Generac 9930 200A 1ph-120/240V Nema 3R Automatic Transfer Switch Features:
Generac 9930 200A Automatic Transfer Switch (1Ø, 120/240V, Non-Service Rated)
The Generac 9930 200 Amp Automatic Transfer Switch is designed for high-capacity standby power systems that require seamless, automatic operation during utility outages. Built for compatibility with Generac generators utilizing Evolution™, Power Zone™ 200, and Power Zone™ 410 controllers, this switch continuously monitors incoming utility power and instantly signals the generator to start when an outage is detected. Once power is restored, it automatically transfers the load back to the utility—ensuring uninterrupted operation without manual involvement.
With its 200-amp capacity, this model is ideal for whole-home backup systems and larger electrical loads where maximum coverage is required. As a non-service rated transfer switch, it is intended to be installed downstream of an existing main service disconnect, making it a great option for setups where a separate service entrance disconnect is already in place. This flexibility allows for easier integration into existing electrical systems without replacing the primary service panel.
The Generac 9930 utilizes an open transition transfer design, providing safe and reliable switching between utility and generator power. All timing, sensing, and operational controls are managed directly by the generator’s controller, ensuring precise coordination between system components. Adjustable voltage thresholds, start delays, and exercise cycles allow installers to fine-tune performance based on specific site requirements.
Engineered for durability, the unit features a NEMA 3R aluminum enclosure with a corrosion-resistant powder-coated finish, making it suitable for both indoor and outdoor installations. A fast-mount hanging system simplifies installation and reduces labor time, while the heavy-duty Generac contactor is built for consistent performance over years of operation. Backed by a 5-year limited warranty, the Generac 9930 offers a dependable solution for automatic power transfer in high-demand applications.
Key Features
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200 Amp automatic transfer switch for whole-home or high-load applications
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120/240V single-phase (1Ø) configuration
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Non-service rated design for use with existing main disconnect
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Compatible with Generac Evolution™, Power Zone™ 200 & 410 controllers
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Open transition transfer for safe switching between power sources
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Generator-controlled timing, sensing, and transfer operation
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Adjustable voltage drop-out and pickup settings for optimized response
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Heavy-duty Generac contactor for long-term durability
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NEMA 3R aluminum enclosure for indoor/outdoor installation
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Powder-coated finish for weather and corrosion resistance
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Fast-mount system for quicker, easier installation
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Manual operation capability without power applied
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cETLus listed with 10,000 amp withstand rating
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5-year limited warranty
