Explore our Product Lines


The HighPROTEC line offers an outstanding solution for reliable medium voltage protection of distribution, generator, substation and motor. The innovative PC tool minimizes commissioning and training costs. The high degree of proven reliability guaranties high availability of your electrical grid and equipment. Each model type has the flexibility to handle the many variations that can be encountered in a specific application. The "All Inclusive Concept" of HighPROTEC devices offers you a complete portfolio of protection functions, plus the operating and setting software Smart view and a tool for analyzing disturbance records, and all that without any hidden costs or extra fees.

New: HighPROTEC Release 3.7, KEMA Type Test

The KEMA has certified that all HighPROTEC devices are compliant with all requirements of IEC 60255-1:2009.

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HighTECH Line

The modular protection devices from SEG Electronics for low voltage, medium voltage, and lower high voltage level have numerous and complex protection functions. The protection range includes basic time overcurrent protection, machine protection and high-grade differential protection.

In addition to relays with single protection functions, available are also multi-function protection. Devices are designed for door mounting, either in separate housings or in 19“ racks. For back panel mounting, an adapter is also available.

Thanks to our “plug-in” technology with automatic short-circuit mechanism for the current inputs, these relays can be changed during operation. LEDs and an alpha-numerical display show clear text indication of measuring, setting and fault values, and allow intuitive operation. Coupling to your SCADA system is achieved via the standardized interface.

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Professional Line

The digital single-function or multi-function relays from SEG Electronics provide all common protection functions for low and medium voltage applications and are designed for DIN rail mounting.

Rated voltage and frequency can be set by means of DIP switches; pick-up values and tripping delays via potentiometers.

The wide-range power supply for AC and DC make the relays universal.

An optionally available interface adapter enables the devices to communicate with the Windows ® PC software Smart view.

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WI Line

All relays from the WI Line are self-powered time overcurrent relays, which means they take their energy from the current transformers.

Since they do not require auxiliary power, the WI Line relays are well suited for use in self-sustaining transfer and distribution stations, local grids, and ring-main-units.

Tripping characteristics range from two-stage, independent (DEFT) and dependent (INV) time-overcurrent protection, up to special characteristic curves. As further options, we offer some relays with integrated earth fault protection.

SEG Electronics has also developed serial products, which match nearly any circuit breaker commonly available on the market. The electronic parts of the relays are completely sealed in, making the relays resistant to even the very worst environmental influences.

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Basic Line

SEG Electronics supervision relays for low voltage applications are equipped with a precise micro-controller and designed for DIN-rail mounting. They are easy to operate and simplify commissioning. This is advanced technology at a low price.

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SEG Setting and Operating Software - Smart view

Smart view is our parameter setting and evaluation software. It is intended to be connected with our protection devices, so that these can be set up using a Windows PC.

Smart view can be downloaded and installed free of charge: https://docs.segelectronics.de/smart_view

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We offer a range of accessories complementing our protection devices e.g. current transformer and mechanical flag indicators.

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