Surge protection and lightning protection

Surge protection refers to the protection of systems and electrical devices against excessively high voltage peaks caused by switching operations and lightning strikes. An effective lightning protection strategy combines internal and external lightning protection. Protect the power supplies, data, and signals in your system. Use the reliable surge protection solutions available in our various product ranges as part of your internal lightning protection strategy.

Your advantages

Protection for all common applications and signals with the complete product portfolio
Versatile fields of application – designs and connection technologies for every application
Space-saving and inexpensive installation, thanks to the slim design
Know what’s happening in advance with cloud-based monitoring or predictive testing of pluggable protective devices

New products

Type 1+2+3 combined lightning current and surge arrester with narrow overall width

Type 1+2+3 combined lightning current and surge arrester – for universal use in the unmetered area

TERMITRAB complete – protection for four conductors or two pairs

Surge protection type 1+2+3 combined lightning current and surge arrester

High performance in a narrow overall width

The non-pluggable type 1 lightning current arrester, with four HP (72 mm width) for 230 V AC installations and a maximum discharge current of 25 kA, meets high surge protection requirements in a compact design with basic functions. It uses new, carbon-based triggered spark gap technology.

Main features

Half the overall width, twice the space
Tested in accordance with IEC standard T1+T2+T3
Available with remote signaling
Can be used up to 3,000 m above mean sea level

Your benefits

More flexibility in the control cabinet thanks to the slim design
Robust high-performance spark gap technology for demanding applications, e.g., in telecommunications systems
Integration of the SPD into the internal system monitoring via remote indication contact

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Surge protection type 1+2+3 combined lightning current and surge arrester

For universal use in the unmetered area

The DIN-rail mountable type 1+2+3 combined lightning current and surge arrester meets the highest lightning protection requirements in accordance with category III/IV. It can be installed flexibly, especially in the unmetered area, due to its compact design.

Main features

Tested in accordance with IEC standard T1 + T2 + T3
Combined lightning current and surge arrester free of leakage current
Can be used at altitudes up to 3,000 m
Available with remote signaling

Your benefits

Installation in the unmetered area due to spark gap technology free of leakage current
Integration of the SPD into the internal system monitoring via remote indication contact
More space for additional components in the control cabinet thanks to a slim design

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Surge protection for MCR technology

Protection for four conductors or two pairs

The product range of TERMITRAB complete has been expanded to include the compact surge protective devices for four- and two-wire applications in measurement and control technology.

Main features

Space savings of 50%
Tool-free maintenance
Mechanical status indicator on the device
Optional remote signaling capability

Your benefits

Efficient use of space with the narrowest pluggable surge protection for four conductors or two pairs
Easy function monitoring: On site or optionally via remote signaling, with optical monitoring, without additional effort
Tool-free maintenance through simple insertion and removal of the surge protection module

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E-paper – Surge protection

Protection for high system availability

Our portfolio of surge protection includes the right solution for almost all applications for an uninterruptible power supply and reliable data transmission.

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Portfolio – surge protection for power supply, MCR technology, data, and antenna technology

Surge protection fields of application

Protective circuit principle and protection concept

You should plan a protection concept for lightning and surge protection so that all cables, devices, and systems are protected.

The protective circuit principle is easy to illustrate:
Draw an imaginary circle around the object you want to protect. Surge protective devices must be installed at all points where cables intersect this circle. This ensures that the area within the protective circuit is protected in such a way that conducted overvoltages are prevented.

When planning the protection concept, consider the following areas of application:

Power supply
Measurement and control technology
Information technology
Transmitters and receivers

An effective protective circuit helps ensure seamless surge protection.

Surge protection standards

When it comes to surge protection, which standards must be observed?

National and international standards provide a guide to establishing a lightning and surge protection concept as well as the design of the individual protective devices. They differ depending on region and field of application. The overarching standard is lightning protection standard IEC 62305. It describes protective measures against lightning events and an extensive risk analysis with regard to the necessity, scope, and cost-effectiveness of a protection concept.