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Home Generators Generator Transfer Switch Generac 400 Amp Service Rated Automatic Transfer Switch Single Phase Nema 3R | RTSW400A3
Briggs & Stratton 13kW Generator Power Protect + 100A 16 Circuit ATS | 40742
Briggs & Stratton 13kW Generator Power Protect + 100A 16 Circuit ATS | 40742 $2,899.00
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ASCO 260-Amp Automatic Transfer Switch Series 185 NEMA 3R | 99714-372
ASCO 260-Amp Automatic Transfer Switch Series 185 NEMA 3R | 99714-372 $1,950.00

Generac 400 Amp Service Rated Automatic Transfer Switch Single Phase Nema 3R | RTSW400A3

$1,675.00

  • Automatic Service Rated Transfer Switch
  • Nema 3R Aluminum Enclosure, Suitable for indoors or outdoors
  • Tested and Listed for safe, reliable performance
  • Limited 5 Year Warranty
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Category: Generator Transfer Switch
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Description

Generac’s 400 Amp service rated automatic transfer switch offers whole-house coverage for your back-up power needs.

Every home standby power system needs a transfer switch. It’s how your generator makes sure the power stays on when there’s an outage – automatically switching your home’s circuits from the grid to your generator.

Featuring a Nema 3R aluminum enclosure, this particular switch can be installed either indoors or outdoors.

Through the use of digital power technology (DPM), this switch has the capability to manage up to 4 individual HVAC (24 VAC controlled) loads with no additional hardware.  DPM technology – Load management systems are designed to work together to prevent a generator from being overloaded by large appliance loads.  Multiple air conditioner loads (up to 4) can be managed with DPM.  Loads to be “shed” are in 4 priority levels.  Up to 8 more loads can be managed as well, providing the most installation efficient power managmeent options available with the use of Smart Management Modules.

Designed for use with single phase generators that utilize an Evolution or Nexus controller.  Compaitble with Generac Smart Management Modules, sold separately.

Tested and listed for safe, reliable performance.

UL Listed

USA Engineered and Built

400 Amps, Single Phase, Nema 3R, Service Rated Automatic Transfer Switch.

Product Specifications

Model

Model Number; RTSW400A3

Manufacturer; Generac Power Systems

Made In USA; Yes

Voltage; 120/240V Single Phase

Enclosure; Nema 3R Indoor/Outdoor

UL Listed; Yes

Type; Automatic Transfer Switch

Warranty Information

Consumer Warranty; 5 Year Limited

Commercial Warranty; 5 Year Limited

Fuel

Fuel Gauge; No

Shipping & Delivery
wd-ship-1
wd-ship-2

Effective Date: August 9, 2025

At X Factors Motorsports, we are committed to delivering your order quickly, securely, and affordably.


1. Processing Time

  • Orders are typically processed within 1–2 business days after payment is confirmed.

  • Orders placed on weekends or holidays will be processed on the next business day.


2. Delivery Times

  • Domestic Shipping (United States): Delivery takes 5–7 business days from the date of shipment.

  • International Shipping: Delivery times vary by destination and may take 7–21 business days depending on customs processing and local delivery services.


3. Shipping Rates

  • United States: Free standard shipping on all orders.

  • International: Shipping costs are calculated at checkout based on the delivery address, package weight, and destination country.


4. Carriers Used

We ship orders using trusted carriers such as UPS, FedEx, USPS, and DHL to ensure reliable delivery. Tracking numbers are provided for all shipments.

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    At X Factors Motorsports, we specialize in high-performance engines, outboards, and premium automotive equipment. With expert support, fast shipping, and trusted brands, we help builders, racers, and enthusiasts power their passion — one project at a time.

    • 1204 E Yorba Linda Blvd, Placentia, CA 92870, USA
    • Phone: +1 (714) 694-3374
    • E-mail: sales@xfactorsmotorsports.com
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