Surge protection and lightning protection

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.

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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.

These are the advantages

  • 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

These are the main features

  • 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

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. 

These are the advantages

  • 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

These are the main features

  • 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

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.

These are the advantages

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

These are the main features

  • 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

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

FLT SEC type 1+2 special surge protection in the main distribution

FLT SEC type 1+2 special surge protection in the main distribution

Surge protection for the power supply

Our type 1+2, type 1+2 special, type 2, or type 3 surge protective devices provide effective protection for your electronic devices. From feed-in to the end device, we offer convenient, ready-to-install solutions for all applications.

Narrow surge protection for signals in the control cabinet

Narrow surge protection for signals in the control cabinet

Surge protection for MCR technology and signals

A large number of signals are controlled and monitored in measurement and control technology (MCR technology) applications. Our protective devices prevent malfunctions and damage caused by surge voltages and offer an ideal solution for any application.

Surge protection for information technology

DT-LAN protects against surge voltages from the data network

Surge protection for information technology

Data interfaces are particularly sensitive to surge voltages, because they operate with low signal levels and high frequencies. Use our surge protection solutions for interference-free data transmission while maintaining the bandwidth in your IT systems.

Surge protective device for the protection of transceiver systems with antenna amplifiers

C-SAT-BOX protects connected TV and HiFi equipment against surge voltages

Surge protection for transceiver systems

Transceiver systems are particularly at risk from surge voltages. Antenna cables that extend beyond the building and the antennas themselves are directly exposed to atmospheric discharges. Play it safe with our powerful, coaxial surge protective devices.

Ready-to-install string combiner boxes with surge protection for photovoltaic systems

Ready-to-install string combiner boxes with surge protection for photovoltaic systems

String combiner boxes for photovoltaic systems

String combiner boxes need to be used in order to provide optimum protection for photovoltaic systems against lightning strikes and surge voltages. Our ready-to-install string combiner boxes can be connected immediately, and are reliable system solutions that protect the inverter directly upstream of the DC and AC voltage inputs. Surge voltage couplings are discharged directly to the ground potential.

ImpulseCheck monitors type 1+2 special surge protective device in the main distribution

ImpulseCheck monitors type 1+2 special surge protective device in the main distribution

Test and monitoring devices

ImpulseCheck is the world’s first intelligent assistance system for surge protection in the field of mains protection, allowing you to monitor your systems in real time. The system permanently records the state of the relevant system. The state of health of the surge protective device is known at all times, so you can prevent a failure in good time.

To manually test pluggable surge protective devices in accordance with the requirements of IEC 62305, use CHECKMASTER 2 as a mobile test device. You can prevent machine and system failures by performing periodic precautionary checks.

Isolating spark gap on an insulating flange

Isolating spark gap for discharging surge voltages on an insulating flange

Isolating spark gap

When high voltages occur for a short period (for example, due to a lightning strike), isolating spark gaps connect metallic exposed conductive parts which must not be permanently galvanically connected during operation. For example, protect sensitive insulating flanges in pipelines against sparkover and avoid failures, downtimes, or leaks.

Protective circuit principle and protection concept

Protective circuit principle and protection concept

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

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.