The 250 kVA generator sits in the middle of the market: the standard choice for mid-rise buildings, schools, supermarkets, small factories and construction sites with a hoist. Here is what to check before you compare offers.
250 kVA generator: kW and amps
- Real power: 250 kVA × 0.8 power factor = 200 kW
- Current at 400 V, 3-phase: about 361 A per phase
- A 250 kW load needs 250 ÷ 0.8 ≈ 313 kVA, which means a 300 kVA generator, not a 250
Standby or prime: two kinds of "250 kVA"
On our datasheets the 250 kVA class comes in two flavours:
| Model | Engine | Standby / prime (kVA) |
|---|---|---|
| 4U-P225 | Perkins 1206A-E70TTAG2 | 250 / 225 |
| 4U-B230 | Baudouin 6M16G4D0/S | 250 / 230 |
| 4U-P250 | Perkins 1206A-E70TTAG3 | 275 / 250 |
| 4U-C250 | Cummins 6LTAA8.9-G2 | 270 / 250 |
| 4U-C250B | Cummins QSL9-G3 | 284 / 250 |
All are six-cylinder in-line engines at 1500 rpm, 50 Hz. For backup a few hours a year, a 250 kVA standby set is enough. For a site or building that runs on the generator every day, choose 250 kVA prime — the 270–284 kVA standby sets. See prime vs standby.
Fuel consumption of a 250 kVA generator
From the same datasheets:
- about 32–49 litres per hour at 75% load
- about 43–59 litres per hour at full prime load
The spread comes from the engine and its prime rating. Canopy base tanks run from about 380 to over 1,000 litres depending on the model — check the run time you need. Our generator fuel consumption chart covers every size.
Size and weight
A canopy 250 kVA set is about 3.3–4.4 m long, 1.2–1.6 m wide and 2.0–2.3 m high, and weighs roughly 2.9–3.3 tonnes. Leave clear space around it for cooling air and service, and plan the crane access before the slab is poured.
250 kVA generator price in the UAE: what decides it
We don't publish a single price because the offer depends on:
- Engine make and origin
- Alternator make and frame size
- Enclosure: open or silent canopy, and the noise level required
- Controller: AMF, or a synchronising controller for parallel sets
- Fuel tank size and any external tank
- ATS rating — a 250 kVA set usually pairs with a 400 A ATS panel
- Delivery, installation and commissioning
Each factor is explained in our guide to generator prices in the UAE, and the 250 kva generator price in UAE page lists the models in this size.
Is 250 kVA the right size?
Before buying, make a load list: running kW, the biggest motor and how it starts, and some headroom for growth. If the result sits between sizes, our standard generator sizes chart and the kVA calculator show the next step up or down.
Get a 250 kVA quotation
Tell us the load, whether the set is for standby or daily duty, and where it will stand. We will recommend the right engine and enclosure and send a detailed quotation.
