Onis Visa FOX and BiGFOX Diesel Generators: compact series from 9 to 65 kVA for construction sites and backup power

The Onis Visa FOX diesel generator range is the most compact version of the industrial series, with power outputs from 9 to 65 kVA at 50 or 60 Hz. Its combination of compact size, maximum noise reduction and sturdy construction makes it the ideal portable generator for construction sites as well as a reliable home backup power supply, available in both mobile and stationary configurations. The FOX range delivers dependable backup power during grid outages, keeping systems and equipment fully operational. It is also widely used as an off-grid power source in the telecommunications sector, supplying remote BTS stations and mountain refuge installations. Thanks to a comprehensive accessories catalogue enabling high levels of customisation, the FOX and BiGFOX generating sets perform reliably across all sectors and extreme weather conditions. The optimised footprint allows full machine batches to be shipped in standard 40' containers, even with oversized fuel tanks fitted.

Standard Equipment

1. Industrial diesel engine in generating set configuration
2. Industrial brushless alternator with AVR (automatic voltage regulator)
3. Control panel, circuit breaker and cables factory-mounted on board
4. Soundproof canopy in galvanised steel with powder-coated paint finish
5. Compact steel baseframe with drip-tray retention basin, 50 L fuel tank with electronic level sensor and provisions for external auxiliary tank connections
6. Semi-residential exhaust silencer with rain cap
7. High-damping anti-vibration mounts between engine/alternator and baseframe
8. Engine oil extraction pump and fuel pre-filter decanter
9. Four-point lifting eyes on all sides for safe handling on construction sites
10. Factory test certificate, operation manuals and electrical diagrams included
11. Global after-sales service and dedicated Onis Visa technical support

For full technical specifications, download the FOX diesel generator data sheet.

Key Features of the FOX Range

• Compact and sturdy design: fits any construction site or residential backup installation
• Maximum noise reduction: soundproof canopy supplied as standard for low-noise operation
• Complete access to main components for fast on-site maintenance
• Stackable in a 40' shipping container – optimised for logistics and batch delivery
• FOX: up to 46 units per 40' HC container
• BiGFOX: up to 24 units (Deutz engine) per container

Distinctive options available on request:

• Separate oversized fuel tank for extended autonomy in remote or off-grid sites
• Oversized fuel tanks available in multiple capacities on request