Microcontroller based.
Parameter setting by knobs
With “Priority” phase
Overvoltage and undervoltage
LED indication for control state
Din-rail mounting
Auto phase switch is designed to supply industrial and household appliance single-phase 220V/50Hz loads from three-phase four-wire mains 3x380+N with the purpose of maintaining uninterrupted power supply of essential single-phase loads and protect them against unallowable voltage fluctuation in the mains.

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Next:MS-MV11/12/13