Generac 400-Amp Automatic Transfer Switch (277/480V)


  • Brand: GENERAC
  • Product Code: BTS-401862
  • Availability: In Stock

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

  • 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

Model NumberRTSN400K3
ManufacturerGenerac Power Systems
Voltage277/480 Three-Phase
Frequency60 Hertz
Rated Amps400 Amps
EnclosureNEMA 3R
Transfer Switch StyleStandard Installation
ATS Poles3 Poles
ATS Service DisconnectNo
Max Utility Input400 Amps
Max Generator Input400 Amps
UL ListedYes
200 Pounds
Consumer Warranty5 Years
Product Length31.3 Inches
Product Width24 Inches
Product Height10 Inches

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