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Generac-ATS-Single Phase-800A-NEMA 3R

800 Amps & Single-Phase

This single-phase 800-amp switch can be used with any liquid-cooled Generac Guardian, QuietSource, or Commercial-Series standby generator. Switch an open-transition model with NEMA 3R outdoor-mount enclosure. Is rated for all classes of load, inductive and resistive. Transfer time of 160 milliseconds. Two-pole dual-coil design. Warranty 2-years limited.

  • Important: See the shipping tab for information regarding our liftgate option, and residential versus commercial deliveries. At present, because T-Rex is shipping Generac products direct from the company's Wisconsin-based factory, any
  • residential delivery weighing in excess of 80 lbs will require the $75.00 liftgate shipping option. Shipments to commercial addresses (non-residences) remain exempt from liftgate charges unless specified by customer.

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    Model:  RTSP800A3
    Price:  $5,170.00
    Available Options:
    Type Delivery Preferred:

    Model Specs

    Manufacturer: Generac
    Model #: RTSP800A3
    Model Description: 800-Amp RTS Single-Phase Automatic Transfer Switch (Outdoor Model)
    Rating: Open
    Built-In Load-Shedding Capability?: No
    Price: $5,170.00

    Voltage (AC): 120/240
    Phase: Single
    Frequency: 60 Hz
    Maximum Generator kilowatts: 150
    Rated Amps: 800
    Maximum Generator Amps: NA
    Maximum Withstand Amps: 65000
    Number of Poles: 2
    Number of Circuit Breakers: NA

    Power Management
    Startup Delay (After Power Interruption): Adjustable (10 - 30 Seconds)
    Engine Warm-Up Duration: 5 Seconds
    Engine Cool-Down Period: 60 Seconds
    Exerciser: Every 7 Days (12 Minutes)
    Minimum Run Time: NA
    Return to Utility (Retransfer): 15 Seconds
    Voltage Sensing (Normal Power Source): Yes
    Voltage Sensing (Standby Source): Yes
    Frequency Sensing (Standby Source): No

    UL Listing: Yes
    Weight: 469 lbs
    Dimensions (Inches): 21(Depth) x 36W x 66H
    Cabinet Type: NEMA 3R

    Additional Information
    Compatible with all Generac liquid-cooled models from 22 kW to 150 kW
    Non-service rated; open transition
    Silver-plated main contacts
    100% equipment rated
    Rated for all classes of load, inductive and resistive
    Dual coil design
    160 millisecond transfer time

    Spec Sheet Pdf

    Generac RTS-Series ATS 600-800A Spec SheetGenerac RTS-Series ATS 600-800A Spec Sheet


  • 24-month manufacturer's limited warranty

  • Shipping

    NOTE: all Generac residential shipments weighing in excess of 80 lbs require our $75.00 liftgate shipping charge (by Generac policy). Liftgate service is optional for commercial deliveries. This policy change does not apply to shipments from other manufacturers.
    The T-REX Free Shipping Pledge:


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    T-Rex Generators distributes products from many different standby and portable generator manufacturers at substantially discounted prices. These represented companies include: Asco automatic transfer switches, Briggs & Stratton generators, Winco generators, Generac Generators, GenTran transfer switches, Reliance Controls Transfer Switches, and Zenith automatic transfer switches. T-Rex also carries Honda powered generators which have the same time-tested Honda engines as the substantially more expensive Honda generator brand units.