Safe switching and protection of high voltage electrical networks

Products 30. June 2026 by Ricardo Pimenta - Reading Time 3 min.

Electrification is driving increased ingenuity in mobility: While high-voltage batteries are increasingly being used in cars, trucks, buses, trains and ships, stationary storage systems are more commonly used, for example in solar parks, AI data centres and telecommunications systems. Every application has different demands on switching and protection components – from trip time, robustness and resettability to cost and system complexity.

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The new 8365-F circuit breaker

Blog post 13. March 2026 by Sebastian Greck - Reading Time 3 min.

In today’s power supply for servers, machines and other technical equipment, AC voltages at typically 230 V or three-phase systems still dominate. This architecture has evolved over time but is gradually reaching its limits. Due to the increasing power demand, new load architectures and the desire to improve efficiency, there is growing interest in DC networks operating at higher [...]

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The new era of high-voltage switching

Blog post 04. November 2025 by Philipp Teepe Ricardo Pimenta - Reading Time 2 min.

Reliable switching is essential for safety and availability in high-voltage systems. The HVR10 high-voltage relay from E-T-A combines high switch-off performance, robustness and maintenance-free operation in a compact design. This makes it the ideal solution for the most demanding high-voltage applications.

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Compact, powerful, intelligent

Products 11. July 2025 by Philipp Teepe - Reading Time 4 min.

Efficiency, sustainability and digitisation are key topics in the utility vehicle industry and are changing on-board electrical system requirements: Advanced electrical components for sophisticated systems in modern commercial vehicles have become essential.

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Arc-free switching at high voltages

Products 23. February 2024 by Ricardo Pimenta - Reading Time 2 min.

An increasing number of comfort functions in vehicles must be supplied with increased power. The obvious solution is to enable more power by increasing the operating voltage. The flowing current remains unchanged so that power loss, cable cross-sections and cooling systems must not be adapted.

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Safe power distribution for voltages up to DC 400 V

Topics & Trends 23. February 2024 by Michael Bindner - Reading Time 2 min.

Higher voltages for the active technology supply in the telecommunication technology area have been discussed for years. While existing systems are normally not retrofitted due to the high costs involved, this option is quite popular for newly built control rooms and data centres.

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All-in-one solution for the HV battery

Products 18. October 2023 by Ricardo Pimenta - Reading Time 3 min.

Electrical cars, buses and delivery vehicles are a common sight today. However, new solutions are needed to make them even more desirable and economical and appropriate for other applications, such as long-distance trucks and coaches.

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The future is DC

Topics & Trends 13. February 2023 by Christian Hofmann - Reading Time 2 min.

Higher DC voltages are the next technological evolutionary stage in the industrial sector. But these networks place completely new demands on overcurrent protection. We are already working on solutions for these future challenges.

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New ways in high voltage protection

Topics & Trends 27. July 2022 by Philipp Teepe - Reading Time 3 min.

Electronic vehicles are already a mass market. Relatively long charging times, expensive batteries and rather low ranges are still critical challenges, but are being improved quickly. We also support the development of sustainable mobility and provide some insight into current and future high-voltage battery switching and protection concepts.

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Pure Power

Blog post 07. July 2020 by Dietmar Koops - Reading Time 3 min.

Modern utility vehicles need modern components in their on-board electrical systems. Trends such as efficiency, environmental-friendliness and digitisation are driving the commercial vehicle industry and have impacted on-board electrical system requirements. E-T-A is constantly developing components with this in mind and offers solutions in the field of power and high-voltage [...]

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