
Manufacturer’s range photograph; final enclosure and equipment are confirmed with your quotation.

FG Wilson FB
40 kVA prime
£7,860 + VAT, ex works
Best value for money. Delivery quoted separately.
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The FG Wilson FB40-4A provides 40 kVA prime power at 50 Hz using a Leyland H4G4DE40 engine and Leroy Somer alternator. Its acoustic enclosure and 85 litres fuel tank suit commercial and industrial power projects. GenMart can arrange supply, delivery and installation. CPCB IV+ is not UK/EU Stage V approval; destination and application requirements must be confirmed.
| Brand | FG Wilson |
| Range | FG Wilson FB |
| Engine make | Leyland |
| Model | FB40-4A |
| Standby power | Not published — confirm with quotation |
| Prime power | 40 kVA |
| Engine | Leyland H4G4DE40 |
| Alternator | Leroy Somer LSAP 42.3 F |
| Control panel | SEDEMAC GC1206 |
| Phase | Three phase |
| Enclosure | Silent acoustic canopy |
| Fuel | Diesel |
| Frequency | 50 Hz |
| Voltage | 415/230 V |
| Engine speed | 1,500 rpm |
| Emissions classification | CPCB IV+ |
| Displacement | 3.84 litres |
| Governor | Electronic A0 |
| Bore × stroke | 104 × 113 mm |
| Compression ratio | 16.5:1 |
| Alternator protection | IP23 |
| Alternator insulation | Class H/H |
| Voltage regulation | ±1% (published alternator specification) |
| Fuel tank capacity | 85 litres |
| Listed circuit breaker | 63 A |
| Power factor (datasheet) | 0.8 |
| Weight (datasheet) | 1200 kg |
| Dimensions L × W × H (datasheet) | 2490 × 1090 × 1397 mm |
| Noise at 75% load (datasheet) | <75 dBA at 1 m (ISO 8528) |
Published output is prime power; a separate standby rating is not provided. Confirm the final supplied configuration with your quotation.