Cummins QSB7G3 vs SDEC 6HTAA7.2-G46
Compare Cummins QSB7G3 and SDEC 6HTAA7.2-G46 by recorded output, operating duty, frequency and engine specifications. Their listed displacements are 6.7 L and 7.2 L, respectively. Start with the same duty and frequency, then check each model’s source and package conditions. These records alone do not establish interchangeability.
| Specification | Cummins QSB7G3 | SDEC 6HTAA7.2-G46 |
|---|---|---|
| Standby electrical (50 Hz) | 140 kWe | 140 kWe |
| Prime electrical (50 Hz) | 120 kWe | 126 kWe |
| Standby electrical (60 Hz) | 150 kWe | Not listed |
| Prime electrical (60 Hz) | 136 kWe | Not listed |
| Other recorded mechanical power (duty unspecified) | 186 kW | Not listed |
| Displacement | 6.7 L | 7.2 L |
| Configuration | L6 | L6 |
| Cylinders | 6 | 6 |
| Recorded engine speed | Not listed | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Recorded emissions classification | U.S. EPA Tier 3 / EU Stage IIIA / China III | China National Stage IV / Unregulated |
| Dry weight | Not listed | Not listed |
| Origin | United States / United Kingdom | China |
Compare matching ratings
Read across a row to compare the same operating duty and frequency. kWe is electrical output; mechanical kW is power at the engine shaft. kVA is apparent electrical power and is shown only when kWe is missing, without converting it. “Not listed” means the record lacks that rating, not zero output. Continuous and prime duties are kept separate. Check source documents, units and site conditions before comparing values.
An emissions classification in the catalog is not proof of certification for your engine or installation. Confirm the exact model, applicable documents and generator configuration.
Cummins QSB7G3: Review the model record and available supporting documents
SDEC 6HTAA7.2-G46: Review the model record and available supporting documents
Choosing between Cummins QSB7G3 and SDEC 6HTAA7.2-G46
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.