Victron energy MultiPlus 12/3000/120 – 50 Manual page 52

A AC input: (left to right) L (phase), N (neutral), PE (ground).
B 2x RJ45 connector for remote control and/or parallel / three-phase operation
C AC output: (left to right) ) L (phase), N (neutral), PE (ground).
E Battery minus.
F Battery plus.
G Terminals for: (left to right) Voltage sense plus, Voltage sense minus, Starter
battery plus, Temperature sensor plus, Temperature sensor minus.
H Connections for remote switch: Short left and middle terminal to switch the
MultiPlus "on", Short right and middle terminal to switch the MultiPlus to
"charger only".
I Dipswitches DS1 tm DS8 for set-up mode.
J Pushbuttons for set-up mode.
K Alarm contact: (left to right) NC, NO, COM
L Primary ground connection (PE)