Cummins Onan 12.5 kW Diesel RV Generator — 12.5HDKCB11506
12.5 kW (12,500 W), 120/240 V, 60 Hz, 104.0 / 52.0 Amps, diesel, 50 A 2-pole circuit breaker, runs three 15,000 BTU rooftop air conditioners, 70 dB(A) at 10 ft, half load, liquid-cooled 3-cylinder diesel, model 12.5HDKCB-11506
The Onan Quiet Diesel series draws from the coach's own diesel tank, so there is no second fuel to carry and no LP bottle to run dry — the reason it is the standard generator on diesel-pusher Class A motorhomes. A liquid-cooled engine under a sound-insulating housing runs at constant speed on a vibration-isolated mount, and the set is sized to carry multiple rooftop air conditioners at once.
Features and benefits
- Runs off the coach's diesel supply. One fuel for the chassis and the generator.
- Liquid-cooled diesel. Built for long run hours and high ambient temperatures, not occasional use.
- Sound-insulating housing and isolated mounting. Computer-controlled constant-speed operation keeps the note steady rather than surging with load.
- Pure sine wave output. Safe for sensitive electronics throughout the coach.
- Self-diagnostics. Fault codes reported at the control rather than diagnosed by guesswork.
- Serviceable. Designed for access to filters and routine maintenance items in an RV bay.
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