Cummins QSK38-G5 vs Perkins 5012AC-E46TAG1
Compare Cummins QSK38-G5 and Perkins 5012AC-E46TAG1 by recorded output, operating duty, frequency and engine specifications. Their listed displacements are 37.7 L and 46 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 QSK38-G5 | Perkins 5012AC-E46TAG1 |
|---|---|---|
| Standby electrical (50 Hz) | 1,121 kWe | 1,136 kWe |
| Prime electrical (50 Hz) | 1,020 kWe | 1,036 kWe |
| Standby electrical (60 Hz) | 1,162 kWe | Not listed |
| Prime electrical (60 Hz) | 969 kWe | Not listed |
| Displacement | 37.7 L | 46 L |
| Configuration | V12 | V12 |
| Cylinders | 12 | 12 |
| Recorded engine speed | 1,500 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Recorded emissions classification | U.S. EPA Tier 2 | Euro Stage II / China National Stage III |
| Dry weight | Not listed | Not listed |
| Origin | United States | United Kingdom |
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 QSK38-G5: Review the model record and available supporting documents
Perkins 5012AC-E46TAG1: Review the model record and available supporting documents
Choosing between Cummins QSK38-G5 and Perkins 5012AC-E46TAG1
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.