Generac 9928 200A 1ph-120/240V Service Rated Nema 3R Automatic Transfer Switch with Integrated SPD Features:
Generac 9928 200A Service-Rated Automatic Transfer Switch with Surge Protection (1Ø, 120/240V)
The Generac 9928 200 Amp Service-Rated Automatic Transfer Switch with Integrated Surge Protection is designed for complete, whole-home power management in high-demand applications. Built for compatibility with Generac generators using Evolution™ and Power Zone™ 200 controllers, this switch automatically detects utility power loss and transfers your electrical load to generator power within seconds. When utility service returns, it safely restores power—keeping your home or business running without interruption.
What makes this model a premium solution is its integrated whole-house surge protection device (SPD), which helps defend against damaging voltage spikes caused by lightning, grid fluctuations, or internal electrical events. By incorporating surge protection directly into the transfer switch, this unit eliminates the need for a separate SPD while providing continuous protection for appliances, HVAC systems, and sensitive electronics. The system uses thermally protected metal oxide varistors (MOVs) to safely absorb and redirect excess energy, reducing the risk of equipment damage.
As a service entrance rated transfer switch, the Generac 9928 includes an integrated utility service circuit breaker, allowing it to function as the primary disconnect for the electrical system. Its 200-amp capacity makes it ideal for larger homes or commercial applications requiring full electrical coverage. The open transition transfer design ensures safe switching between utility and generator power, while all sensing, timing, and operational logic are controlled by the generator for precise system coordination.
Built for durability and ease of installation, the unit features a NEMA 3R aluminum enclosure with a weather-resistant powder-coated finish, suitable for both indoor and outdoor environments. A fast-mount hanging system simplifies installation and reduces labor time, while the heavy-duty Generac contactor is engineered for long-term reliability. With manual operation capability and a 5-year limited warranty, the Generac 9928 delivers a complete, high-capacity solution for both automatic power transfer and surge protection.
Key Features
-
200 Amp service-rated automatic transfer switch with integrated surge protection
-
120/240V single-phase (1Ø) configuration
-
Built-in whole-house surge protection device (SPD) for comprehensive system protection
-
SPD utilizes thermally protected MOV technology for surge suppression
-
Service entrance rated with integrated utility service circuit breaker
-
Open transition transfer design for safe switching between power sources
-
Compatible with Generac Evolution™ and Power Zone™ 200 controllers
-
Generator-controlled timing, sensing, and transfer operation
-
Adjustable voltage pickup and drop-out settings for optimized system response
-
Heavy-duty Generac contactor for long-term durability
-
NEMA 3R aluminum enclosure for indoor/outdoor installation
-
Powder-coated finish for corrosion and weather resistance
-
Fast-mount system for faster installation
-
Manual operation capability without power applied
-
ETL listed with up to 22,000A withstand rating (200A model)
-
Integrated SPD rated up to 50 kA surge current capacity per phase
-
5-year limited warranty
