The Schneider Electric Compact NSX160F 4P 100A is a 4-pole (3-phase + neutral), 100A, fixed-type molded case circuit breaker from the premium Compact NSX series. Designed for robust protection in three-phase four-wire systems, it provides complete overload and short-circuit protection for all live conductors, making it ideal for main distribution and critical feeder applications in commercial and industrial installations where neutral protection and full circuit isolation are required.