Phases 1/3 = 1, max. input current (Amp) = 2 x 15. Solar inverter for single-phase grid feed-in, Pac,r/Sac, max. 4.0 kW/ 4.0 kVA, transformerless, SMA Smart Connected, SMA ShadeFix, integrated web server with Smart Inverter Screen and installation assistant, integrated RS-485 communication interface, WLAN and Ethernet, SMA Modbus and SunSpec protocol, DC connection SUNCLIX, DC disconnect switch, 2 independent MPP trackers, parallel connection of the MPP trackers, documentation in all European languages.