Enphase Energy
Enphase IQ System Controller 3G, 200A Backup Transfer Switch with Generator Integration (SC200G111C240US01)
The Brain Behind Seamless Home Backup
The Enphase IQ System Controller 3G (SC200G111C240US01) ties your home together with grid power, IQ Batteries, a standby generator, and Enphase microinverter solar. Acting as the microgrid interconnection device (MID), it automatically detects a grid outage and switches the home to backup power without you lifting a finger.
Picture a summer storm knocking out power across the neighborhood. Streetlights go dark, but inside your home the fridge keeps running and the lights stay on as the IQ System Controller islands your system and draws on solar, batteries, or your generator. When the grid comes back, it reconnects on its own. Enphase recommends the 3G for all new installs using IQ8 Series Microinverters.
Key Features
- Flexible backup options: supports Sunlight Backup, Home Essentials Backup, or Full Energy Independence
- Generator integration with select AC standby generators
- Seamless transition from grid to backup power
- System Shutdown Switch disconnects PV, battery, and generator systems
- Scales with storage: supports IQ Battery 5P units up to 20 kWh (without PCS) or 40 kWh (with PCS)
- 200 A busbar and 160 A continuous rating for whole-home service
- Outdoor NEMA Type 3R enclosure with integrated hold-down capability
Electrical Specifications
| Specification | Value |
|---|---|
| Nominal Voltage (L-L) | 240 VAC ±20% |
| Nominal Frequency | 60 Hz / 56–63 Hz |
| Maximum Continuous Current Rating | 160 A |
| Maximum Input/Output Overcurrent Protection | 200 A |
| Max Generator Circuit OCPD | 80 A |
| Internal Busbar Rating | 200 A |
| NFT Continuous Rated Power | 3,600 VA |
Mechanical Specifications
| Specification | Value |
|---|---|
| Dimensions (W × H × D) | 19.7 × 36 × 9.7 in (50 × 91.6 × 24.6 cm) |
| Weight | 87 lb (39.4 kg) |
| Ambient Temperature Range | -40°F to 122°F (-40°C to 50°C) |
| Enclosure | Outdoor, NEMA Type 3R, polycarbonate |
| Maximum Altitude | 2,500 m (8,200 ft) |
| Cooling | Natural convection and heat shield |
Compatibility
- Battery: IQ Battery 5P (IQBATTERY-5P-1P-NA)
- Microinverters: IQ8, IQ7, IQ6, and M Series
- IQ Combiner: IQ Combiner 5/5C
What's in the Box
- IQ System Controller 3G (includes NFT and MID)
- System Shutdown Switch (EP200G-NA-02-RSD)
- Wall-mounting bracket
- 4-pole circuit breaker (BRK-20A40A-4P-240V)
- Accessories kit
Compliance
UL1741, UL1741SA, IEEE 1547:2018 (UL1741-SB), UL1741 PCS CRD, UL1998, UL869A, UL508, UL50E, CSA 22.2 No. 107.1, 47 CFR Part 15 Class B
Warranty
Up to 10-year limited warranty (System Shutdown Switch carries a 5-year warranty).
Datasheet
Download the Enphase IQ System Controller 3/3G Datasheet (PDF)