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Generac RTSN400K3 400 Amp 277/480 NEMA 3R CUL

Original price was: $ 2,489.00.Current price is: $ 2,439.00.

The Generac RTSN400K3 400 Amp 277/480 NEMA 3R CUL is designed to use with Non-Service Rated Transfer Switches, three phase, Type 3R, open transition generators.


Generac RTSN400K3 400 Amp 277/480 NEMA 3R CUL

The Generac RTSN400K3 400 Amp 277/480 NEMA 3R CUL outdoor rated enclosure and a heavy duty contactor designed for years of service. The Non-Service Rated Transfer Switches are housed in a steel type 3R enclosed, with electrostatically applied and baked powder paint. The heavy duty Generac contactor is an ETL recognized devise, designed for years of service. The controller at the generator handles all the timing, sensing, exercising functions, and transfer commands.

Generac Residential Transfer Switch Features:

  • Electrically operated, mechanically-held contacts for fast, positive connections.
  • Main contracts are silver plated or silver alloy to resist welding and sticking.
  • 160 millisecond transfer time.
  • Generac 2 Year Warranty – We stand by our high-quality, innovative product design with a 2-year limited warranty.
  • Rated for all classes of load, 100% equipment rated, both inductive and resistive.
  • NEMA 3R Outdoor Rated Enclosure – Designed to give options as to whether to install indoors or outdoors, this enclosure protects the internal components of the switch from rain, snow, ice, and debris.
  • Single coil design.
Informational PDF’s:

Generac ATS Specification Sheet

Generac ATS User Manual

Generac ATS Warranty

Additional information

Weight 133 lbs
Dimensions 13.1 × 30.1 × 48.1 in
Manufacturer Part Number


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