FG Wilson PRO20-4 Stage V Diesel Generator – 20 kVA Rental Power Unit
Ensure reliable and efficient temporary power with the FG Wilson PRO20-4, a high-performance 20 kVA diesel generator engineered for demanding rental and site applications. Built to comply with EU Stage V emissions standards, this unit is ideal for use across the UK and Europe.
Key Features:
Prime Power Output: 20 kVA / 16 kW (50 Hz)
Engine: Durable Perkins 404J-22G
Alternator: High-quality Leroy Somer LL1114M
Voltage Range: 220–415V, 3-phase
Fuel Efficiency: Approx. 4 L/h at 75% load
Tank Capacity: 56 litres for extended operation
Compact Design: 1718 × 918 × 1300 mm, 735 kg
Noise-Reducing Canopy: Galvanized, weatherproof & sound-attenuated
Control System: Intuitive operator panel for easy monitoring and control
Built for Tough Environments:
Heavy-duty build quality ideal for construction, utilities, and events
10% overload capacity for 1 hour in every 12-hour cycle
Designed for continuous use with no hourly limitations
Warranty Coverage:
Prime Power: 1-year unlimited hours
Standby Use: 2-year/500-hour coverage
Technical Specifications
Power Output:
Prime: 20 kVA / 16 kW
Standby: 20 kVA / 16 kW
Engine:
Model: Perkins 404J-22G
Displacement: 2.2 litres
Bore x Stroke: 84 mm x 100 mm
Compression Ratio: 23:1
Governor Type: Mechanical
Alternator:
Model: Leroy Somer LL1114M
Excitation: SHUNT
Protection: IP23
Frequency: 50 Hz
Voltage Range: 220–415 V
Speed: 1500 RPM
Fuel Consumption: Approximately 4 L/h at 75% load
Fuel Tank Capacity: 56 litres
Emissions Compliance: EU Stage V / Tier IV Final
Weight: 735 kg
Dimensions (L × W × H): 1718 × 918 × 1300 mm.
Standard Features
Enclosure: Galvanized, sound-attenuated canopy designed to withstand harsh on-site conditions while minimizing noise.
Control Panel: Deep Sea DSE6320 Auto Mains (Utility) Failure Control Module with back-lit LCD screen and LED indicators.
Cooling System: Radiator with vertical air discharge, suitable for ambient temperatures up to 43°C.
Fuel System: Integrated 56-litre double-wall fuel tank providing approximately 25.4 hours of runtime at 75% load.
Mounting: Soft-mounted on a heavy-duty steel base frame with integral 110% spill containment.
Exhaust System: Integrated spark arresting silencer with flexible connectors.
The FG Wilson PRO20-4 diesel generator has a gross weight of 735 kg when filled with lubricating oil and coolant. When fully fuelled, the weight increases to 745 kg.
Trust FG Wilson for dependable power generation solutions. The PRO20-4 delivers low emissions, low noise, and long-lasting performance — making it the perfect choice for rental fleets, contractors, and critical backup scenarios.
We are the largest stockist of FG Wilson Genuine Parts in the UK and are equipped with state-of-the-art parts ordering software, Ensuring you have access to the right parts, At the right time with full warranty.
If parts are needed during Maintenance, Servicing or Repairs, Then Ensure only genuine parts are fitted. They are the only parts that are approved and warranted by FG Wilson, When buying all your parts from an authorised dealer like us at Mitchell Powersystems, You can guarantee you get Genuine Quality Reliable Parts Every time.
Genuine FG WILSON PRODUCTS
Mitchell Powersystems are an Authorized and Official Distributer of FG WILSON PARTS.