
Enphase IQ System Controller 3 INT 100A
Enphase IQ System Controller 3 INT 100A
Enphase IQ System Controller 3 INT — PV, distribution and the microgrid interconnect in one enclosure — with the cell modem already in it.
An Enphase system that provides backup needs a microgrid interconnect device, a distribution arrangement and a PV connection. The IQ System Controller 3 is all three in one enclosure, which is the difference between one box on the wall and three.
About the Enphase IQ System Controller 3 INT
It detects a grid outage automatically and transitions the property to backup without intervention, and it carries a System Shutdown Switch for safety.
The cell modem is bundled with a pre-paid five-year data plan, so the system is reachable from commissioning without arranging anything separately.
It supports single-phase and three-phase configurations on both the solar and grid sides, with conduit entry from the bottom, rear, left and right — which matters more than it sounds when the position is fixed by the existing board.
What does this fit?
This is the consolidated PV, distribution and microgrid interconnect unit an Enphase system islands through.
One unit per system. It supports single-phase and three-phase configurations for both solar and grid, with a main circuit breaker up to 100 A single phase or 80 A three phase.
The products it is ordered with:
What the job needs
The details that decide whether this suits the system:
- One consolidated unit for PV, distribution board and microgrid interconnect device.
- Main circuit breaker up to 100 A on single phase and up to 80 A on three phase.
- Supports single-phase and three-phase configurations for both solar and grid.
- A cell modem with a pre-paid five-year data plan and a System Shutdown Switch are bundled.
- Conduit entry from the bottom, rear, left and right.
- IP55 enclosure, wired controls, 10-year limited warranty.
Where this earns its place
The IQ System Controller 3 INT is specified most often for these jobs.
Enphase IQ System Controller 3 INT technical data
Questions we get asked about this inverter
What does it replace?
Three things: the PV connection, the distribution arrangement and the microgrid interconnect device, all in one enclosure.
What main breaker size does it take?
Up to 100 A on single phase and up to 80 A on three phase.
Is connectivity included?
Yes — a cell modem with a pre-paid five-year data plan is bundled.
Does it switch to backup automatically?
Yes. It detects grid outages automatically and provides a seamless transition to backup.
Documents, advice and trade pricing
Every datasheet, certificate, installation manual and warranty document we hold for this product is in the Documents tab below. See the rest of our storage range, our hybrid inverters and our batteries, or email sales@clearraysolar.com if you would like us to check a pairing before you order.
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Everything you need in one place.
- Inverters
- Batteries
- Mounting Systems
- Cabling & Accessories
- Protection Devices
Delivery times vary by region:
- UK — 1-2 business days
- Highlands & Islands — 1-2 business days
Returns accepted within 14 days of delivery for unused items in original packaging.


