

Cummins 25 kW Generator – RS25 | NG/LPV | Aluminum Enclosure |
$16,035.10 – $16,287.00Price range: $16,035.10 through $16,287.00
Choose Voltage and Phase |
120-240V-1Ph ,120-208V-3Ph ,120-240V-3Ph |
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Cummins 25 kW Generator – RS25 | NG/LPV | Aluminum Enclosure | 120/240V 1Ph
The Cummins RS25 25kW Generator delivers trusted whole-home or light commercial backup power when you need it most. Built for performance in harsh conditions, this generator runs on your choice of natural gas or liquid propane vapor and is designed to meet strict EPA, UL, and seismic compliance standards.
With advanced quiet technology, a weather-resistant aluminum enclosure, and easy maintenance access, the RS25 is engineered for dependable protection and long-term performance.
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🔧 Key Features & Benefits
- Cold-Weather Ready: Starts at temperatures as low as -40°F for year-round reliability.
- Flexible Fuel Use: Field-selectable operation on either natural gas or liquid propane vapor (NG/LPV).
- Quiet Operation: Sound Level 1 aluminum enclosure keeps noise to a minimum—just 69 dB(A) at 23 feet.
- Smart Exercise Mode: Customize automatic run cycles to minimize fuel use and reduce emissions.
- Rugged Design: Wind-rated up to 180 mph and coated for corrosion resistance.
- PowerCommand® Control: Advanced digital controls with auto start/stop, diagnostics, alarms, and remote monitoring compatibility.
- Simple Maintenance: Designed with removable service panels, coolant and oil drain extensions, and clearly marked access points.
- Certified Performance: Meets UL 2200, NFPA 110 (when properly installed), EPA, and IBC seismic requirements.
📐 Technical Specifications
Model: | RS25 (C25 N6) |
Rated Output: | 25 kW (Standby) |
Voltage: | 120/240V Single Phase |
Rated Amperage: | 104.2A |
Fuel Type: | Natural Gas / LP Vapor |
Sound Level: | 69 dB(A) at 23 ft |
Dimensions (LxWxH): | 72” x 34” x 45.5” |
Weight: | 1109 lbs (503 kg) |
Controller: | PowerCommand® 1.1 |
Starting Voltage: | 12V DC |
⛽ Fuel Consumption
Load | Natural Gas (ft³/hr) | LP Vapor (gal/hr) |
---|---|---|
25% | 123.8 | 1.4 |
50% | 185.7 | 2.1 |
75% | 247.6 | 2.8 |
100% | 309.5 | 3.5 |
💡 Engine & Control Highlights
- 2.4L naturally aspirated inline 4-cylinder engine
- Cast iron block with spin-on oil filter and oil drain extension
- Electronic governor (isochronous regulation)
- Cooling rated for up to 50°C (122°F) ambient temperatures
- 50 Amp battery charging alternator and 6A charger
🔌 Electrical System
- UL-certified single circuit breaker (right-side mounted)
- English display, right-side control panel
- PowerCommand® 1.1 with auto-shutdown & metering
📦 Included & Optional Accessories
- Included: Generator unit, aluminum enclosure, manuals, shipping pallet
- Available Add-ons: Remote displays (HMI211/HMI220), annunciators, maintenance kits, alternator heaters, sound upgrade kits, battery chargers
- Automatic Transfer Switches (sold separately, UL 1008 listed)
🛡️ Warranty & Support
The RS25 comes standard with a 2-year limited standby warranty. Extended warranties are available. Backed by Cummins’ nationwide dealer network, you’ll have access to expert support, installation help, and service resources wherever you are.
Download the Cummins RS25 25 Kw Generator Manual here
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🎥 Cummins RS25 Generator Overview


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