ASZ-411 segment standby power from the cast device disconnected in the work of a power failure or other reasons, automatically disconnect the working power the segment circuit breaker closed, the completion of the backup power supply auto function. Main functions: a) backup power automatically put into function; b) composite voltage start over-current protection; c) charging protection function; d) The overload protection function; e) PT wire-break monitoring function; f) event logging, fault recording ; g) CAN data communication functions.