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RS25 Standby Generator Set
Cummins® Power Generation Quiet Connect™ Series Liquid Cooled
22kW on vapor propane or 22kW on nat. gas
120/240V single phase or 120/208V three phase

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Features and benefits

Robust product design and testing - The generator is designed to operate under extreme environmental conditions including cold weather starts at as low as -40F. The generator is tested and certified per the latest EPA, UL and IBC Seismic standards and is capable of meeting NFPA110 requirements when equipped with the necessary accessories and properly installed.

Flexible Exercise mode - The innovative, flexible exercise mode enables the generator to exercise at a time, frequency and duration that suits the customer's preference - as little as 2 minutes every 6 months - reducing unnecessary fuel consumption, emissions and noise.

Advanced Enclosure Design - The aesthetically appealing enclosure incorporates special designs that deliver one of the quietest generators of its kind. Aluminum material plus durable powder coat paint provides the best anti-corrosion performance. The robust design is capable of withstanding winds up to 150 MPH and the intelligent design has removable panels and service doors to provide easy access for service and maintenance.

Self diagnostics and easy service - The generator is equipped with Cummins PowerCommand® electronic control to provide industry-leading self diagnostic capabilities. In addition, critical components of the generator are designed to ensure service and preventive maintenance can be completed in a short period of time.

How is the Cummins QuietConnect™ series of generators better than those other brands?  Click here to find out.

Installation Costs - Visit our new standby generator installation cost estimator page for an instant calculation of what may cost to install this generator.


For complete specifications click thumbnail image at top of this page

Power Rating (vapor propane/natural gas) 25 kW / 25 kW
Output Voltage & Current
(vapor propane/natural gas)
120/240V 1-phase 104A / 104A
120/208V 3-phase 86.7A / 86.7A
Sound Level 64 dbA at 23 ft and full load (with optional Stage 2 kit)
about 2 dbA higher without kit
Engine Type Cummins QSJ2.4
2.4 liter, 4 cylinder, cast iron block
Engine and alternator speed 1800 rpm
Cooling System liquid cooled, 50C (122F) ambient rated
Control System PowerCommand® 1.1, NFPA 110 Level 1
Governor electronic for tight speed/frequency regulation
Alternator brushless series CA,
120C temperature rise, NEMA Class H insulation
Enclosure aluminum, sandstone color powder coated,
coastal design, 180 mph wind rated
Warranty 2 year/2000 hour


Order automatic transfer switch with generator menus below.  Or order separately from these lists:
   single phase:
RSS200, OTEC225, ZTX20MX60, MGVATS2001240, RLC1-200 or select from list
   three phase: select from list

Check phone pricing on Cummins generators
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Item Number: RS25
Price: $12,683
Price last updated 6/9/2022
Shipping Weight: 1300 lbs.
This item normally ships in approximately 36 weeks or less.
If not paying by credit card contact NoOutage before placing order.


Part Numbers that can be ordered using the drop-down menus above on this page:
A051Y239 A051Y400 A051Y399 A046X866  A046X864  A046G479  A045P627  A046G494  A046K103  0541-1394  A041J582 A043J733  A0446637  A046N985


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