Who we are

SEG Electronics GmbH develops and manufactures intelligent protection devices for power generation and distribution. With our solutions and products, we shape tomorrow’s intelligent energy supply and contribute to the energy transition.

Our portfolio of easy to operate, while robust and reliable protection relays can be used for the electrical protection of generators, transformers, motors, cables, and overhead lines, as well as busbars.

Whether standardized products or customer-specific developments – the solutions provided by our employees have been top of class all over the world for more than 50 years.

Protection made simple.

Great Technology

SEG was founded in 1969 has been in the protection relay business for over 50 years. We are your trusted partner who provides high quality parts and services. You can rest easy knowing you’ve selected SEG as your protection relay.

You can use the protection function codes (ANSI) to compare SEG products with competitive products. This allows you to simplify your selection process by focusing on key protection functions, open standard communication protocols, and certifications that ensure quality standards.

Our products are made for global solutions. The HighPROTEC line supports the official languages of 137 countries, and it’s designed to both ANSI and IEC standards.

SEG has designed and certified its products according IEC 60255‑1. In addition, marine certifications are available on specific models. HighPROTEC covers multiple grid codes, for example, the current G59, IEEE 1547 and VDE 4110. And you can count on SEG to stay on top of the constantly evolving grid standards around the world.

Save Cost

SEG is an independent manufacturer which offers versatile product lines to help improve your competitiveness and productivity.

Our products will reduce cost by providing standardized hardware and software packages that allow you to select the perfect mix of secure communication ports, digital inputs and outputs, and sensitive Earth Current measurement options.

Excellent software solutions as our configuration software Smart view come at no extra cost.

Save Cost

SEG is an independent manufacturer which offers versatile product lines to help improve your competitiveness and productivity.

Our products will reduce cost by providing standardized hardware and software packages that allow you to select the perfect mix of secure communication ports, digital inputs and outputs, and sensitive Earth Current measurement options.

Excellent software solutions as our configuration software Smart view come at no extra cost.

Save time

We want you to save time and be as efficient as possible. Product selection via ANSI code requirements, direct access to drawing and wiring diagrams via our website and easy order process are designed with our customers rare time in mind. Interconnection should be easy and quick, so we support the European and North American interconnection standards via the included software.

For sure, this approach continues with our service. For quick access, all our products provide a QR-Code so that field service engineers can get direct access to any required support tools, such as quick start and troubleshooting guides as well as manuals.

Company history of SEG

1969 - FOUNDATION OF THE SEG

SEG was founded as Schaltanlagen-Elektronikgeräte GmbH in Krefeld (Germany).

1974 - MOVE TO KEMPEN

To meet increasing customer demand, SEG moved to a larger plant in Kempen, Germany.

1985 - AvK ACQUISITION

SEG merges with generator manufacturer AvK® to form AvK|SEG.

1988 - FIRST SELF-POWERED RELAY

The innovation of the first self-powered relay WI1-3 is disrupting the market of Ring Main Units and sets a first milestone towards smart grids.

1990 - FIRST NUMERICAL MULTI-FUNCTION RELAY

With HighTech Line the first numerical multi-function relay product line is introduced into the market.

1994 - PROFESSIONAL LINE

SEG introduces the Professional Line – a product range of relays that are easy to configure. The ability to set-up a relay without tools or software coins the phrase that SEG is “Commissioner’s Best Friend”.

2001 - ACQUISITION BY CUMMINS

AvK SEG and NEWAGE merge to form a joint group of companies (newage-avkseg). The portfolio ranges from protection devices to converters for wind turbines and synchronous generators under the ownership of CUMMINS.

2006 - ACQUISITION BY WOODWARD

SEG becomes a member of energy and aerospace specialist Woodward Inc. gaining access to a worldwide distribution network and a large base of OEM customers.

2008 - HIGHPROTEC PRODUCTLINE

The HighPROTEC multifunction device series meets the highest protection requirements. All required protection functions are included in the individual devices. The focus of the device development is on simple, intuitive operation.

2020 - ACQUISITION BY AURELIUS

As a member of the Aurelius Group, SEG once again becomes an independent brand and can now react much more agilely to the dynamics in the energy market.

2022 - NEXT GENERATION WIC SELF-POWERED RELAYS

With the introduction of the new WIC line, SEG introduces the next generation of self-powered relays which are unbeatable in speed. With the DiggiMEC, the WICs can easily be operated on-site, as the display visualizes measuring values and allows programming of the relay.