Head to head
Atlas Copco QAS 20 vs Stephill SSDP60V
The Atlas Copco QAS 20 is a silenced diesel generator, 17,5 kva prime power. The Stephill SSDP60V is a 56 kva super silent diesel generator with perkins engine.
Last reviewed 6 October 2026
Specifications side by side
| Atlas Copco QAS 20 | Stephill SSDP60V | |
|---|---|---|
| Fuel tank | 115 litres | 360 Litres |
| Noise level | 60 (LpA at 7m, dB(A)) | 65dBA @ 7 metres |
| Weight | 696 / 795 (dry / wet, kg) | 1470 KG |
| Prime power PRP | 17,5 / 14 (kVA / kW) | - |
| Emergency standby power ESP | 18,7 / 15 (kVA / kW) | - |
| Output | - | 56.0kVA / 44.8kW |
| Engine | - | Perkins 904J-E28TA |
Sources: Atlas Copco QAS 20, Stephill SSDP60V. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the QAS 20 if...
A small 50Hz site generator for powering tools, welfare cabins and small sites, in the Atlas Copco QAS range that the maker designs for rental use. Its Kubota engine and 60 dB(A) sound pressure level at 7m suit work in built-up areas.
Full QAS 20 specifications →Buy or hire the SSDP60V if...
Three-phase generator for hire fleets, construction, events, utilities and standby use. Large bunded tank gives long run times between refuels.
Full SSDP60V specifications →Common questions
What is the difference between the Atlas Copco QAS 20 and the Stephill SSDP60V?
The Atlas Copco QAS 20 is a silenced diesel generator, 17,5 kVA prime power; the Stephill SSDP60V is a 56 kVA super silent diesel generator with Perkins engine.
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