E-Panels Explained
6
AC conduit connections
Warranty - 5 yrs.
Listed by ETL for US & Canada
Made in the USA
MNE250SMA-3PH Master - The MNE250SMA-
3PH Master E-Panel works with two of the
MNE250SMA-Slave E-Panels to create a three
phase system. The MNE250SMA-3PH Master
includes the three phase 60amp input/output
bypass system. This E-Panel can be used in
conjunction with a Sunny Island inverter as
part of a three phase off-grid, battery backup
or AC Coupled system. Terminals are provided
for hookup to leg two and leg three E-Panels.
This unit comes with 250A remote trip battery
disconnect breaker and inverter cables. The MNE250SMA-3PH Master E-Panel is pre-wired with AC
input and output wiring for leg one (master) inverter. (Two slaves are also required for three phase.)
The three phase master includes the three phase 60amp input/output bypass system. This E-Panel
can be used in conjunction with a Sunny Island inverter as part of a three phase off-grid, battery
backup or AC Coupled system. Terminals are provided for hookup to leg two and leg three E-Panels.
Comes with 250amp battery disconnect breaker and inverter cables. This unit is pre-wired with AC
input and output wiring for leg one (master) inverter. (Two slaves are also required for three phase.)
This E-Panel does not come with a relay board, RS485 (485USPD-NR) boards or MNSPD surge
protection device. RS485 boards are required when AC Coupling to SunnyBoy inverters if three stage
charging is desired. One RS485 board goes into the master inverter and each SunnyBoy Inverter. AC
Coupling to a SunnyBoy or any other grid-tie inverter is possible without RS485 boards. The Sunny
Island 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 SMA service cable (USBPBS) or SMA web box
(SUNNYWEBBOXU).
MNE250SMA-SLAVE - The MNE250SMA-SLAVE is a companion E-
Panel for dual, triple and quad Sunny Island inverter systems. The
Slave E-Panel is the same part number for all multiple SMA E-Panel
systems regardless of off-grid, AC coupled, battery backup, three
phase or quad.
Separate 60amp, 120/240vac AC input and output
breakers for the slave inverter
250amp remote trip battery breaker with inverter cables
500amp/50mV shunt (MNSHUNT)
Battery negative busbar
AC input and Output busbars
Neutral and ground busbars
AC input and output wiring
Comes with Red busbars installed
Additional black and blue insulators included for tailoring to suit the application
MNE250SMA-3PH Master
MNE250SMA-SLAVE







