The Cummins Onan 12.5HDKCB-11506 Quiet Diesel Generator Set delivers heavy-duty mobile standby power engineered for commercial-grade recreational vehicles and luxury motorhomes. Built to manage extreme electrical loads during extended off-grid expeditions, this enclosed diesel system provides 12.5kW of continuous pure sine wave electricity with tight ±2% voltage regulation, easily supporting up to three 15,000 BTU RV air conditioning units.
Driven by a robust 3-cylinder inline vertical 1647cc liquid-cooled diesel engine operating at a stable 1800 RPM, the unit utilizes advanced microprocessor controls with real-time diagnostics and troubleshooting. Encased within a sound-insulated generator enclosure with a USDA Forest Service approved spark-arresting muffler and focalized vibration reduction, it maintains an ultra-quiet 68 dB(A) operation that meets strict National Park Service standards.
Key Features
- Cummins Onan RV QD 12500 High-Capacity Quiet Diesel Generator Architecture
- Clean, Pure Sine Wave Power with Precise ±2% Voltage & ±0.1% Frequency Regulation
- High Power Output Capacity Effortlessly Runs Up to Three 15,000 BTU AC Units
- Robust 3-Cylinder Vertical Inline 1647cc 4-Cycle Liquid-Cooled Diesel Engine
- Microprocessor-Based Controls with Integrated Diagnostics and Fault Troubleshooting
- Ultra-Quiet Operation via Focalized Vibration Reduction and Sound-Insulated Enclosure
- Meets National Park Service 60 dBA Sound Level Requirements at 50 Feet
- USDA Forest Service Approved Spark-Arresting Muffler for Enhanced Off-Road Safety
- Convenient Push-Button Electric Starting System with Low Oil Alert Protection
- Configured for 120/240V Single Phase Electrical Infrastructure with Digital Hour Meter
- Proudly Engineered and Made In USA (50-State Emissions Compliant)
- 3-Year Limited Consumer Warranty paired with a 90-Day Adjustment Policy
Specifications
| Brand | Cummins Onan |
|---|---|
| Model Number | 12.5HDKCB-11506 (RV QD 12500) |
| Series Name | Quiet Diesel Series |
| Product Type | RV Diesel Generator |
| Fuel Type | Diesel |
| Rated Power & Amps | 12.5 kW (12,500 Watts) / 52 A |
| Voltage & Phase | 120/240V / Single Phase (60Hz) |
| A/C Load Capacity | Supports up to (3) 15,000 BTU AC Units |
| Enclosure Construction | Sound-Insulated Cabinet with Enclosed Muffler |
| Alternator Type | Brushed (AVR Equipped) |
| Engine Specifications | 3-Cylinder Vertical Inline 1647cc (Liquid Cooled) |
| Engine RPM & Starter | 1800 RPM / Electric Start |
| Fuel Consumption | 0.48 gallons per hour @ 50% Load |
| Safety Protections | Low Oil Alert/Shutdown, Microprocessor Diagnostics, Hour Meter |
| Noise Performance | 68 dB(A) / Meets NPS 60 dBA @ 50ft Requirement |
| Compliance | U.S. EPA Approved & California CARB Compliant |
| Dimensions & Weight | 41.4L x 24.5W x 27H inches / 770 lbs. |
| Warranty | 3-Year Limited Warranty + 90-Day Adjustment Policy |