IQ System Controller System Shutdown
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North America
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a) Working of the Enphase System Shut down
The overall system layout with an Enphase Energy System Shutdown will look like below with a full home
back up solution
Figure 1: Full home back up with system shut down switch
When the Enphase Energy System shutdown switch is activated, the IQ System Controller opens the
relays controlling the IQ Battery, Solar, Generator, and auto transformer and only keeps the MID relay
closed.
This effectively isolates the home from the Enphase Energy system and connects it directly with the grid.
b) Wiring the Enphase System Shut down
The wiring and installation of the Enphase Energy System shutdown switch is straightforward. Upon
purchasing the SKU EP200G-NA-02-RSD, the kit contains a DPST switch along with a detailed quick
installation guide for wiring the switch.
The Switch needs to be wired to the NC aux contacts of the IQ system controller as indicated in figure 2