Schneider Electric FC340451021 Trip Unit NSB is a replacement trip unit designed for NSB-series circuit breakers in the Schneider Electric (Square D) NSB family. It provides the protective function required for overcurrent protection within the NSB frame, enabling correct tripping and reset when installed in a compatible NSB breaker. Designed for installation by qualified electrical professionals, this trip unit integrates with Schneider Electric NSB breakers to maintain proper safety and protection performance in electrical distribution applications.
