SolarEdge SE3K-RWB Installation Manual page 13

12 Inverter Interfaces
Figure 2: Inverter front view
DC Safety Unit (if applicable), including:
ON/OFF switch: connects and disconnects the DC power of the system
AC output: Cable gland for connection to the grid
DC input: Cable glands or MC4 connectors for connection of the PV
installation
Secondary grounding (optional): Cable gland for grounding
Figure 3: DC Safety Unit
Three Phase System MAN-01-00507-4.2