ABB string protection MCB S800PV-S and the switch disconnector S800PV-M can be remotely operated with the S800-RSU unit. S800-RSU simplifies the control of commercial PV systems. Driven by a Swiss made brushless high precision DC motor, the remote switching units provide fastest switching performance at lowest power consumption. Wiring and operation is easy: RSU can be operated with standard MDRC pushbuttons or via programmable logic controllers (PLCs). Main benefits include S800-RSU enables PV strings to be remotely controlled; Compatible to ABB pro M compact 9 mm pushbuttons and indicator lights & Compatible to ABB Programmable Logic Controllers. Main Features include User safety due to hand switching recognition; Low power consumption; Low stand-by current & Provides safety intelligence to your installation.