enphase IQ System Controller User Manual

IQ System Controller System Shutdown – North America
3 © 2021 Enphase Energy Inc. All rights reserved.
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

enphase IQ System Controller Specifications

General

Model	IQ System Controller
Grid Connection	Single Phase
Rated Output Power	Refer to specific model datasheet (e.g., IQ System Controller 2, IQ System Controller 3/3G)
Enclosure Rating	NEMA 3R
Operating Temperature Range	-40°C to +50°C (-40°F to +122°F)
Enclosure Environmental Rating	Outdoor
Surge Protection	Yes
Networking	Wi-Fi, Ethernet
Frequency	50/60 Hz
Communication	Zigbee (for communication with Enphase microinverters and batteries)
Compatibility	Enphase IQ Microinverters