeguard feeders and large branch circuits in commercial and light‑industrial distributions. In typical installations it serves to interrupt all three phases on fault conditions and to coordinate with other protective devices within a power distribution system. Key specifications include a maximum voltage rating of 480V AC, a 100A current rating, and a 3‑pole configuration, making it suitable for protecting 3‑phase loads such as motors, compressors, and multi‑circuit feeders in appropriate panel enclosures. The FA34100 variant designation appears in Schneider Electric’s FA catalog listings for 480V, 100A, 3‑pole devices; confirm with your supplier that this exact suffix (AK) matches regional labeling or catalog numbering. Installers should refer to Schneider Electric's instructions for FA MCCB installation, torque values, wiring allowances, and trip characteristics to ensure proper rating and safe operation.