Standby Generator Sizing Calulator
Standby Generator Sizing Calulator

Cummins RS20AC - 20kW Quiet Connect™ Series Home Standby Generator System (200A Service Disconnect)

Cummins RS20AC - 20kW Quiet Connect™ Series Home Standby Generator System (200A Service Disconnect)
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Model: A054X497
Recommended
(Based on expert analysis, manufacturer ratings and customer reviews)
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5
Number of Reviews (6)
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$4,500.00

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  • Product Description
  • 6
    Reviews
  • 4
    Product Q&A
  • Recommended Accessories
  • How-To Articles
  • Manuals
Product Description
+
Grade
Style
Run Watts
20,000
Rated Watts
Voltage
120/240 Single-Phase
Fuel
Engine
Grade
Emergency
Style
Standby (Air Cooled)
Run Watts
20,000
Voltage
120/240 Single-Phase
Fuel
LP/Natural Gas
Engine
Cummins Onan
Features
Features
  • Cummins Quiet Connect™ Series 20kW Air-Cooled Standby Generator Package
  • New for 2017 with improved design, exercise modes, load management & monitoring
  • Includes 200-Amp Service Entrance Rated Automatic Transfer Switch
  • Installs between main meter & service panel for faster & less costly installation
  • Weather Protective Aluminum/Steel Sound Enclosure
  • Can be installed* within 18" of a build (NFPA 37) - Always check local building codes
  • Sound dampening engineering limits noise level to a low 65dB(A) @ 7M
  • 999cc Cummins Air-Cooled V-Twin OHV Engine
  • Field-selectable, runs on ultra efficient natural gas or LP (vapor)
  • Designed to operate down to 0 F; Cold weather accessories available for colder climates
  • < 5% THD (Total Harmonic Distortion)
  • Clean power that won't damage your electronic devices
  • Patented "Crank Only" Exercise Mode
  • Provides diagnostics without running engine for less wear and lower fuel costs
  • Allows user to select time, date and frequency of exercise
  • Load Management Capability (Requires Load Management Kit - Sold Separately)
  • Maximizes generator power by intelligently managing up to 2 electrical loads
  • Cummins Connect Cloud For Remote Monitoring
  • Monitor, exercise and manually run the generator
  • Use your computer, tablet or phone for maximum monitoring flexibility
  • Cold Weather Equipped
  • Operates in cold weather with performance down to 0 °F
  • Cold weather accessories allow for even colder operation (Sold Separately)
  • Standard 5-Year / 2,000 Hour Limited Warranty
Specifications
Engine
Engine Brand
Cummins Onan
Starting System
12v Auto Start
CC
999 CC
Engine RPM
3600 RPM
Low Oil Alert/Shutdown
Yes
Overview
Made in USA
Yes
Weight
540 Pounds
Product Style
Standby Generator
Product Length
34.1 Inches
Product Width
36.0 Inches
Product Height
27.3 Inches
Consumer Warranty
5 Years
UPC
690781005266
Additional Model Numbers
C20N6HC, A054X497
Product Specs
Voltage
120/240 Single-Phase
Frequency
60 Hertz
Alternator
Brush
Auto Voltage Regulation
Yes
Surge Watts
20000 Watts
Rated Watts
20000 Watts
Fuel Type
LP/Natural Gas
NG Power Capacity
18000 Watts
LP Power Capacity
20000 Watts
NG Fuel Consumption @ 50% Load
205 ft³/hr
NG Fuel Consumption @ 100% Load
300 ft³/hr
LP Fuel Consumption @ 50% Load
1.9 gallons/hr
LP Fuel Consumption @ 100% Load
3.2 gallons/hr
Rated Amps
75 (NG) & 83.3 (LPV) Amps
Decibel Rating @ 7m Learn More Sound levels are measured in decibels (dB). The lower the decibel rating, the less noise the product makes. As an example, a ticking watch is 20 dB while on the other end of the scale, a lawn mower is around 90 dB.
65
Hour Meter
Yes
Voltage Meter
Yes
Transfer Switch
Automatic (Included)
Transfer Switch Amperage
200-Amps
Enclosure
Aluminum
Battery
Not Included
Circuit Breaker Size
100 Amps
A/C Ton Rating
5-Tons
Transfer Switch Style
Service Disconnect
ATS Load Prioritizing
Built-In
ATS Service Disconnect
Yes
Cooling System
Air Cooled
UL Listed
Yes
Grade Type
Emergency
Grade
Style
Run Watts
20,000
Rated Watts
Voltage
120/240 Single-Phase
Fuel
Engine
Grade
Emergency
Style
Standby (Air Cooled)
Run Watts
20,000
Voltage
120/240 Single-Phase
Fuel
LP/Natural Gas
Engine
Cummins Onan
Features
Features
  • Cummins Quiet Connect™ Series 20kW Air-Cooled Standby Generator Package
  • New for 2017 with improved design, exercise modes, load management & monitoring
  • Includes 200-Amp Service Entrance Rated Automatic Transfer Switch
  • Installs between main meter & service panel for faster & less costly installation
  • Weather Protective Aluminum/Steel Sound Enclosure
  • Can be installed* within 18" of a build (NFPA 37) - Always check local building codes
  • Sound dampening engineering limits noise level to a low 65dB(A) @ 7M
  • 999cc Cummins Air-Cooled V-Twin OHV Engine
  • Field-selectable, runs on ultra efficient natural gas or LP (vapor)
  • Designed to operate down to 0 F; Cold weather accessories available for colder climates
  • < 5% THD (Total Harmonic Distortion)
  • Clean power that won't damage your electronic devices
  • Patented "Crank Only" Exercise Mode
  • Provides diagnostics without running engine for less wear and lower fuel costs
  • Allows user to select time, date and frequency of exercise
  • Load Management Capability (Requires Load Management Kit - Sold Separately)
  • Maximizes generator power by intelligently managing up to 2 electrical loads
  • Cummins Connect Cloud For Remote Monitoring
  • Monitor, exercise and manually run the generator
  • Use your computer, tablet or phone for maximum monitoring flexibility
  • Cold Weather Equipped
  • Operates in cold weather with performance down to 0 °F
  • Cold weather accessories allow for even colder operation (Sold Separately)
  • Standard 5-Year / 2,000 Hour Limited Warranty
Specifications
Engine
Engine Brand
Cummins Onan
Starting System
12v Auto Start
CC
999 CC
Engine RPM
3600 RPM
Low Oil Alert/Shutdown
Yes
Overview
Made in USA
Yes
Weight
540 Pounds
Product Style
Standby Generator
Product Length
34.1 Inches
Product Width
36.0 Inches
Product Height
27.3 Inches
Consumer Warranty
5 Years
UPC
690781005266
Additional Model Numbers
C20N6HC, A054X497
Product Specs
Voltage
120/240 Single-Phase
Frequency
60 Hertz
Alternator
Brush
Auto Voltage Regulation
Yes
Surge Watts
20000 Watts
Rated Watts
20000 Watts
Fuel Type
LP/Natural Gas
NG Power Capacity
18000 Watts
LP Power Capacity
20000 Watts
NG Fuel Consumption @ 50% Load
205 ft³/hr
NG Fuel Consumption @ 100% Load
300 ft³/hr
LP Fuel Consumption @ 50% Load
1.9 gallons/hr
LP Fuel Consumption @ 100% Load
3.2 gallons/hr
Rated Amps
75 (NG) & 83.3 (LPV) Amps
Decibel Rating @ 7m Learn More Sound levels are measured in decibels (dB). The lower the decibel rating, the less noise the product makes. As an example, a ticking watch is 20 dB while on the other end of the scale, a lawn mower is around 90 dB.
65
Hour Meter
Yes
Voltage Meter
Yes
Transfer Switch
Automatic (Included)
Transfer Switch Amperage
200-Amps
Enclosure
Aluminum
Battery
Not Included
Circuit Breaker Size
100 Amps
A/C Ton Rating
5-Tons
Transfer Switch Style
Service Disconnect
ATS Load Prioritizing
Built-In
ATS Service Disconnect
Yes
Cooling System
Air Cooled
UL Listed
Yes
Grade Type
Emergency
Product Specs
+
Specifications
Engine
Engine Brand
Cummins Onan
Starting System
12v Auto Start
CC
999 CC
Engine RPM
3600 RPM
Low Oil Alert/Shutdown
Yes
Overview
Made in USA
Yes
Weight
540 Pounds
Product Style
Standby Generator
Product Length
34.1 Inches
Product Width
36.0 Inches
Product Height
27.3 Inches
Consumer Warranty
5 Years
UPC
690781005266
Additional Model Numbers
C20N6HC, A054X497
Product Specs
Voltage
120/240 Single-Phase
Frequency
60 Hertz
Alternator
Brush
Auto Voltage Regulation
Yes
Surge Watts
20000 Watts
Rated Watts
20000 Watts
Fuel Type
LP/Natural Gas
NG Power Capacity
18000 Watts
LP Power Capacity
20000 Watts
NG Fuel Consumption @ 50% Load
205 ft³/hr
NG Fuel Consumption @ 100% Load
300 ft³/hr
LP Fuel Consumption @ 50% Load
1.9 gallons/hr
LP Fuel Consumption @ 100% Load
3.2 gallons/hr
Rated Amps
75 (NG) & 83.3 (LPV) Amps
Decibel Rating @ 7m Learn More Sound levels are measured in decibels (dB). The lower the decibel rating, the less noise the product makes. As an example, a ticking watch is 20 dB while on the other end of the scale, a lawn mower is around 90 dB.
65
Hour Meter
Yes
Voltage Meter
Yes
Transfer Switch
Automatic (Included)
Transfer Switch Amperage
200-Amps
Enclosure
Aluminum
Battery
Not Included
Circuit Breaker Size
100 Amps
A/C Ton Rating
5-Tons
Transfer Switch Style
Service Disconnect
ATS Load Prioritizing
Built-In
ATS Service Disconnect
Yes
Cooling System
Air Cooled
UL Listed
Yes
Grade Type
Emergency
Reviews
(6)
+
Cummins Power Generation A054X497 Reviews & Ratings
Product Q&A
(4)
+
Search Product Q&A's Answered by Jared, the Generator Expert
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Is the base of the unit a composite material, and does the base need to be set on a concrete pad?
Mike R. 
from Tennessee 
January 30, 2019
Answer
The Cummins unit you listed has a steel base and would require a foundation to sit on. You can pour your own concrete or purchase a composite base from us which is listed under the recommended accessories. Please check with your local code to see what is required.
+
Are these units made in the USA?
Bill 
from Texas 
June 17, 2018
Answer
According to Cummins, all standby units are designed and built in Fridley, MN.
+
Does the battery come with the package deal?
Joel T. 
from Iowa 
June 16, 2018
Answer
The battery is not included and would require a Group 51R, 450 CCA purchased locally. 
+
Is the engine in this unit truly a Cummins engine or a worked Briggs engine?
Nick 
from Pennsylvania 
March 17, 2017
Answer
This is not a reworked Briggs engine as the old units were. Probably the most significant change with the new units is the fact that Cummins is now manufacturing their own 999cc air-cooled engine. This is a Cummins made unit from the ground up. They use the same 999cc engine in all the air-cooled units. Because of this, all three air-cooled sizes fit into the same enclosure. The 13kW uses a smaller alternator than the 17kW and 20kW, but all three have the same footprint.
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How-To Articles
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Manuals
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Cummins RS20AC - 20kW Quiet Connect™ Series Home Standby Generator System (200A Service Disconnect)
Cummins Power Generation A054X497
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