ONIS VISA Power Generators & Motorpumps

Visa SpA is a company dedicated on design, production, sales and rental
of generating sets, motor pumps and power solutions.


With star the start of each of the three phases is connected together. Connections are taken from the ends of the three phases to give the three phases
Star symbol voltage


With Delta the starts and ends of the phases are connected. The end of phase 1 is connected to the start of phase 2, the end of phase 2 to the start of phase 3, and the end of phase 3 to the start of phase 1. Connections are taken from the three start-end points to give the three phases.
Delta symbol voltage

Company profile

Visa Spa is a leading Italian company that has been successfully present in the market since 1960, projecting and manufacturing highly technological generating sets and power stations. With its network currently present in more than 60 countries in the world, Visa SpA offers the most suitable solutions with a high standard of quality and technology in many areas and countries. "ONIS VISA" gensets and power stations, ranging from 9.0 to 3.000 kVA, are completely manufactured in Italy and offer the best technological and quality features. Thanks to a research and development team of engineers, who are completely dedicated to projecting customized solutions and developing special and sophisticated projects for more complex applications, Visa SpA can support its clients assuring the highest quality solutions.

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Competence sectors

Visa SpA provides high-tech solutions that can be tailored to all situations and sectors: from telecommunications to construction and engineering, industry, as well as hospitals, retail and entertainment, just to name a few. Beside the complete standard range, Visa SpA manages to offer more sophisticated generating sets for more complex applications. Onis Visa generators, with their many variants, are among the most versatile and complete in the market, competing with a world that is increasingly more orientated towards electricity generation.
Data Centers Generators img

In an increasingly virtual world where exchange of critical information is getting more and more important, data centers demand an extremely reliable and constant...

Thanks to our experience and continuous research targeted towards technological innovation, Visa SpA offers solutions that are suitable for every requirement, also...

Industry and Services |  Onis Visa Generators

Visa SpA provides reliable and high-performance gensets and energy solutions. In manufacturing plants, even a small power outage could lead to hours of costly...

Telecom |  Onis Visa Generators
With over 50 years of experience in the energy market, Visa SpA offers a range of products designed to meet the needs of the Telecommunication sector, one of the most...

Providing continuous energy is a critical factor, an essential condition in every production process but it becomes vitally important within hospitals and healthcare...

Defence and Civil Aid |  Onis Visa Generators

The Onis Visa Gensets for military use are designed to meet the requirements of forces operating in harsh environments and built to a very demanding specification....

Tourism and Big Events |  Onis Visa Generators

Recent severe weather events have resulted in serious hurricanes, tropical storms, heavy snowfalls, strong hurricane-force winds and widespread storm surges and...

Large Scale Retail |  Onis Visa Generators

Businesses lose money when they shut down during a blackout. Even a small power failure could lead to hours of costly downtime. Considering the impact of significant...

Latest products

Onis Visa range of products has grown in order to provide an answer to all market requirements; it offers a comprehensive range of quality-assured, versatile and high-tech energy solutions which can be tailored to all situations. Beside high-quality generating sets, also different types of control panels, accessories and spare-parts are available, in standard or customized versions.
The GALAXY PLUS gen set range offers a wide choice of engines ranging from 200.0 to 1000.0 kVA at 50 or 60 Hz. The main features of the PLUS range are: GV-type base-frame acting as a watertight basin for any leaking liquid...
cricket generating sets
Developed as a response to the need of a product that focuses on the essential necessities, it is easy to install, with an efficient cost/quality ratio and particularly suited for hostile weather conditions. One of its main innovation is the wide stackability capacity and measurement optimisation to significantly reduce the shipping costs
Advanced single gen-set controller for stand-by and prime power applications. Direct communication with EFI engines, total remote monitoring and control, easy to install, configure and use, wide range of communication capabilities, connection via RS232, RS485, CAN and on board USB..

ONIS VISA In Sync 200, a new paralleling genset controller equipped with a 4” display b/n high contrast. The intelligent electronic control panel ONIS VISA InteliGen 200 is suitable for Onis Visa generating sets: it is a highly flexible, intuitive and scalable solution for generators parallel systems.

Other sectors

Visa SpA also provides services and products in sectors others than standard electricity generation, such as rental and water, through specific divisions and trademarks. Thanks to that production diversification, Visa SpA has managed to acquire an important know-how in different areas, giving way to new ideas and project development.


Visa Rent®, providing a fleet of 300 recently assembled, sound-attenuated generators, offers a wide range of flexible solutions for the international markets. The units are equipped with synch panels that can be paralleled to reach up to 30 MW. All the gensets are fitted with safety features that comply with the current regulations. In addition to the standard versions, Visa Rent provides units with additional fuel tanks to grant high autonomy, special voltages and frequencies, transformers, resistive loads and power cables for connections.



The recently renewed and evolving Nettuno® Water Division is the result of over 30 years of experience in the irrigation sector manufacturing high quality industrial and agricultural motor pumps and hose reels. Motor pump units for irrigation and pumping of water or fluids can be customized and suited to any liquid or fluid handling needs, even those with solid parts in suspension. Different pumps and technologies are available according to the types of application.


CALL:+39 0422 5093
Valmec has been manufacturing metal components for industrial machinery and equipment since 1981. Over the years, it has specialized in supplying metal frames for tooling machines, switch cabinets and sound attenuating canopies for air compressors and gensets. The range of enclosures developed meets the most stringent market requirements in terms of noise reduction.


CALL:+39 0422 509 411
Meteor® is specialised in the manufacturing and distribution of sound-attenuation and noise absorption products. A wide range is always available: ashlar, pyramid and smooth types coupled with lead material and charged rubber. These products are suited for sound attenuation and noise absorption in countless applications: industrial, construction, residential and building renovation, cruise and navy shipbuilding, public transportation and automotive.

Latest news

The International Motor Days is coming to Cortina d’Ampezzo, three days completely dedicated to challenges and shows granting high level emotions for all those who are passionate about motors.


The 2021-2022 winter season appoints Cortina d’Ampezzo once more as the great international player thanks to the Snowboard World Cup and to the Ski World Cup!


A new remarkable project can be added to the Visa SpA supplies in Middle East Area. A primary company for Water treatment selected Onis Visa product to supply its plant.



We recently arranged a special application: two units of machines destined to supply the gondola lift plant in Colfosco (BZ), in the Dolomites in case of any power shortage or failure to guarantee the regular operation as well as to allow the safe evacuation of people.



The pharmaceutical and health care sector is one of the areas in which Visa Spa has been specializing for quite a long time.


In a so interconnected world, Visa offers a product specifically created for those who live at high speed, designed for telecommunications and developed adhering to the current international standards to meet the needs of the people who operate in this sector day by day.


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VISA S.p.A. numbers

infografica 2020