Head to head
Atlas Copco QAS 45 vs Pramac GRW100I/S5
The Atlas Copco QAS 45 is a silenced diesel generator, 43,5 kva prime power. The Pramac GRW100I/S5 is a stage v rental generator set, 100.0 kva prime power.
Last reviewed 6 October 2026
Specifications side by side
| Atlas Copco QAS 45 | Pramac GRW100I/S5 | |
|---|---|---|
| Prime power PRP | 43,5 / 35 (kVA / kW) | 100.0 kVA |
| Emergency standby power ESP | 47,6 / 38 (kVA / kW) | 104.3 kVA |
| Fuel tank | 92 / 257 (l) | - |
| Noise level | 62 (LpA at 7m, dB(A)) | - |
| Weight | 985 / 1065 (dry / wet, kg) | - |
| Voltage | - | 400/230 (V) |
| Engine | - | FPT |
| Emission stage | - | Stage V |
Sources: Atlas Copco QAS 45, Pramac GRW100I/S5. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the QAS 45 if...
A mid-size 50Hz site generator for temporary power on larger sites and events, from the Atlas Copco QAS range that the maker designs for rental use. The brochure lists two fuel tank capacities for longer runs between refuels.
Full QAS 45 specifications →Buy or hire the GRW100I/S5 if...
Rental-series generator set for hire fleets, events, construction sites and city centre works needing temporary three-phase power.
Full GRW100I/S5 specifications →Common questions
What is the difference between the Atlas Copco QAS 45 and the Pramac GRW100I/S5?
The Atlas Copco QAS 45 is a silenced diesel generator, 43,5 kVA prime power; the Pramac GRW100I/S5 is a stage V rental generator set, 100.0 kVA prime power.
GetBrent is an independent directory and is not a dealer for, nor affiliated with, either manufacturer. Model and brand names are the trademarks of their owners.