Generac RXUW150A3 150A 1ph-120/240V Service Rated Nema 3R Automatic Transfer Switch w/Meter Socket Features:
Generac RXUW150A3 150A Automatic Transfer Switch Features:
The Generac RXUW150A3 is a premium service-rated automatic transfer switch engineered for homes that require both whole-house backup and integrated utility metering. Designed for single-phase 120/240V systems, its 150-amp capacity and built-in service disconnect make it eligible to serve as the main disconnect panel in many installations. What makes this model especially unique is the inclusion of a meter socket—allowing utility meter installation directly on the transfer switch assembly, simplifying installation layout and saving space.
When utility power fails, the RXUW150A3 automatically transfers your load from the grid to your standby generator. Once utility service is restored to acceptable voltage levels, it switches back to normal power automatically. The transition is of “open-transition” type, ensuring utility power is fully disconnected before generator power engages, which helps protect both generator and home wiring systems from overlap or backfeed.
This switch has rugged build quality appropriate for outdoor or sheltered indoor installation. It comes in a NEMA 3R rated aluminum enclosure with a weather-resistant finish that guards against corrosion, rust, and environmental wear. Its internal components, including a heavy-duty contactor and properly sized lugs, are engineered for frequent switching under load. All timing, voltage sensing, and cooldown routines are controlled by the generator’s controller (e.g. Generac’s Evolution™ or Nexus™), keeping the switch itself mostly mechanical and dependable.
With its integrated meter socket, service-rated configuration, and high amperage, the RXUW150A3 offers an all-in-one solution for homeowners who want tidy installations, code compliance, and whole-house protection wrapped into one switch. Backed by a 5-year limited warranty, it promises both performance and peace of mind.
Key Features
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150 Amp service-rated automatic transfer switch (single-phase, 120/240V)
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Built-in meter socket for direct utility meter installation, simplifying panel layout
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Service entrance capable — can serve as the main electrical disconnect in compliant installations
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Open-transition switching to avoid overlap between utility and generator power
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NEMA 3R aluminum enclosure with weather-resistant finish; suitable for outdoor or protected indoor mounting
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Heavy-duty contactor and rugged internal components built to handle high loads and frequent switching
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Compatible with Generac’s controller systems for voltage sensing, timing, and automatic transitions
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5-year limited warranty
