NH40SZ Automatic Changeover Switch Disconnector
NH40SZ automatic changeover switch disconnector integrates electrical and mechanical interlocking systems to guarantee safe transfer operation.It is applicable for the three-phase four-wire power supply system of AC 50Hz, rated voltage AC 380V and below, DC 440V and below, rated current up to 3200A.
It can realize automatic and manual changeover between normal and back up power supply power, and stop power supplying to load when changeover process of power supply is carried out.
The switch is applicable for two circuits power supply and in the condition which requires high quality power supply.
Standard: IEC/EN 60947-3, 60947-6-1