Generac 200 Amp Next Gen Automatic Generator Transfer Switch, SE Rated, SPD | Integrated Surge Protection Device, Service Entrance Rated, NEMA 3R Outdoor Enclosure, Standard Smart Switch A/C Module

The Generac 200A Service Entrance Rated Automatic Transfer Switch is the highest-specification ATS in Generac's residential lineup, combining 200-amp whole-home automatic transfer with a factory-installed commercial-grade surge protection device in a single enclosure. The service entrance rating means this switch can legally replace your main utility disconnect at the point of entry — removing the need for a separate main disconnect enclosure, simplifying the installation footprint, and reducing overall wiring complexity compared to a non-service entrance rated unit. The generator's Evolution™ or Power Zone™ 200 controller manages all sensing, timing, and transfer commands automatically. The moment utility power drops or degrades, the system responds without any manual intervention — no switches to flip, no cords to connect. At 200 amps on a 120/240V single-phase system, the switch transfers your entire home's load in a single operation, supporting simultaneous HVAC, well pumps, sump pumps, electric ranges, refrigerators, and lighting circuits at once. The integrated whole-home SPD protects modern electronics and variable-speed appliances from transient voltage spikes and utility surges — a risk that increases significantly during the power restoration process after an outage. This factory-installed component is covered under the 5-year limited warranty alongside the transfer switch itself. The NEMA 3R aluminum enclosure with baked powder-coat finish is rated for both indoor and outdoor wall mounting, resisting corrosion and environmental debris year-round. The mechanical interlock inside the unit physically prevents utility and generator power from connecting simultaneously, satisfying NEC Article 702 backfeed prevention requirements. Installation involves service entrance level line-voltage work and must be performed by a licensed electrician. Backed by a 5-year limited warranty and Generac's 24/7/365 Wisconsin-based support team.

• WHOLE-HOME AUTOMATIC BACKUP POWER: Service entrance rated at 200A, this switch replaces your main disconnect and transfers your entire home to a compatible Generac standby generator with no manual action required
• FACTORY-INSTALLED WHOLE-HOME SURGE PROTECTION: A commercial-grade surge protection device built directly into the enclosure guards your appliances and electronics against transient voltage spikes from the utility grid
• 200-AMP FULL-PANEL COVERAGE FOR 120V AND 240V LOADS: Handles simultaneous whole-home circuits including central HVAC, well pumps, electric ranges, sump pumps, and refrigerators on a single-phase system
• NEMA 3R ENCLOSURE FOR INDOOR OR OUTDOOR INSTALLATION: The aluminum corrosion-resistant enclosure with electrostatically applied, baked powder-coat finish deflects rain, snow, ice, and debris in any climate
• MECHANICAL INTERLOCK ELIMINATES BACKFEED RISK: Utility and generator power are physically prevented from connecting simultaneously, meeting NEC Article 702 requirements for standby power system installations
• COMPATIBLE WITH GENERAC HOME STANDBY AND GUARDIAN GENERATORS: Designed for single-phase Generac standby systems with Evolution or Power Zone 200 controllers for fully automated sensing and power transfer
• SERVICE ENTRANCE RATING SIMPLIFIES INSTALLATION: Replaces the main utility disconnect directly, eliminating a separate enclosure; the fast-mount hanging system on select models saves installers 30 or more minutes
• 5-YEAR WARRANTY COVERING THE INTEGRATED SPD: The 5-year limited warranty includes the factory-installed surge protection device, backed by Generac's 24/7/365 customer support team based in Wisconsin