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  • Offer Profile
  • Our company focuses on the reliable protection of buildings and constructions, electrical and electronic systems and human life. Our pioneering spirit and innovative ideas have been defining our company for more than 100 years and made us a global market leader for surge protection, lightning protection/earthing as well as safety equipment.
Product Portfolio
  • Protection solutions

  • DEHN offers comprehensive protection solutions in the fields of surge protection, lightning protection/earthing and safety equipment for many different industries.
      • Solutions for buildings and systems

      • Surges are a great danger. Direct, nearby and remote lightning strikes as well as switching operations in electric power stations can damage buildings and systems.
        • Residential buildings
        • Office and administration buildings
        • Systems and buildings
        • Communication and data systems
        • Measuring and control equipment, bus systems
        • Industrial plants
        • Safety systems
      • Solutions for industrial plants

      • Failure of production facilities as a result of lightning effects can have fatal consequences. Protection measures are essential to ensure the availability of industrial plants.
        • Buildings
        • Lightning protection zone concept
        • Production facilities
        • Maintenance
      • Solutions for the power industry

      • Protection solutions and products ranging from power generation, power transmission and distribution to power consumption particularly for photovoltaic systems, wind turbines, biogas plants as well as complete smart energy systems.
        • Protection of wind turbines
        • Protection of photovoltaic systems
        • Protection of power grids (smart energy)
        • Protection of biogas plants
      • Solutions for mobile communication systems

      • As an expert for information and communication technology, DEHN is an important supplier of earthing, equipotential bonding as well as lightning and surge protection.
        • Safety systems
        • Cell sites
      • Solutions for the oil and gas industry

      • The direct and indirect effects of lightning strikes and other transients threaten chemical and petrochemical systems.
        • Midstream - transport and storage
        • Downstream – processing and distribution
      • Solutions for the chemical and pharmaceutical industry

      • Many chemical and pharmaceutical companies rely on innovative products from DEHN for protecting systems and processes as well as production and storage facilities.
        • Production facilities
        • Storage facilities and tanks
      • Solutions for transportation systems

      • DEHN offers a comprehensive lightning protection, surge protection and safety equipment portfolio for protecting railway systems and supports the development of electromobility.
        • Railway systems
        • Electromobility
      • Lightning - fascinating but dangerous

      • Lightning is fascinating, but also dangerous due to the risk of fire and surges. Therefore, persons, buildings, systems as well as electric and electronic devices must be protected.
        • When lightning strikes
        • Lightning protection systems
    • Power Supply Systems

    • Our Red/Line surge protection portfolio includes solutions for protecting systems up to 1,000 V a.c. / 1,500 V d.c. against surges caused by atmospheric discharge and switching operations.
        • Type 1 Combined Lightning Current and Surge Arresters

        • Spark-gap-based type 1 combined arresters - DEHNventil, DEHNvenCI, DEHNshield, DEHNlimit - combine lightning equipotential bonding and protection of terminal equipment in a single arrester.
        • Coordinated Type 1 Lightning Current Arresters

        • Thanks to their high efficiency, coordinated spark-gap-based type 1 lightning current arresters are ideally suited for installation in the main distribution board of low-voltage consumer’s installations.
        • Type 1 Lightning Current Arresters

        • Type 1 lightning current arresters ensure lightning equipotential bonding in electrical installations and allow a compact configuration of low-voltage main distribution boards.
        • Accessory for Type 1 Arresters

        • Receiver modules for optical transmission for selective operating state indication / centralised fault indication of three coordinated DEHNbloc Maxi S / DEHNgap Maxi S lightning current arresters.
        • N-PE Lightning Current Arresters

        • Spark-gap-based type 1 N-PE lightning current arresters of type DEHNgap are installed in “3+1” or “1+1“ circuits of TT or TN systems between neutral conductor N and protective conductor PE.
        • Type 2 Surge Arresters

        • Type 2 DEHNguard S / M ...CI / SCI surge arresters are available in different types and voltages and are ideally suited for a.c., d.c. and PV applications.
        • Type 3 Surge Arresters

        • Type 3 arresters are typically used for protecting terminal equipment. Different types of enclosures allow easy installation close to terminal equipment.
        • International

        • DEHN provides specialized solutions to fulfil the regional different demands (e.g. diverse voltage levels, earthing conditions, standards) of many Power Supply Systems and markets worldwide.
        • General accessories

        • Adequate accessories such as terminals, insulating enclosures or busbars make it easier to install and monitor DEHN surge protective devices in many applications.
        • Isolating spark gaps

        • Isolating spark gaps for aboveground and underground installation are used to indirectly earth and connect functionally isolated parts of installations under lightning conditions.
        • Measuring and test equipment

        • Monitoring devices for measuring leakage currents flowing through surge protective devices and isolating spark gaps for recording discharge processes.
        • SDS

        • The function of voltage-limiting devices in railway systems is to permanently connect parts in the overhead contact line and pantograph zone to the return circuit as soon as the sparkover voltage is exceeded.
      • Information Technology Systems

      • Our Yellow/Line surge protection portfolio comprises surge protective devices for information technology devices and systems of buildings, process plants and telecommunication systems.
          • Pluggable DIN Rail Mounted SPDs

          • The universal and pluggable DIN rail mounted arresters of the BLITZDUCTOR SP/XT/XTU series protect measuring and control circuits, bus systems and telecommunication systems.
          • Terminal block with integrated surge protection

          • The space-saving and function-optimised DEHNconnect SD2 terminal blocks with integrated surge protection protect measuring and control circuits and bus systems.
          • Compact DIN Rail Mounted SPDs

          • The application-optimised BLITZDUCTOR VT surge protective devices are ideally suited for process and automation technology.
          • SPDs for LSA Technology

          • The DEHNrapid series for LSA technology is a flexibly combinable system of lightning current and surge arresters for telecommunication systems and measuring and control applications.
          • SPDs for field devices

          • Surge arresters of the DEHNpipe series provide effective protection for field devices, also in hazardous areas.
          • SPDs for telecommunication and data networks

          • The surge arresters of the DEHNpatch and NET Protector families protect Ethernet, ISDN and DSL interfaces and can be flexibly installed / retrofitted on terminal equipment or in 19" distribution cabinets.
          • SPDs for building systems

          • Arresters for building systems are surge protective devices for telecommunication interfaces and bus systems for building automation whicg can be easily installed and retrofitted.
          • SPDs for Coaxial Connection

          • The arresters of the DEHNgate and UGKF series provide protection for coaxial systems such as satellite systems, modem technology, video and transmission systems and large transmitters and receivers.
          • SPDs for SUB-D Connection

          • The FS and USD arresters with SUB-D connection are designed for installation at terminal equipment and are ideally suited for protecting V-24, RS485/422 and Profibus-DP interfaces.
          • Shield connection systems and enclosures

          • Lightning-current-tested shield terminals with accessories for lightning equipotential bonding of cable shields and aluminium enclosures for DIN rail mounted devices.
          • Measuring and test devices

          • The condition monitoring system with LifeCheck® sensor is a powerful monitoring system which already detects pre-damaged arresters and indicates imminent failure. The associated monitoring devices are available as stationary units or flexible hand-held devices.
        • External Lightning Protection

        • Our lightning protection / earthing product range includes products for protecting buildings from mechanical destruction caused by lightning effects and the associated risk of fire.
            • BS Material

            • 25 x 3mm copper / aluminium conductor system, PVC covered conductor, clamps, fixings, earth rods, earth pits and earth bars for lightning protection, earth termination and equipotential bonding.
            • Conductors

            • Round wires, strips and cables according to EN 50164-2, different materials and diameters, for lightning protection and earth-termination systems and equipotential bonding.
            • Air-termination Systems and Accessories

            • Air-termination rods, air-termination tips and mounting material such as concrete bases, fixing brackets and clamps are used to protect superstructures protruding from the roof against direct lightning strikes.
            • Isolated Lightning Protection

            • Self-supporting air-termination rods, telescopic lightning protection masts and components made of glass-fibre reinforced plastic (GRP) for installing isolated air-termination systems to keep the separation distance.
            • HVI Lightning Protection, CUI Conductor

            • High-voltage-resistant insulated HVI® and CUI Conductors allow to keep the separation distance from conductive parts and to control touch voltage on down conductors.
            • Roof Conductor Holders and Wall Conductor Holders

            • Conductor systems for flat roofs, roof surfaces, metal roofs, ridge tiles and hip tiles for fixing round and flat conductors on different types of roofs or on the facade.
            • Connecting Components

            • Clamps for combining round and flat conductors and for connecting constructional elements. Expansion joints, bridging components and test joint boxes for connection to the earth-termination system.
            • Components for Foundation Earth Electrodes and Earth Rods

            • Connecting components for reinforcements, foundation earth electrodes and equipotential bonding. Earth rods for installing single earth electrodes for lightning protection systems and plants including connecting clamps.
            • Equipotential Bonding

            • Pipe clamps, equipotential bonding bars and earthing busbars for equipotential bonding of extraneous conductive parts according to IEC 60364-4-41 / IEC 60364-5-54 and lightning equipotential bonding according to IEC/EN 62305-3.
            • Special Application

            • Accessories for straightening round and flat conductors, earthing resistance meters for testing earth-termination systems, insulating and corrosion protection materials for clamping points/connections in the soil.

              Isolated lightning protection systems for thatched roofs (HVI®), earthing materials for mobile military telecommunication systems, components for use in potentially explosive atmospheres and spark gaps for overhead line roof poles.

          • Safety Equipment

          • Our safety equipment portfolio comprises auxiliary equipment that ensures safe work on electrical installations of power supply systems, electric railways and industrial plants.
              • Safety products for working according to the five safety rules

              • Safety devices such as operating sticks, lock-out systems, voltage detectors, earthing and short-circuiting devices and insulating protective shutters for working according to the five safety rules.
                  • Operating Sticks

                  • Operating sticks for hot stick working are used to switch and provide protection for live equipment or to attach earthing and short-circuiting devices.
                  • Lock-out devices

                  • Lock-out devices for protecting the work location from re-connection. The components are marked with the symbol "Nicht schalten" (Do not close the circuit).
                  • Voltage Detectors

                  • Complete and separate voltage detectors for a.c. and d.c. systems for verifying safe isolation from supply voltage on all poles at the work location.
                  • Phase Comparators

                  • Resistive and capacitive phase comparators for verifying in-phase conditions on all poles by making contact with three-phase systems.
                  • Voltage Detecting Systems DEHNcap

                  • Capacitive voltage detecting system for verifying safe isolation from supply voltage on all poles at the work location for switchgear installations with HR or LRM test sockets.
                  • Earthing and Short-Circuiting Devices

                  • Earthing and short-circuiting devices for earthing and short-circuiting electrical installations as well as accessories and single parts, also for low-voltage installations. Earthing and short-circuiting devices can be individually configured via the earthing and short-circuiting configurator!
                  • Insulating Protecting Shutters

                  • Insulating protective shutters protect against accidental contact with live parts of an installation. Due to the various designs of switchgear installations, there are four basic types.
                • Safety products for live working

                • Products for live working up to 36 kV increase the availability of your installations since they do not have to be disconnected. We also offer live working services!
                    • Live Cleaning Equipment

                    • Dry and damp cleaning kits for indoor and outdoor use are used to clean electric parts of low-voltage and high-voltage installations under live conditions.
                    • Refilling Equipment

                    • Equipment for refilling hot HT mass into paper-insulated mass-impregnated cables under live conditions as well as accessories.
                    • Protective and Auxiliary Equipment

                    • Protective and auxiliary equipment for working on live parts, particularly personal protective equipment (PPE) up to 1000 V.
                  • Arc fault protection products

                  • Personal protective equipment (PPE) for protecting persons from the thermal effects of an arc fault as well as protection systems for protecting persons and increasing the availability of installations.
                      • Passive arc fault protection - DEHNcare

                      • Safety and wearing comfort during working on electrical installations. Personal protective equipment (PPE) for protecting persons from the thermal effects of an arc fault.
                      • Active arc fault protection

                      • Arc fault protection systems for limiting the arc energy. The destructive energy is reduced to a minimum, thus protecting persons and preventing extended downtime.
                    • Further equipment

                    • Set of warning signs for electrical installations, earthing and discharge devices, storage bags and transport cases as well as accessories for our safety devices.
                        • Voltage-limiting devices

                        • Voltage-limiting devices for discharging surges without short-circuit formation, safe equipotential bonding and galvanic isolation, including accessories.
                        • Set of warning signs

                        • For electrical installations according to EN 50110-1. The individual warning signs are also separately available.
                        • Lock-out devices

                        • Barrier and accessories for providing protection for parts of an installation.
                        • Discharge devices

                        • Single-pole earthing and discharge devices for earthing and short-circuiting statically charged electrical installations at the work location as per EN 50110-1.
                        • Storage Bags and Transport Cases

                        • Different storage bags and transport cases allow easy and safe transport or storage of our products.
                        • Accessories

                        • Accessories (electrodes, probes, storage devices and spare parts) for our safety devices.
                        • Individual kit parts

                        • Individual kit parts of our safety devices (voltage detector kit, operating stick kit, etc.).
                      • New products

                      • Here you will find up-to-date information on new surge protection (power supply and information technology systems), lightning protection/earthing and safety equipment products.
                          • Surge protection - Power supply systems (Red/Line)

                          • Surge protective devices for installation into switchgear installations, meter mounting boards, distribution cabinets, cable ducts, socket outlets and terminal equipment
                              • NEW: DEHNcord type 2 surge arrester

                              • The flexible and space-saving DEHNcord (two-pole, single-pole) can be installed in installation systems such as the terminal compartments of end loads, cable ducts or flush-mounted systems.
                              • DEHNgap Maxi 1 255 (FM)

                              • Coordinated single-pole N-PE lightning current arrester for UC = 255 V; optionally available with remote signalling contact for monitoring device (floating changeover contact).
                              • DEHNguard YPV SCI ... Compact

                              • Multipole surge arrester for string inverter systems
                              • DEHNguard ME YPV SCI 1500 (FM) - DEHNguard SE PV SCI 1500 (FM)

                              • Prewired modular complete unit for use in photovoltaic systems up to 1500 V consisting of a base part and plug-in protection modules
                              • NEW: DEHNcube YPV SCI

                              • First type 2 surge arrester with IP65 degree of protection. Compact and easy-to-install arrester for quick and flexible use in photovoltaic systems - available in two versions (1 MPPT and 2 MPPT).
                              • DEHNguard PCB

                              • DEHNguard PCB - Single-pole base mounted on the PCBs of devices accommodates DEHNguard modules
                              • DEHNvenCI - Combined arrester with integrated backup fuse

                              • Type 1 spark-gap-based combined arrester with integrated backup fuse
                            • Surge protection - IT systems (Yellow/Line)

                            • Lightning current arresters, combined arresters or surge arresters for fixed installation or for use as plug-in adapters.
                                • NEW: DEHNbox TC 180

                                • Powerful, user friendly combined arrester for protecting telecommunication interfaces (analogue telephone, ISDN, xDSL) with IP 65 degree of protection for private, commercial and industrial environments.
                                • New arrester series: BLITZDUCTOR® SP

                                • The devices are pluggable multipole DIN rail mounted surge arresters – universally useable for protecting measuring and control circuits, bus systems or telecommunication systems.
                                • DEHNgate LG/L4 7 16 MFA

                                • Two new coaxial broadband arresters (DGA LG 7 16 MFA and DGA L4 7 16 MFA) for protecting multi-frequency applications (MFA) have been added to the DEHNgate product family.
                                • Accessory for condition monitoring system

                                • A 24 V power supply unit of type PSU DC24 30W is now available as accessory for the DRC MCM XT and DRC SCM XT condition monitoring systems. DIN rail mounted with single-phase wide-range input for use in different supply systems.
                                • DEHNconnect DCO SD2

                                • New device series:
                                  DEHNconnect DCO SD2 – Terminal block with integrated surge protection and disconnection function
                                • BXT M2 BD S EX 24

                                • Ideally suited for protecting one signal interface (one pair) of intrinsically safe measuring circuits in hazardous areas (e.g. 4-20mA, Fieldbus Foundation, Profi-bus-PA).
                                • DEHNrecord DRC SCM XT

                                • LifeCheck®-equipped BLITZDUCTOR® XT/XTU arresters. Visual status indication via three-colour LED combined with a remote signalling contact (break contact).
                                • DEHNrecord DRC LC M1+ – Handheld test device

                                • DRC LC M1+ is a portable test device with LifeCheck® sensor for flexible use. It allows easy and fast testing of LifeCheck®-equipped arresters and even detects pre-damaged arresters.
                              • Lightning Protection / Earthing

                              • Components for external lightning protection systems
                                  • Telescopic test joint box

                                  • The telescopic test joint box is specifically designed for integration in thermal insulation composite systems (full thermal insulation).
                                  • Sealing collar for terminal lugs

                                  • Sealing collar to lead the conductor through waterproof foundation slabs / walls (e.g. white tank).
                                  • Threaded Adapter

                                  • Threaded adapter for connection to fixed earthing terminals with thread M10, lock nut and spring washer, for use in case of perimeter insulation or thermal insulation composite systems.
                                  • HVI®-power - high-voltage-resistant conductor

                                  • The new HVI®power conductor is the ideal solution for all classes of LPS
                                  • Isolated air-termination system: HVI®system

                                  • Maximum flexibility for subsequent installation of roof-mounted structures due to the large protected zone.
                                  • Tripods for HVI® supporting tubes

                                  • Special design for HVI Conductor inside of the supporting tube, with lateral outlet and double cleat for connecting 2x Rd 8-10 mm.
                                    Adjustable to the roof inclination up to max. 5°
                                  • UNI Saddle Clamp with screw M8 and locking nut

                                  • The StSt contact plate allows for different materials of conductors to be connected to the usual mounting systems, e.g. to aluminium, without the risk of contact corrosion.
                                • Safety Equipment

                                • For working on electrical installations
                                    • DEHNcare - Arc-fault-tested protective equipment

                                    • Each and every day electrical work is carried out all over the world. The risk that technical defects, maloperation, pollution or foreign matter in the installation cause arc faults cannot be excluded.
                                    • SDS Enclosure - Mast adapter

                                    • The new SDS enclosure, which is directly fixed at the contact line mast, allows to replace voltage-limiting devices without having to access the critical point of the track section.
                                    • PHE III voltage detectors (30 to 60 kV)

                                    • Voltage detectors for railways

                                    • ASP non-contact voltage detectors, PHE III voltage detectors, PHE III voltage detectors for supply lines, PHE III voltage detectors for overhead contact lines
                                    • DEHNarc - Modular arc fault protection system

                                    • DEHNarc modular arc fault protection system for low-voltage distribution boards in transformer stations