Your partner in all questions of power supply

The company Gustav Klein is certified according to DIN EN ISO 14001:2015 and DIN EN ISO 9001:2015. Delivering a high standard of quality is our top priority.

Our expertise and experience

For over seven decades

Gustav Klein has been producing power supplies for industrial applications for 75 years. We have now delivered over 400,000 systems to 105 countries around the world. Innovative technology and an outstanding level of quality ensure a long service life and high availability. Thanks to our many years of experience and the flexibility of a high level of in-house value creation, we can also implement complex project-specific power supply solutions. Through the continuous development of our product portfolio, truly secure systems will also be available in the future.

Our many years of experience with various electrical storage media enable us to open up new markets for a wide range of applications, such as test and simulation equipment.

Especially for first- and second-life batteries of electric vehicles, our new bidirectional converters are an ideal, proven solution.

75th company anniversary

Gustav Klein celebrates its 75th anniversary with its 250 employees.

75th company anniversary

2023

New production on 2,000 sqm

Gustav Klein expands the production area in Schongau to 2000 sqm.

New production on 2,000 sqm

2018

First power electronics for
Large-scale storage > 10 MW

The performance of battery-based energy storage systems for grid support continued to grow, and with it the performance of Gustav Klein battery inverters.

First power electronics for
Large-scale storage > 10 MW

2016

First multichannel test system
250 kW 4 x 800 V 800 A

In addition to the single-channel test systems, the first multi-channel test systems were developed, manufactured and delivered in 2012.

First multichannel test system
250 kW 4 x 800 V 800 A

2012

1MW grid simulation

The Gustav Klein grid simulators have been steadily developed further and reached outputs of 1 MW for the first time in 2011.

1MW grid simulation

2011

Battery simulation 10 - 1000 V 800 kW

Gustav Klein recognised the e-mobility trend early on and developed and supplied the first battery simulators and battery testers.

Battery simulation 10 - 1000 V 800 kW

2007

Change of ownership

Günther Stensitzki acquires the company from the Klein family and continues to run the Gustav Klein company as sole owner.

Change of ownership

2007

Touch screen

The operation and monitoring of the various systems were further simplified by the introduction of touch screens.

Touch screen

2000

First grid support with battery storage

Supply of battery inverters for grid support to Bayernwerke (250 kVA)

First grid support with battery storage

1997

IGBT UPS

Bi-directionality has been added to the UPS systems to enable uncomplicated battery tests to be carried out here as well.

IGBT UPS

1996

Special back-up power supply systems (BEV)

In 1987, the first bidirectional systems were manufactured with the purpose of testing batteries of UPS systems by feeding energy back into the grid.

Special back-up power supply systems (BEV)

1987

Foundation of GK Inzing

Against the background of excellent business and friendly contacts in Austria, a branch office was founded there.

Foundation of GK Inzing

1969

Product portfolio

The product portfolio included transformers, voltage stabilisers, stabilisers for meter testing equipment, rectifiers, inverters and power supply systems for television studio cars.

Product portfolio

From 1948

Foundation of GK Schongau

Gustav Klein founded a company in Schongau to manufacture transformers and power supplies.

Foundation of GK Schongau

1948

Until 1948

The founder Gustav Klein owned a capacitor factory in his old Bohemian homeland with over 200 employees. The Klein family settled in Schongau after the expulsion.

Until 1948

Shaping the future

Newly developed and enhanced products

Since 1948, the beginnings of the Gustav Klein company, new and further developments have been based on the company’s own patents. In 1969, a branch factory was founded in Austria, the main export country at the time, which is now based in Inzing, west of Innsbruck. The complete range of units is manufactured there in parallel to the main factory. A small group of employees has grown into a company with 240 employees.

Today, not only UPS systems and inverters with system outputs of up to 1.5 MVA are available, but also high-power test and simulation systems 650 kW single block (can be connected in parallel) with a nominal voltage of up to 1000 V DC or AC. Gustav Klein also supplies intelligent power electronics for high-performance energy storage systems, consisting of 500 kW blocks that can be expanded to any storage capacity.

High quality and reliability

Comprehensive professional competence

The high quality and reliability of the power supplies, which have now been manufactured for over 75 years, is demonstrated by their use in telecommunications, railways, power stations, air traffic control, hospitals and industry. Many years of experience, combined with an extensive range of equipment, offer you the guarantee of comprehensive professional competence and the technically and economically optimal solution to your problems as well.

References

Service and quality

Based on our strong development team and our many years of experience, we will continue to grow through a combination of proven products and new developments. Especially through cooperations with strong medium-sized partners, we see a growing market for our products in the future.