• Manufacturer: Cummins
  • SKU: A061C602
Out Of Stock
Ships in 4-7 weeks
Free Shipping
  • Free Shipping Options Available
  • Price Match On Most Items
  • Manufacturer Direct
  • Exceptional Customer Service
  • Free Replacement Shipping
To place an order over the phone or for immediate assistance, please call (888) 978-4993. For after hours sales please call (888) 999-1522.


Brand new & manufacturer direct
5 year manufacturer's warranty
Works with Liquid Propane and Natural Gas
Authorized Cummins dealer
Free shipping


Cummins 18 / 20 kilowatt Quiet Connect Standby Generator with 200-Amp, Service-Entrance-Rated, NEMA 3R Automatic Transfer Switch supplies your entire home during an outage.

The RS20AC is a home standby generator permanently connected to your house by an automatic transfer switch. The generator operates on your homes existing natural gas (18kW) or LP Gas (20kW) supply. It monitors the power company distribution lines 24/7, then automatically starts and runs when it detects an outage and continues to run until the utility restores power.

Remote internet access is fully functional and integrated into the generator controller. Access the generator controller on any smartphone, laptop, tablet, or desktop computer. Operate the generator manually, program the exercise cycle, view status and reports, or schedule maintenance. Most home standby generator manufacturers only offer internet access as an add-on feature, but it’s included in every Quiet Connect Generator shipped.

The homeowner can choose the exercise cycle that fits their schedule and lifestyle. A Patented “Crank-Only” mode reduces wear and tear while saving fuel and reducing noise. The engine cranks without starting while the controller performs diagnostics. The generator gets the exercise it needs while the controller ensures that it operates correctly.

Control up to four central air conditioners. The generator controller can remember the load requirements of four different air conditioners and allow them to turn on and off when power is available. This prevents overloading and allows a smaller, more fuel-efficient generator to do the work of a larger unit.

The A045P697 Automatic Transfer Switch (ATS) has a NEMA 3R rating for indoor and outdoor use that installs between the utility meter and a typical 200-amp main service panel. The generator controller monitors the utility supply 24 / 7 and automatically starts the generator the moment an outage is detected. After the generator starts, it signals the transfer switch to supply the home with power from the generator.

The RS20AC produces clean power to operate sensitive electronics or run heavy duty motors and everything in between. From a no load condition to accepting a normal household load, the voltage varies by no more than 1.25 percent. Under steady-state conditions, voltage is still maintained within 1.25 percent and frequency will not vary more than 1.25 percent. Clean, worry free power you can count on.

Quiet Connect RS20AC home standby generators are powered by a Cummins QSJ999G Engine, designed and built by Cummins, the world-class leader in diesel and natural gas engines. It runs on LP Gas or Natural Gas—field selectable during installation.
A compact, efficient design packs the Quiet Connect home standby generator into a 34 x 36 x 27 inch aesthetically appealing enclosure with a corrosion resistant aluminum exterior and galvanized steel interior that reduces noise and vibration.

Cummins Power Generation supports the Quiet Connect line with the world’s largest and best trained worldwide network of certified distributors and dealers. This network can answer questions about maintenance and operation and offers a complete selection of maintenance parts, accessories, and products along with manuals and specification sheets.

Quiet Connect Air-Cooled Generators include a five-year / 2000-hour limited warranty that covers travel and labor for two years and parts for a full five years. The A045P697 ATS had a separate 2-year warranty independent of the generator.

Optional Load-Add / Load-Shed Devices can each control two high voltage loads. Suitable for electric hot water heaters, electric dryers, well pumps, and similar loads.

Make installation easier with a Generator Pad. They keep the generator from sinking into the dirt and are required by some local building codes. Using a premade generator pad eliminates the need for a poured concrete base or a pea gravel bed.

Battery requirement is a Group 51R. 450 CCA which can be purchased locally.


  • 20kw generator
  • 200A SE-Rated ATS RS20AC (Automatic Transfer Switch)
  • Aluminum enclosure


    • Cummins 20 kilowatt Quiet Connect Series Home Standby Generator.
    • Automatic Transfer Switch for 24 / 7 independent operation.
    • Remote Internet Access to the Quiet Connect Controller and Generator.
    • User-Programmable Exercise including “Crank-Only” Mode.
    • Intelligent Load Management for up to four loads such as Air Conditioners.
    • Starts and runs a 5-ton A/C while accepting a full household load.
    • Field Selectable for Natural Gas or Propane Fuel.
    • Rated for installation as close as 18-inches to the home.
    • Extremely Quiet Operation – 65 dB or less.
    • Operates at 0 degrees out of the box. Cold weather kits add reliable operation for extreme climates.


      Model Number RS20AC - A054X497 - C20N6HC
      Manufacturer Cummins Power Generation
      Made In USA Yes
      Rated Watts 18kW NG/ 20kW LP
      Rated Amps 75 NG/83.3 LP
      Voltage 120/240V Single Phase
      AC Ton Rating 5 Ton
      Enclosure Aluminum
      UL Listed Yes
      Decibel Rating 7m 65 dbA @ 23 ft
      Starting System Automatic Start
      Low Oil Alert Yes
      Hour Meter Yes
      Battery Requirements Group 51R, 12V, 450 CCA Min
      Mounting Pad Requires Prepared Site
      Weight 598 lbs
      Dimensions 34.1L x 36W x 27.3H
      Engine Brand Cummins QSJ999G
      Engine Size 999 cc
      Engine RPM 3600
      Cooling System Air Cooled
      Frequency 60 Hz
      Auto Voltage Regulation Yes
      Type Natural Gas (NG) / Propane (LP)
      NG Power Capacity 18kW
      LP Power Capacity 20kW
      NG Consumption Full Load 300 cu.ft/hr
      NG Consumption Half Load 205 cu.ft/hr
      LP Consumption Full Load 3.2 gal/hr
      LP Consumption Half Load 1.9 gal/hr
      Transfer Switch
      Model RA 200 - A045P697
      Switch Amps 200
      Switch Circuits Whole Service
      ATS Poles 2 Pole
      Switch Weight 58 lbs
      Warranty Information
      Consumer Warranty 5 Year Limited Warranty
      Type Standby Generator
      Shipping Information
      Shipping Dimensions 45H X 40W X 38D
      Shipping Weight 610 lbs
        As a Cummins authorized dealer, we offer a 5 year limited factory warranty on this item.

        Customer Reviews

        Based on 1 review

        Pay over time

        Clear, transparent terms. Fair rates. No prepayment penalties.

        GET MY RATE

        Financing Available

        We provide easy and affordable financing through our partner, Bread, so you can pay for your purchase over time.

        calendar icon

        Affordable Monthly Plans

        Pay for your order over 12, 18, or 24 months at competitive interest rates*.

        thumbs up icon

        No Prepayment Penalties

        Pay for your purchase with monthly payments and prepay at any time without penalty.

        clock icon

        Quick and Easy Application

        Get a decision in seconds with no obligation to buy.

        Check your rate in seconds without leaving our site

        GET MY RATE

        Customer Reviews

        Based on 1 review

        Customer Reviews

        Based on 1 review


        Sold Out