The Generator EngineEncyclopedia

Cummins C40N6 vs Generac RG03824

The Cummins C40N6 and Generac RG03824 are both natural gas generator engines in a similar power class. Both are rated at roughly 49 kVA. The table below compares their full specifications side by side.

SpecificationCummins C40N6Generac RG03824
Headline rating50 kVA48 kVA
Standby (50 Hz)
Prime (50 Hz)
Standby (60 Hz)40 kWe38 kWe
Prime (60 Hz)
Displacement2.4 L2.4 L
ConfigurationL4L4
Cylinders44
Rated speed1,800 RPM1,800 RPM
FuelNatural GasNatural Gas
CoolingLiquid-CooledLiquid-Cooled
EmissionsU.S. EPA StationaryU.S. EPA Stationary
Dry weight
OriginUnited StatesUnited States

Choosing between Cummins C40N6 and Generac RG03824

Use this comparison as an engineering shortlist, then confirm the complete generator package against load profile, voltage, 50/60 Hz frequency, duty class, emissions rules, cooling margin, altitude, ambient temperature, enclosure design, controller features, and alternator sizing. The Cummins C40N6 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.