Enphase IQ System Controller 3 200A Microgrid Interconnect Device

About This Product

The Enphase IQ System Controller 3 200A Microgrid Interconnect Device is the central grid-interconnection and backup control device for compatible Enphase Energy Systems. Manufacturer model SC200D111C240US01 connects the utility grid, Enphase IQ Battery storage, and solar PV using compatible Enphase microinverters. It automatically detects a grid outage and provides Microgrid Interconnect Device (MID) functionality so a properly designed Enphase system can transition between grid-connected and backup operation. This version is intended for systems without generator integration.

Who This Product Suits

The Enphase IQ System Controller 3 suits residential Enphase solar-plus-storage and backup installations that require controlled connection between the utility, solar array, IQ Battery system, and backed-up loads. It is designed for 120/240V single-phase US residential electrical systems and is particularly suited to new Enphase installations using IQ8 Series Microinverters and compatible IQ Battery equipment. Installation and commissioning should be completed by qualified personnel in accordance with Enphase requirements, the NEC, utility rules, and applicable local electrical codes.

Specifications Explained

• Manufacturer model: SC200D111C240US01.
• System Controller: IQ System Controller 3 for compatible Enphase Energy Systems.
• Service equipment: Supports up to 200A overcurrent protection, with a 160A maximum continuous current rating.
• Voltage: Designed for 120/240V single-phase residential systems with 240 VAC line-to-line nominal voltage and 60 Hz nominal frequency.
• Microgrid control: Provides Microgrid Interconnect Device (MID) functionality for automatic isolation from the utility during an outage and transition to backup operation.
• Neutral-forming transformer: Integrated neutral-forming transformer supports 120/240V operation while the Enphase Energy System is operating as a microgrid.
• DER connections: Supports solar PV and IQ Battery connections, with the third DER port available for additional compatible IQ Battery capacity.
• Load control: Supports intelligent load control through the system’s auxiliary contact functionality.
• Installation: Can be incorporated on the service or load side of the main load center as permitted by the system design and applicable electrical requirements.
• Generator integration: This SC200D111C240US01 version does not support generator integration.

Summary

The Enphase IQ System Controller 3 is the grid and backup control point for compatible Enphase residential energy systems. It combines 200A-class service equipment capability, automatic grid isolation, a neutral-forming transformer, solar and battery connections, and load-control functionality in one integrated enclosure. For Enphase IQ8 and IQ Battery installations that do not require generator support, model SC200D111C240US01 provides the required interface for coordinated grid-connected and backup operation.

Further Information From The Manufacturer

IQ System Controller 3, 200A, Grid side installation, includes Neutral Forming Transformer, with load control using aux contact, No generator support, supports additional DER port, supports multi- mode, 240V voltage

About Enphase

Enphase is a global leader in microinverters and fully integrated solar-plus-storage ecosystems. Its U.S. product lineup includes microinverters, batteries, EV charging and advanced monitoring through the Enphase platform.

The brand is widely used in residential solar projects where module-level monitoring, flexible array design and strong installer support are priorities. Enphase systems are especially common in projects that value visibility, expandability and straightforward serviceability.