The master includes the input/output 60A, 120/240VAC bypass system along with separate 60A, 120/240VAC AC input and output breakers. This E-Panel can be used in conjunction with a Sunny Island inverter. Comes with a 250A battery disconnect breaker and inverter cables. Pre-wired with AC input and output wiring.
RS485 boards are required when AC Coupling to SunnyBoy inverters if 3 stage charging is desired. One RS485 board goes into the Sunny Island inverter and each SunnyBoy Inverter. AC Coupling to the SunnyBoy grid-tie inverter is possible without RS485 boards. The Sunny Island grid-tie inverter will frequency shift based on battery voltage to knock the grid-tie inverter off line. SunnyBoy inverters can switch between off-grid and grid-tie mode automatically when RS485 boards are used. To program this feature you must use either a SMA service cable (USBPBS) or SMA web box (SUNNYWEBBOXU).
Comes standard with one MNSPD-300. A backplate is recommended for the proper wiring alignment of the Sunny Island.