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Home Generators Generator Transfer Switch Generac 400 Amp ATS 277/480 3 Phase NEMA 3R Cabinet
Generac 600 Amp ATS 120/208 3 Phase NEMA 3R Cabinet
Generac 600 Amp ATS 120/208 3 Phase NEMA 3R Cabinet $3,055.00
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Generac 400 Amp ATS 277/480 3 Phase NEMA 3R Cabinet

$1,739.00

  • Electrically operated, mechanically-held contacts for fast, positive connections
  • Rated for all classes of load, 100% equipment rated, both inductive and resistive
  • 160 millisecond transfer time
  • Dual coil design
  • Main contacts are silver plated or silver alloy to resist welding and sticking
  • NEMA 3R (indoor/outdoor rated)
  • Limited Two Year Warranty
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Category: Generator Transfer Switch
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Description

Generac Power Systems RTSN400K3 Details and Specifications

Generac 400 Amp ATS 277/480 3 Phase NEMA 3R Cabinet.
The transfer switch monitors utility power and signals the generator to start when utility power is interrupted. When utility power returns, the transfer switch returns the electrical load from the generator back to the utility. This ensures your most important electrical loads are powered, within seconds, even when you’re away.

All RTS transfer switches are housed in a NEMA/UL Type 3R enclosure, with electrostatically applied and baked powder paint. The Heavy Duty Generac Contactor is a UL recognized device, designed for years of service. The control at the generator handles all the timing, sensing and exercising functions. Designed to operate with the digital Nexus controller used on liquid-cooled QT series gaseous generators from 22- 150 kW

Product Specifications

Model

Model Number; RTSN400K3

Manufacturer; Generac Power Systems

Made In USA; Yes

Voltage; 277/480V Three Phase

Enclosure; Nema 3R Indoor/Outdoor

UL Listed; Yes

Type; Automatic Transfer Switch

Transfer Switch Model; RTS

Features

Dimensions; 48.1H x 30.1W x 13.1D

Warranty Information

Consumer Warranty; 5 Year Limited

Commercial Warranty; 5 Year Limited

Alternator

Frequency; 60 Hz

Fuel

Fuel Gauge; No

Transfer Switches

Transfer Switch Amps; 400 Amps

Transfer Switch Circuits; Whole Panel

Ats Poles; 2 Pole

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.

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