Generac 400-Amp Generator Transfer Switch, Automatic Smart Transfer Switch with Load Management, 120/240V Single Phase, NEMA 3R Enclosure, AC Shedding Ready

Generac RTSC400A3 is a 400A non-service entrance automatic generator transfer switch for single-phase 120/240V standby systems. It monitors utility power and automatically transfers the electrical load to the generator during outages, then returns to utility when service is restored. The switch includes integrated load management to control HVAC loads and supports Smart Management expansion for advanced load prioritization in whole-home backup setups.

• 400A FULL-LOAD TRANSFER: 400A automatic generator transfer switch provides full-load power transfer for large residential or light commercial standby applications
• AUTOMATIC SMART OPERATION: Automatically transfers from utility to generator power during outages and returns to utility when power is restored
• HVAC LOAD CONTROL: Integrated load management can manage up to 4 individual HVAC loads with no additional accessories required
• EXPANDABLE SYSTEM: Expandable with Smart Management Modules to prioritize and shed additional loads as needed
• DURABLE ENCLOSURE: NEMA 3R aluminum enclosure with heavy-duty Generac contactor supports durable outdoor installations
• WHAT'S INCLUDED: 400A transfer switch enclosure with integrated load management plus installation and safety documentation