weidmuller surge protection

Weidmuller Surge Protection

The importance you attach to surge protection depends on your appetite for risk. Lightning protection systems safeguard systems against fire or electrical destruction and protect people from injury. A lightning strike discharges several hundred kilovolts of electricity. Costly repairs, downtimes and sustained revenue losses can result in the absence of lightning arresters. Reason enough to protect yourself against damage by using VARITECTOR lightning and surge protection devices from Weidmüller.

With VARITECTOR, Weidmuller and Tro Pacific offer an extended family of surge arresters of various types for power distribution systems, electronic equipment as well as for measurement, control and regulating signals (MSR technology ), such as analogue and digital signal circuits, data interfaces like Ethernet Cat. 6. Protective elements are also available for your telephone system, lightning protection solutions and 600V, 1000V, 1200V and 1500V surge arresters for wind power and photovoltaic systems.

The products for lightning and surge protection can be used in conjunction with all Weidmüller Industrial Ethernet, power supplies, analogue signal processors as well as relays and semiconductor switches or combined to form countless complete solutions.

Surge Protection Catalogue – PDF

For Instrumentation and Control

Overvoltage coupling along the conductor path may disturb or destroy sensitive signal inputs. It is important to provide protection in the immediate vicinity of I&C devices. Weidmüller’s broad product range for the I&C sector offers products in a 2-piece, pluggable design and modular terminals for tension clamp or screw connection. These products are suitable for both binary and analogue signals. Weidmüller also offers other designs with integrated components such as gas discharge tubes or varistors. VARITECTOR stands for flexible and variable surge protection by Weidmüller, tested according to product standard IEC61643-21. The VARITECTOR series can be used in applications according to IEC 61643-22 / VDE 0845-3 for classes C1, C2, C3 and D1. The VARITECTOR SPC, SSC and MCZ OVP product families optimally combine electrical and mechanical properties. Size and easy handling play an important role. This surge protection is suited for confined spaces in industrical and process automation as well as in building automation applications.

Instrument and Control

For energy networks in AC applications

Weidmüller VPU I (Type I), VPU II (Type II) and VPU III (Type III) surge protection products effectively reduce the interference coupling that can occur from transient surge voltages, even significantly below the limits prescribed by insulation co-ordination according to EN 60664-3 / DIN VDE 0110-3. This means that the entire system is exposed to less malfunction. The co-ordination of the arresters is achieved by technical means. This means that decoupling between types I, II and III is not necessary. The arresters are tested according to product standard IEC 61643-11:2012 / DIN EN 61643-11:2012 and can be installed in systems according to IEC 61643-12 / VDE V0675-6-12 and IEC 62305-4 / VDE 0185-4. This lightning and surge protection device is suited for installation in power supply systems. Weidmüller offers different products for different mains types and voltage levels. Even for photovoltaic applications, there is a special protection according to EN 50539-11/ VDE 0675-39-11: 2010 available.

Instrument and Control

For energy networks in DC applications

Type II surge arrestor for use in photovoltaic applications

  • Pluggable arrestor
  • Suitable for protecting DC systems
  • High energy absorption with short time to sparkover
  • Tested according to EN 50539-11
  • Suitable for use according to IEC 60364-7-712 / EN 50539-12
  • Coded voltage level
  • Installation in distribution board
  • Thermal protection function
Instrument and Control

For data interfaces

“Data transmission” is the transfer of characters, numbers, statuses, measurements, etc. between different, decentralised units. “Decentralised units” are controls, computers, measurement sensors, actuators, etc. Appropriate overvoltage protection is essential for such sensitive areas. Weidmüller can offer a wide range of solutions.

Instrument and Control

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