DEHN

DEHN Surge Protection and Lightning Protection for Solar PV, Inverters and Energy Storage

DEHN is a German manufacturer specialising in lightning protection, surge protection devices (SPDs), earthing, equipotential bonding and electrical safety solutions. Its technologies are used in residential and commercial buildings, industrial facilities, solar photovoltaic installations, battery energy storage systems, EV charging infrastructure and electrical distribution networks.

At 3Buy Solar, we support professional solar installers, qualified electricians, EPC contractors, electrical wholesalers, resellers and energy project developers sourcing DEHN surge protection devices, Type 1+2 PV lightning arresters, DC and AC surge protection and electrical safety components for European photovoltaic projects.

Solar inverters, battery energy storage systems, monitoring equipment and electrical distribution systems contain sensitive electronic components. Transient overvoltages caused by lightning activity or electrical switching events can damage equipment, interrupt system operation and create substantial repair costs.

DEHN provides application-specific protection solutions for PV DC generators, solar inverter AC connections, electrical distribution boards and selected communication circuits. These include DEHNcombo YPV, DEHNguard YPV, DEHNcube PV and other products designed for coordinated electrical protection.

For professional PV installations, the objective is not simply to install a surge arrester. It is to select and position the correct protection equipment within a properly designed electrical system.

Browse DEHN Products at 3Buy Solar | Request DEHN B2B Project Pricing

Why Choose DEHN for Solar PV Surge and Lightning Protection?

DEHN has extensive engineering experience in lightning current management, overvoltage protection and electrical safety. Its product portfolio addresses the different electrical environments found in residential rooftops, commercial solar installations, industrial power systems and utility-scale energy projects.

Photovoltaic circuits require particular attention because solar panels can continue supplying DC voltage whenever sufficient light is available. DC switching and fault-clearing conditions differ from those of conventional AC electrical systems.

PV surge protective devices must therefore be specifically rated for the intended DC system, including maximum continuous PV voltage, discharge capability and short-circuit withstand characteristics.

Key Advantages of DEHN Electrical Protection

• PV-specific surge protection: Dedicated protective devices for photovoltaic generator circuits.
• Type 1 lightning current protection: Solutions for electrical installations requiring lightning impulse current discharge capability.
• Type 2 surge protection: Devices designed to limit transient overvoltages from induced lightning effects and electrical switching.
• Combined Type 1+2 protection: Product configurations providing both functions at a suitable installation point.
• AC and DC protection: Separate product families for photovoltaic arrays, inverter connections and electrical distribution.
• Lightning protection engineering: Solutions for buildings, external lightning protection systems, earthing and equipotential bonding.
• Communication protection: Selected products for monitoring, Ethernet and control infrastructure.
• Commercial system reliability: Protection concepts for distributed PV inverters, battery energy storage and industrial electrical equipment.

Correct product selection remains essential. A DEHN product should be specified using its exact article number, manufacturer datasheet and the relevant electrical installation requirements.

Official DEHN Manufacturer Website

DEHN Product Range – Surge Protection Devices for Photovoltaic Systems

The DEHN portfolio includes several product families with different functions and protection classifications.

The ranges above are manufacturer’s product families. Availability through 3Buy Solar must be confirmed for the exact article required.

DEHNcombo YPV – Type 1+2 Surge Protection for Solar PV

DEHNcombo YPV is a combined lightning current and surge arrester specifically designed for photovoltaic generator circuits.

It provides Type 1 and Type 2 protection functions in a single product, making it relevant where both lightning current discharge capability and transient overvoltage limitation are required.

DEHNcombo YPV is especially important for selected rooftop installations with external lightning protection systems where the required separation distance between lightning protection components and the photovoltaic system cannot be maintained.

It may also be used in appropriately engineered commercial and ground-mounted PV installations.

DEHNcombo YPV 1200 vs 1500 – Technical Specifications

The specified impulse-current and voltage-protection values apply to defined manufacturer test paths. They must not be interpreted as identical ratings for every possible connection mode.

DEHNcombo YPV products are designed for photovoltaic DC installations and should not be substituted for an unrelated AC or battery DC surge protective device.

DEHNcombo YPV Official Product Information

DEHNcombo YPV Technical Datasheet – PDF

DEHNguard YPV – Type 2 DC Surge Protection

DEHNguard YPV is a photovoltaic-specific Type 2 surge protection family designed to limit transient overvoltages in solar generator circuits.

Type 2 protection is commonly specified where induced lightning effects or switching surges are the relevant design concern and Type 1 lightning current discharge capability is not required at that location.

Applications can include:

• Residential rooftop PV arrays.
• Commercial photovoltaic installations.
• DC combiner boxes.
• Solar inverter DC input circuits.
• Ground-mounted PV systems.
• Hybrid solar installations.

For example, DEHN identifies the DEHNguard MP YPV 1170, article number 942565, as a Type 2 photovoltaic surge protective device with replaceable protective modules and Thermo Dynamic Control monitoring.

Other DEHNguard variants are available for different system voltages and installation requirements.

Selection should be based on the required UCPV rating, short-circuit withstand, nominal discharge current, voltage protection level and device configuration.

DEHN Rooftop Photovoltaic Protection and DEHNguard Selection

DEHNcube PV – Prewired Solar PV Surge Protection

DEHNcube PV provides enclosed, preconfigured surge protection solutions for photovoltaic applications.

These products are useful where installers require a dedicated PV protection enclosure rather than incorporating individual surge protective devices into a custom-designed switchboard.

Depending on the exact configuration, advantages include:

• Preassembled surge protection components.
• Application-specific PV wiring arrangements.
• Outdoor-suitable enclosure options.
• Convenient installation near relevant PV equipment.
• Reduced on-site assembly compared with separately sourced components.

DEHN identifies DEHNcube PV products with IP65 enclosures and photovoltaic applications up to specified DC system voltages.

The exact product variant determines its maximum operating voltage, SPD classification, connectors and installation requirements.

A prewired surge protection enclosure does not automatically replace an external DC isolator, residual-current protection, overcurrent protective device or fire-safety switch.

DEHNcube PV – Official Manufacturer Information

DEHNventil and AC Surge Protection

DEHN also manufactures lightning and surge protective devices for low-voltage AC electrical distribution.

DEHNventil includes combined lightning and surge protection solutions for applications requiring coordinated protection at appropriate points in the AC installation.

These products may be relevant to:

• Main electrical distribution boards.
• Residential buildings with solar PV.
• Industrial electrical installations.
• Commercial rooftop photovoltaic systems.
• Electrical infrastructure serving solar battery installations.
• Buildings with external lightning protection.

Correct AC SPD selection depends on the relevant network and earthing system, including TT, TN-S or TN-C arrangements where supported.

A three-phase solar inverter does not automatically require the same SPD configuration as every other three-phase installation.

The neutral arrangement, installation location, upstream protection and applicable wiring rules must also be considered.

Browse Solar PV Electrical Protection and Disconnectors

Type 1 vs Type 2 vs Type 1+2 Surge Protection for Solar Installers

Understanding the difference between surge protection classifications is essential for safe photovoltaic system design.

When Is Type 1 PV Surge Protection Required?

Type 1-capable protection is relevant where the electrical installation must safely conduct a portion of lightning current.

DEHN identifies rooftop PV systems with external lightning protection and insufficient separation distance as an important application for Type 1+2 DC surge protection.

Where the required separation distance cannot be maintained, lightning equipotential bonding and coordinated surge protection become necessary elements of the design.

When Is Type 2 PV Surge Protection Appropriate?

Where the required separation distance is maintained and the relevant design conditions are satisfied, Type 2 PV surge protection may be appropriate.

The specific requirement depends on the lightning protection concept, risk assessment, national wiring rules and the electrical installation.

Is Type 1+2 Always Better Than Type 2?

No. Correct coordination is more important than choosing the highest classification.

A Type 1+2 SPD must still provide a suitable voltage protection level and be compatible with the protected equipment, installation location and electrical system.

A protection device cannot compensate for incorrect earthing, improper cable routing or a non-compliant lightning protection system.

DEHN Engineering Guide – Rooftop PV Lightning and Surge Protection

DEHN DC Surge Protection – Solar Panels, PV Strings and Combiner Boxes

The DC side of a photovoltaic installation connects solar modules to the solar inverter or other power conversion equipment.

Depending on the installation, DC circuits may include long cable runs, string-combining equipment, DC isolation and overvoltage protection.

DEHN photovoltaic surge protection products are designed to limit transient overvoltages entering through suitable PV generator circuits.

DEHN SPDs and DC Isolators – Different Safety Functions

An SPD is not a disconnect switch.

A DC surge protective device limits transient overvoltage, while a DC isolator allows a photovoltaic circuit to be disconnected for maintenance, inspection or other authorised work.

Solar installers frequently require both device categories within the same project.

For PV string isolation, 1000V or 1500V DC system designs and maintenance disconnect requirements, see DC Isolators and PV Disconnect Switches.

Correct DC switch selection should consider operating voltage, current, pole configuration, switching capability, applicable standards and environmental protection.

Solar PV Cables and Wiring for SPD Installations

Conductor routing and cable length influence the effectiveness of surge protection.

Long or poorly arranged SPD connection conductors can increase the effective voltage experienced by protected equipment during a transient event.

Professional installers should use suitable conductors, approved termination methods and the wiring arrangement prescribed by the SPD manufacturer.

For related installation components, see Solar PV Cables and Wiring.

PV Connectors and Electrical Connection Safety

Connectors also form part of the PV DC electrical path.

The correct connector system must match the cable specifications and equipment requirements. Different connector types should not be assumed interchangeable solely because they appear mechanically similar.

See Solar PV Connectors and MC4-Type Connector Accessories for the related equipment category.

A correctly specified surge protective device does not eliminate the risks caused by poor DC terminations, mismatched connectors or incorrect cable sizing.

DEHN AC Surge Protection – Solar Inverter Outputs and Electrical Distribution

The AC side of a photovoltaic system can also be exposed to transient overvoltages.

Depending on the installation, protection may be required at the electrical distribution board and closer to the solar inverter.

The selection must consider the applicable AC earthing system, required SPD type, connection configuration and equipment impulse withstand.

AC Disconnect Switches and Surge Protection

AC disconnect switches provide isolation for maintenance and service work. Their purpose differs from that of an AC surge protective device.

For single-phase or three-phase solar inverter installations, related components can be sourced through AC Disconnect Switches for Solar Inverters.

Where both isolation and surge protection are required, the devices must be positioned and coordinated according to the electrical design.

RCDs, RCCBs and RCBOs – A Separate Protection Function

Residual-current protective devices detect specified imbalance or leakage currents. RCBOs additionally provide overcurrent protection.

They do not serve the same function as surge protective devices.

Their correct selection depends on inverter design, residual-current characteristics, manufacturer requirements and the applicable wiring standards.

For associated equipment, see RCDs, RCCBs and RCBOs for Solar PV Installations.

The protection system should distinguish clearly between surge protection, residual-current protection, overcurrent protection and circuit isolation.

DEHN Lightning Protection for Residential Rooftop Solar Systems

Residential solar installations combine rooftop electrical generation with existing building distribution systems.

The installation must be assessed in relation to the building’s lightning protection arrangement, roof construction, conductive metal components, PV cable routing and electrical earthing system.

Residential PV Without External Lightning Protection

Where a building has no external lightning protection system, surge protection requirements must still be assessed under the applicable electrical installation standards.

PV mounting frames and other conductive parts require appropriate bonding or earthing arrangements according to their design and manufacturer instructions.

DEHN’s rooftop PV guidance addresses AC-side and DC-side protection, equipment proximity and equipotential bonding.

Residential PV With External Lightning Protection

Where an external lightning protection system is present, the separation distance between the lightning protection system and conductive photovoltaic equipment is particularly important.

The separation distance is intended to prevent dangerous flashovers.

If it cannot be maintained, the installation may require lightning-current-carrying bonding and Type 1-capable surge protection at relevant lightning protection zone boundaries.

DEHNcombo YPV is an example of a product family intended for applicable DC-side protection.

Rapid Shutdown and Firefighter Safety

Surge protection must also be distinguished from PV rapid shutdown and emergency disconnection.

Rapid shutdown systems and firefighter safety switches are intended to provide specified PV circuit shutdown or disconnection functions. They are not substitutes for SPDs.

For rooftop safety equipment, see Rapid Shutdown and Firefighter Safety Switches.

The correct requirements depend on local rules, roof access, system design, building use and the intended emergency shutdown arrangement.

DEHN Protection for Commercial and Industrial Solar PV Systems

Commercial and industrial photovoltaic installations often involve larger electrical networks, multiple inverters, extensive DC cable routes and distributed monitoring infrastructure.

Examples include:

• Logistics warehouses and distribution centres.
• Commercial and retail rooftops.
• Factories and manufacturing facilities.
• Agricultural production buildings.
• Industrial self-consumption installations.
• Office complexes.
• Large commercial solar carports.
• PV projects with integrated battery energy storage.

For EPC contractors, surge protection design affects installation safety, asset protection, operational continuity and maintenance planning.

DEHN Protection for Low-Tilt and East-West PV Rooftops

East-west and low-tilt rooftop systems can contain large numbers of modules, extensive string routes and several inverter locations.

Electrical protection design should consider:

• Rooftop lightning exposure.
• PV string lengths and cable routing.
• External lightning protection separation distance.
• Module frame bonding and equipotential bonding.
• Appropriate DC and AC SPD locations.
• Inverter input and output circuit protection.
• Remote monitoring and data connections.
• Relevant fire-safety and disconnection requirements.

For related equipment, installers can combine sourcing from Solar PV Protection and Disconnectors with Solar Installation Accessories.

When Are Additional SPDs Required?

DEHN’s rooftop PV application guidance highlights cable distance as an important factor.

In the protection configurations described by the manufacturer, cable runs longer than 10 metres between the arrester and the protected equipment can require additional Type 2 protection.

This is not a universal rule that every cable exceeding 10 metres automatically requires the same device. The relevant installation configuration, protective distance and applicable standards must be considered.

For larger commercial systems, the protection concept should be reviewed across the entire installation rather than limited to a single SPD close to the inverter.

DEHN for Ground-Mounted Solar Parks and Utility-Scale PV

Utility-scale photovoltaic installations can involve long cable routes, distributed inverters, extensive earthing networks and valuable electrical infrastructure.

Surge and lightning protection planning must account for the different protection zones and electrical systems throughout the site.

Relevant interfaces include:

• PV arrays and string combiner boxes.
• DC input circuits.
• String and central inverters.
• Low-voltage AC distribution.
• Monitoring and SCADA systems.
• Communication and signal infrastructure.
• Relevant transformer and grid-connection interfaces.

For large projects, procurement teams should specify the required SPD classification, rated voltage, discharge characteristics, environmental requirements and documentation by electrical location.

DEHN offers engineering guidance for ground-mounted photovoltaic installations, including protection concepts for distributed power conversion equipment.

DEHN Official Photovoltaic Protection Resource

DEHN Surge Protection for Solar Inverters

Solar inverters contain sensitive electronic components that convert electricity between the DC and AC sides of a photovoltaic system.

A coordinated protection concept may include DC-side PV SPDs, AC-side SPDs and dedicated protection for connected communication circuits.

DEHN protection equipment may be considered for installations using suitably specified solar inverters from manufacturers such as:

• Deye – Hybrid inverters and residential or commercial energy storage solutions.
• SolaX Power – Residential and commercial hybrid inverter systems.
• Growatt – Grid-connected, hybrid and commercial inverter platforms.
• Huawei – Smart PV inverters and energy management systems.
• Fronius – Residential and commercial inverter technology.
• SMA – Photovoltaic inverters and energy management.
• Solis – String and hybrid solar inverter products.
• SolarEdge – Optimised photovoltaic inverter architectures.

These links connect related product ecosystems. They do not constitute a blanket manufacturer compatibility approval.

The exact protective device must be selected according to the inverter’s electrical specifications, installation architecture, internal protection equipment and applicable wiring requirements.

Browse Solar Inverters at 3Buy Solar

DEHN Surge Protection for Solar Batteries and BESS

Battery energy storage systems contain power electronics, battery management systems, communication networks, electrical distribution and auxiliary equipment.

These components may be exposed to transient overvoltages originating from connected electrical infrastructure.

Relevant protection locations can include:

• AC distribution feeding a battery energy storage system.
• Power conversion system connections.
• Suitable DC power circuits.
• Energy management and control equipment.
• Communication interfaces.
• Monitoring and auxiliary supplies.

Can a PV Surge Protector Be Used on a Battery DC Circuit?

Not automatically.

Photovoltaic DC circuits and battery DC circuits can have substantially different operating and fault-current characteristics.

A surge protective device designed for a photovoltaic string must not be assumed suitable for a battery circuit simply because its voltage rating appears similar.

Device selection must account for the intended application, maximum continuous operating voltage, DC fault behaviour, short-circuit protection and manufacturer’s permitted use.

Commercial Battery Energy Storage Protection

Commercial and industrial BESS installations require coordinated electrical protection according to their topology.

The protection concept may differ between:

• AC-coupled battery systems.
• DC-coupled hybrid PV and storage systems.
• Integrated commercial storage cabinets.
• Containerised battery energy storage.
• Grid-scale battery projects.

For related system procurement, see Solar Batteries and Energy Storage Solutions.

Surge protection forms one part of the overall electrical safety concept. It does not replace battery protection systems, overcurrent devices, contactors, thermal management or BMS safety functions.

DEHN Surge Protection for EV Chargers and Charging Infrastructure

EV charging equipment includes electrical power conversion, communication and control electronics that may require protection against transient overvoltages.

DEHN’s wider product portfolio addresses surge protection in electrical installations and specific charging infrastructure applications.

Depending on the installation, potential protection points include:

• Main electrical distribution.
• AC supply to EV chargers.
• Distribution boards serving multiple chargers.
• Suitable DC charging power circuits.
• Monitoring and communication infrastructure.
• Data connections and energy management interfaces.

Residential EV Chargers

For home EV charging, protective equipment must be coordinated with the installation’s supply characteristics, earthing system and charger manufacturer’s requirements.

Commercial EV Charging

Commercial installations with multiple EV charging points may need coordinated surge protection across shared distribution equipment, individual charging circuits and network infrastructure.

A DEHN DC photovoltaic arrester must not automatically be substituted for a device intended for DC fast-charging infrastructure.

Browse EV Chargers at 3Buy Solar

DEHN Communication and Monitoring Surge Protection

Modern photovoltaic and battery storage installations depend on digital communication.

Energy management controllers, inverter monitoring, data loggers, industrial networks and remote maintenance systems can use communication wiring that creates additional paths for transient disturbances.

DEHN offers dedicated communication protection products such as BLITZDUCTORconnect and DEHNpatch.

BLITZDUCTORconnect

BLITZDUCTORconnect products are intended for suitable signal, measurement and control circuits.

Selection depends on the signalling technology, nominal voltage, frequency, operating characteristics and electrical interface.

DEHNpatch

DEHNpatch products provide surge protection for supported Ethernet communication networks.

The correct variant must match the interface and transmission requirements, including any applicable Power over Ethernet conditions.

Protection Does Not Replace Good Network Design

Communication SPDs must be coordinated with cable shielding, earthing, separation, equipment interfaces and the wider lightning protection concept.

For systems requiring related cables and connections, see Solar Cables, Communication Wiring and Installation Accessories.

DEHN SPD Technical Selection Guide for Professional Installers

Correct surge protective device selection requires more than identifying Type 1 or Type 2.

The following technical parameters should be checked before purchasing.

Maximum PV String Voltage

The maximum open-circuit voltage of a solar PV string typically rises as module temperature decreases.

The string’s maximum design voltage must be calculated using the applicable minimum temperature and module electrical characteristics.

The selected DEHN PV arrester must support that calculated voltage within its published rating.

Voltage Protection Level

The SPD’s voltage protection level must be coordinated with the impulse withstand of the connected equipment.

Connection conductor length and installation geometry also affect effective protection.

Short-Circuit Withstand

The selected device must be suitable for the prospective fault conditions of the relevant circuit.

For photovoltaic products, the manufacturer’s Iscpv rating is particularly important.

Remote Status Monitoring

Selected DEHN surge protection devices offer remote status signalling.

This may be useful in commercial installations where maintenance teams need visibility into protective device status across several electrical locations.

Remote status monitoring supplements rather than replaces inspection and maintenance.

DEHN Standards, Certification and Electrical Compliance

European photovoltaic installations must be designed and installed according to the applicable electrical standards and their national adoption.

Relevant standards include:

• EN/IEC 61643-31: Surge protective devices for photovoltaic DC installations.
• EN/IEC 61643-11: Low-voltage surge protective devices for AC systems.
• IEC 60364-7-712: Requirements for solar photovoltaic electrical installations.
• IEC 60364-4-44: Protection against voltage disturbances and electromagnetic disturbances.
• IEC 62305 series: Protection against lightning.
• IEC 60364-5-53: Selection and erection of electrical equipment, including switching and protective devices.

Applicable editions and national requirements should be checked for the installation country.

Is a DEHN SPD the Same as a Lightning Protection System?

No.

An SPD is part of an electrical overvoltage protection concept.

Where an external lightning protection system is required, it may also include:

• Air-termination components.
• Down conductors.
• Earth termination.
• Equipotential bonding.
• Appropriate lightning current protection.
• Coordinated internal surge protection.

A surge arrester alone does not replace the functions of an external lightning protection system.

Does DEHN Provide CE and Technical Documentation?

DEHN publishes technical product information and documentation for its protective devices.

For professional procurement and project acceptance, the exact article number should be matched to the current manufacturer’s datasheet, applicable compliance documentation and installation instructions.

A certificate for one DEHN product series should not be treated as certification for another series.

DEHN Wholesale Procurement in Europe – 3Buy Solar B2B Shop

3Buy Solar supports professional solar PV and electrical equipment procurement for installers, EPC contractors, resellers, solar wholesalers and energy project buyers across Europe.

DEHN procurement can involve individual devices, recurring installer requirements or larger projects requiring multiple protection locations and coordinated electrical components.

DEHN Products for B2B Sourcing

Professional enquiries may cover:

• DEHNcombo YPV Type 1+2 DC surge arresters.
• DEHNguard photovoltaic Type 2 SPDs.
• DEHNcube PV protection enclosures.
• AC electrical surge protection products.
• Lightning protection and equipotential bonding equipment.
• Protection components for commercial PV.
• Suitable monitoring and communication protection products.
• Electrical protection requirements for BESS and EV charging infrastructure.

Availability, quantity and delivery arrangements are confirmed for each product enquiry.

DEHN Prices – What Determines a Professional Quotation?

The commercial price depends on the exact DEHN article number, protection classification, product configuration, quantity, delivery destination and current sourcing conditions.

For procurement comparisons, buyers should evaluate:

• Correct device specification.
• Manufacturer article number.
• Required SPD class.
• Electrical ratings and compatibility.
• Number of protected circuits.
• Installation accessories.
• Maintenance and replacement requirements.
• Technical documentation.
• Total delivered procurement cost.

A lower-cost device is not necessarily the correct choice when protection ratings, long-term availability or installation compatibility differ.

How to Request a DEHN Quotation

For an accurate quotation, provide:

1. DEHN article number or exact product description.
2. Required quantity and purchasing schedule.
3. Project application: Residential PV, commercial PV, solar park, BESS or EV charging.
4. Electrical configuration: AC/DC system voltage and relevant installation characteristics.
5. Required SPD type: Type 1, Type 2 or combined.
6. Delivery country and postcode.
7. Required documentation or tender specifications.
8. Associated components: Solar inverter, isolators, cabling or other protection equipment.

Where the correct device has not yet been selected, the enquiry should include sufficient design information to identify suitable manufacturer options.

Final electrical protection design and approval remain the responsibility of the appropriately qualified designer or installer.

Request DEHN Trade Pricing and Availability

Why Source DEHN Through 3Buy Solar?

3Buy Solar serves the European professional solar market with equipment sourcing for photovoltaic installations, solar inverters, battery storage, EV charging and electrical accessories.

Our B2B procurement approach focuses on technical product identification, commercial requirements and the wider system equipment needed to complete a project.

Professional Installer and EPC Procurement

3Buy Solar supports trade buyers with manufacturer-based product identification and project-specific enquiries.

Related Electrical Protection Components

DEHN surge protection may be purchased or specified alongside DC PV isolators, AC disconnect switches, solar cabling and other electrical installation accessories.

These products carry different electrical safety functions and must be selected accordingly.

Complete Solar PV Equipment Sourcing

For complete projects, professional customers can also browse:

• Solar Panels
• Solar Inverters
• Solar Batteries
• Energy Storage Solutions
• Complete Solar Kits
• Solar Accessories

This makes it possible to coordinate DEHN product enquiries with the wider photovoltaic system bill of materials.

European Procurement and Logistics

3Buy Solar supports professional purchasing for European projects through its B2B commercial processes and logistics arrangements.

Actual stock availability, warehouse origin, shipping method and delivery lead time are confirmed according to the specific order.

For products not listed in the live webshop, professional buyers can submit the exact DEHN reference and required quantity for a sourcing enquiry.

DEHN Official Manufacturer Technical Resources

For engineering approval and product selection, consult the current DEHN documentation.

• DEHN International – Official Manufacturer
• DEHNcombo YPV Type 1+2 Product Information
• DEHNcombo YPV Manufacturer Datasheet – PDF
• DEHN Photovoltaic Protection for Buildings
• DEHNcube Photovoltaic Protection Enclosures
• DEHN Photovoltaic Surge Protection Engineering

Technical ratings and installation requirements must always match the exact product ordered.

Frequently Asked Questions About DEHN

What is DEHN?

DEHN is a German manufacturer of surge protection, lightning protection, earthing, equipotential bonding and electrical safety equipment. Its products are used in photovoltaic installations, buildings, industrial facilities and electrical power systems.

What is DEHNcombo YPV?

DEHNcombo YPV is a combined Type 1+2 surge protective device family designed for photovoltaic generator circuits. It provides specified lightning impulse current discharge capability together with transient overvoltage protection.

What is DEHNguard YPV?

DEHNguard YPV is a family of Type 2 surge protective devices intended for photovoltaic DC systems, including suitable solar inverter input circuits and PV generator installations.

What is the difference between Type 1 and Type 2 surge protection?

Type 1 devices are designed for specified lightning impulse currents, while Type 2 devices are intended for limiting transient overvoltages from induced lightning effects and switching events. Type 1+2 products combine both functions.

Does a solar inverter need DC surge protection?

DC surge protection requirements depend on the installation, inverter characteristics, lightning exposure and relevant wiring standards. Solar inverter manufacturers may also specify protection requirements in their installation instructions.

Does a solar inverter need AC surge protection?

The AC installation should also be assessed for surge protection. The required device and installation location depend on the electrical network, earthing arrangement, existing protection and applicable standards.

Can DEHN surge protection be used with Deye, SolaX or Growatt inverters?

Appropriately specified DEHN devices can form part of installations using these inverter manufacturers. The correct selection depends on electrical ratings, installation topology and protection requirements rather than the inverter brand alone.

Can DEHN surge protectors be used with Huawei, Fronius, SMA or Solis?

Yes, suitable DEHN products can be evaluated for electrical systems using these manufacturers. The SPD must match the actual circuit and relevant installation requirements.

Can a Type 2 surge arrester replace a Type 1 arrester?

Not where Type 1 lightning current protection is required. The correct SPD classification must follow the installation’s lightning and surge protection design.

Does an integrated inverter SPD remove the need for external SPDs?

Not automatically. The integrated device’s class, rating, installation position and protection coordination must be assessed against the overall electrical installation requirements.

Can DEHN protect solar battery storage systems?

DEHN offers protection technologies relevant to electrical infrastructure used with battery energy storage. Device suitability depends on the specific AC or DC circuit and system architecture.

What is UCPV on a DEHN photovoltaic surge protector?

UCPV is the maximum continuous operating voltage for the photovoltaic SPD. It must be compatible with the maximum calculated DC voltage of the photovoltaic generator.

What does Iimp mean on a DEHN surge arrester?

Iimp describes a specified lightning impulse current capability, commonly characterised using a 10/350µs waveform for relevant Type 1 testing.

What does Up mean on a DEHN surge protective device?

Up is the voltage protection level determined under specified test conditions. It helps designers coordinate the SPD with the impulse withstand capability of protected equipment.

Can surge protection replace a DC isolator?

No. Surge protective devices limit transient overvoltages, while DC isolators provide circuit disconnection for relevant operational or maintenance requirements.

Can DEHN devices protect communication cables?

DEHN manufactures protection devices for suitable signal, measurement, control and Ethernet interfaces. The correct product depends on the electrical and communication specifications.

Is DEHN suitable for commercial and utility-scale photovoltaic systems?

DEHN offers protection solutions relevant to commercial rooftops, industrial electrical systems and ground-mounted solar projects. The protection concept must reflect the installation’s topology, earthing, lightning exposure and equipment ratings.

Where can I buy DEHN surge protection wholesale in Europe?

Professional buyers can submit sourcing and quotation enquiries through 3Buy Solar’s DEHN brand page and B2B contact page.

How do I request DEHN product pricing?

Provide the exact DEHN article number, quantity, application, required documentation and delivery destination through the 3Buy Solar contact and quotation page.

Buy DEHN Surge and Lightning Protection in Europe – 3Buy Solar B2B Supplier

Sourcing DEHNcombo Type 1+2 photovoltaic arresters, DEHNguard Type 2 SPDs, DC solar inverter protection or electrical safety components for a commercial solar installation?

3Buy Solar supports European installers, EPC contractors, electrical wholesalers and energy project buyers with professional equipment sourcing and project enquiries.

Whether your project involves rooftop solar panels, hybrid solar inverters, battery storage, EV chargers or larger photovoltaic infrastructure, correct electrical protection belongs in the original system design and procurement specification.

For DEHN sourcing, include the required model, quantity, electrical configuration and delivery destination.

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