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Surge protection, photovoltaics - OBO BETTERMANN

Surge protection for photovoltaic (PV) installations is a critical component in safeguarding your solar energy investment against transient overvoltages caused by lightning strikes or switching operations. These devices, often referred to as Type 1, Type 2, or Type 1+2 surge arresters, are designed to limit surge voltages and divert surge curren...

Surge protection for photovoltaic (PV) installations is a critical component in safeguarding your solar energy investment against transient overvoltages caused by lightning strikes or switching operations. These devices, often referred to as Type 1, Type 2, or Type 1+2 surge arresters, are designed to limit surge voltages and divert surge currents to ground, protecting inverters, panels, and other sensitive equipment. Key technical parameters include maximum continuous operating voltage (Uc), nominal discharge current (In), and maximum discharge current (Imax), typically rated for DC systems up to 1500V. OBO BETTERMANN offers a comprehensive range of PV-specific surge protection devices (SPDs) with robust enclosures rated IP65 or higher, ensuring reliable performance in outdoor environments.

These surge protectors are primarily installed in photovoltaic systems, including rooftop and ground-mounted solar arrays, solar farms, and building-integrated photovoltaics (BIPV). They are essential in DC combiner boxes, inverter DC inputs, and AC distribution boards downstream of the inverter. The devices are also used in industrial and commercial facilities with large-scale PV generation, as well as residential solar installations, to comply with international standards like IEC 61643-31 and EN 50539-11.

The main subcategories include Type 1 (Class I) surge arresters for direct lightning protection, Type 2 (Class II) for switching surge protection, and combined Type 1+2 devices. Key article codes from OBO BETTERMANN include the OB0505 series, such as OB0505V20 (Type 2, 20kA, 1000V DC) and OB0505V40 (Type 1+2, 40kA, 1500V DC). These codes typically follow a pattern where the first digits indicate the product family (OB0505), followed by a letter for the type (V for varistor-based), and numbers for the discharge capacity and voltage rating.

Partnering with Electric Automation Network ensures you receive genuine OBO BETTERMANN surge protection with real-time pricing and up to 65% discount. Our engineering team provides personalized technical support for selecting the correct SPD for your PV system, including coordination with existing protection. We offer express worldwide shipping, ensuring your critical components arrive quickly, and provide detailed technical documentation for each article.

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Manufacturer Code Reference Catalog Number Description Delivery Price

5088650

VG-C DCPH1000-4K

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Surge protection device PV systems, 4-string,

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5088660

VG-C DC-TS1000

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Surge protection device 2 PV string w. circuit breaker,

Generator connection box, type 2, up to 1,000 V DC with disconnection switch (32 A) for 1 x 1 string. System solution for circuit breaker photovoltaic inverter with 1 MPP tracker• Varistor arrester, connectable with cut-off unit in error-resistant Y circuit to VDE 0100-712 (50539-12) • Low DC protection level: < 4.0 kV (Voc max = 1,000 V DC with V2ß-B+C/0-500PV) • Circuit breaker (1,000 V; 32 A) for secure switch-off of the DC string cable• Per protection device, there is 1 terminal up to 6 mm² pre-mounted in the housing, up to 30 A DC per terminal • Pre-mounted in polycarbonate housing (IP65), UV-resistant for use outside, including cable gland kitFor DC protection of the inverter in photovoltaic systems.If there is a danger of condensation forming through wind, ice, temperature or sunl

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5088672

VG-C DCPH-Y1000

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Surge protection device type 2 for PV systems, 1000V DC,

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5088691

VG-C DCPH-MS1000

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Surge protection device type 2 multistring PV systems,

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5088694

VG-C DC-PH-MS

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Surge protection device for multistring PV systems,

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5088699

VG-C DC-PH-Y

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Surge protection device for photovoltaic systems,

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5093623

V50-B+C 3-PH600

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CombiController V50 three-pole for photovoltaics, 600V,

PV combination arrester V50, 600 V DC. V50 combination arrester, type 1+2, for photovoltaic systems• Complete unit, consisting of plug-in varistor arrester with cut-off unit• Error-resistant Y circuit to VDE 0100-712 (EN 50539-12)• Surge protection equipotential bonding to VDE 0100-443 (IEC 60364-4-44)• Arresting capacity up to 12.5 kA (10/350) and 50 kA (8/20) per pole• Low DC protection level: < 2.6 kV and Voc max = 600 V DC• With visual function display for use in distributor housings Application: PV systems with lightning protection system.

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5093625

V50-B+C 3PHFS600

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CombiController V50 three-pole for PV systems + FS, 600V DC,

PV combination arrester V50, 600 V DC with remote signalling. V50 combination arrester, type 1+2, for PV systems with FS contact as potential-free changeover• Complete unit, consisting of plug-in varistor arrester with cut-off unit• Error-resistant Y circuit for use according to VDE 0100-712 (EN 50539-12)• Surge protection equipotential bonding to VDE 0100-443 (IEC 60364-4-44)• Arresting capacity to 12.5 kA (10/350) and 50 kA (8/20) per pole• Low DC voltage protection level: < 2.6 kV and Voc max. = 600 V DC• With visual display for use in distributor housingsApplication: PV systems with lightning protection system

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5093628

V50-B+C 2-PH600

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CombiController V50 two-pole for photovoltaics, 600V,

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5093629

V50-B+C 2PHFS600

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CombiController V50 2-pole for PV systems with FS, 600V DC,

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5093726

V50-B+C 0-300PV

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CombiController V50 plug-in arrester f. PV systems, 300V DC,

PV CombiController V50, plug-in arrester, type 1+2. CombiController upper part – type 1+2, combination arrester for photovoltaic systems• For surge protection equipotential bonding to VDE 0100-443 (IEC 60364-4-44)• Arresting capacity to 12.5 kA (10/350) and 50 kA (8/20) per pole• Low DC voltage protection level: < 1.3 kV per pole (Y circuit: 2.6 kV and Voc max = 600 V DC)• Plug-in arrester with thermodynamic cut-off unit and visual function display• Encapsulated, zinc oxide varistor arrester for use in distributor housings• High current carrying capacity with long lifespan Application: PV systems with lightning protection systemPlug-in arrester

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5094572

V20-C 2PHFS-600

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SurgeController V20 2-pole for PV systems with FS, 600V DC,

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5094574

V20-C 3PHFS-1000

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SurgeController V20 three-pole for photovoltaics, 1000V DC,

PV surge protection V20, 1,000 V DC with remote signalling. V20 surge arrester, type 2, for photovoltaic systems• Complete unit, consisting of plug-in varistor arrester with cut-off unit• Error-resistant Y circuit to VDE 0100-712 (EN 50539-12)• Surge protection equipotential bonding to VDE 0100-443 (IEC 60364-4-44)• V20-C 3-PH-1000 tested to EN 50539-11 (VDE / KEMA)• Arresting capacity to 40 kA (8/20) per pole• Low DC protection level: < 4.0 kV and Voc max = 1,000 V DC• With visual status display for use in distributor housings Application: PV systems with or without separate lightning protection system

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5094576

V20-C 3PHFS-600

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SurgeController V20 three-pole for PV systems + FS, 600V DC,

PV surge protection V20, 600 V DC with remote signalling. V20 surge arrester, type 2, for PV systems with FS contact as potential-free changeover• Complete unit, consisting of plug-in varistor arrester with cut-off unit• Error-resistant Y circuit for use according to VDE 0100-712 (EN 50539-12)• For surge protection equipotential bonding to VDE 0100-443 (IEC 60364-4-44)• Arresting capacity to 40 kA (8/20) per pole• Low DC protection level: < 2.6 kV (Voc max = 600 V DC)• Arrester, connectable with thermodynamic cut-off unit and visual function display• Encapsulated, zinc oxide varistor arrester for use in distributor housings Application: PV systems with or without separate lightning protection system

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5094605

V20-C 3PH-600

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SurgeController V20 three-pole for PV systems, 600V DC,

V20 V20-C 3PH-600.4 pole surge arrester for system. photovol. 600V DC ,

V20 photovoltaic surge protection, 600V DC. V20 Type 2 surge arrester for photovoltaic systems• Complete unit with plug-in varistors arrester with disconnector• Fail-safe star connection according to VDE 0100-712 (IEC 50539-12)• For equipotential surge protection connection according to VDE 0100-443 (IEC 60364-4-44)• Discharge capacity of up to 40 kA (8/20) per pole• Low DC protection level: < 2.6 kV (max. uoc = 600 V DC)• Plug-in arrester with thermodynamic disconnector device and visual operating indication• Discharger based on encapsulated zinc oxide varistors for installation in control cabinets Application: photovoltaic systems with or without an isolated lightning protection system

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5094608

V20-C 3-PH-1000

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SurgeController V20 three-pole for photovoltaics, 1000V,

PV surge protection V20, 1,000 V DC. V20 surge arrester, type 2, for photovoltaic systems• Complete unit, consisting of plug-in varistor arrester with cut-off unit• Error-resistant Y circuit to VDE 0100-712 (EN 50539-12)• Surge protection equipotential bonding to VDE 0100-443 (IEC 60364-4-44)• V20-C 3-PH-1000 tested to EN 50539-11 (VDE / KEMA)• Arresting capacity to 40 kA (8/20) per pole• Low DC protection level: < 4.0 kV and Voc max = 1,000 V DC• With visual status display for use in distributor housings Application: PV systems with or without separate lightning protection system

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5094613

V20-C 2PH-600

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SurgeController V20 two-pole for photovoltaics, 600V DC,

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5094615

V20-C 2PHFS-1000

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SurgeController V20 2-pole for PV systems with FS, 1000V DC,

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5094617

V20-C 2-PH-1000

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SurgeController V20 two-pole for photovoltaics, 1000V,

PV surge protection V20 2pole 1000 V DC. V20 surge arrester, Type 2, for earthed photovoltaic systems• Complete unit consisting of varistor arrester with cut-off unit• For PV systems directly earthed on DC side to VDE 0100-712 (EN 50539-12)• Surge protection equipotential bonding to VDE 0100-443 (IEC 60364-4-44)• V20-C 3-PH-1000 tested to EN 50539-11 (VDE / KEMA)• Arresting capacity to 40 kA (8/20) per pole• Low DC voltage protection level: < 4.0 kV and Voc max = 1,000 V DC• With visual function display for use in distributor housings Application: Directly earthed PV systems with or without isolated lightning protection system

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5096626

V20-C U-3PH

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Socket V20, V25 and V50, fotov., For photovoltaic installation,

Base for photovoltaic systems V20 and V25 U-3PH. V 20-C/U...: Base for photovoltaic systems (Δ-circuit) • Suitable for V 50-B+C and V25-B+C covers, types 1+2, combination arresters• Suitable for V 20-C covers, type 2, surge arresters• Protection circuit against transverse and longitudinal voltages• Δ-circuit• Low DC voltage protection level: < 2.4 kV (Voc max = 745V DC with V20-C/0-550)• Low DC voltage protection level: < 1.5 kV (Voc max = 505V DC with V25-B+C/0-385)• Low DC voltage protection level: < 1.3 kV (Voc max = 350V DC with V50-C/0-280)• Labelled connections Application: In photovoltaic systems between PV modules and inverters.V 20-C/U-3: Base • Suitable for V 25-B+C or V 20-C • Labelled connections• For Y circuits in PV systems (With cover V20-C/0-440; Voc suitable to 1,000 V D

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5096634

V20-C U-3PH-FS

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Socket V20, V25 and V50, fotov., For photovoltaic installation,

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5096637

V20-C U-2 PH

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Photovoltaic base for earthed systems,

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5096639

V20-C U-2 PH+FS

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Photovoltaic base for earthed systems with FS,

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5096646

V20-C U-3PH-Y-FS

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Bottom part V20 and V25 for photovoltaic,

PV base, 3-pole in Y circuit with remote signalling. Base for photovoltaic systems up to Voc = 1,000 V (Y circuit) • Suitable for V 50-B+C and V25-B+C covers, type 1+2, combination arrester• Suitable for V 20-C upper parts, type 2, surge arresters• Protection circuit against transverse and longitudinal voltages• Y circuit• Low DC voltage protection level: < 4.0 kV (Voc max = 1,000 V DC with V20-C/0-440)• Low DC voltage protection level: < 3.0 kV (Voc max = 900 V DC with V25-B+C/0-385)• Low DC voltage protection level: < 2.6 kV (Voc max = 600 V DC with V50-B+C/0-280)• FS with remote signalling and potential-free changeover contact for function monitoring• Labelled connections Application: In photovoltaic systems between PH modules and inverters.

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5096647

V20-C U-3PH-Y

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Photovoltaic base with Y connection,

PV base, 3-pole in Y circuit. Base for photovoltaic systems up to Voc = 1,000 V (Y-circuit) • Suitable for V 25-B+C upper parts, type 1+2, combination arresters• Suitable for V 20-C upper parts, type 2, surge arresters• Protection circuit against transverse and longitudinal voltages• Y-protection circuit• Low DC voltage protection level: < 4.0 kV (Voc max = 1,000 V DC with V20-C/0-440)• Low DC voltage protection level: < 3.0 kV (Voc max = 900 V DC with V25-B+C/0-385)• Low DC voltage protection level: < 2.6 kV (Voc max = 600 V DC with V50-C/0-280)• Labelled connectionsApplication: In photovoltaic systems between PH modules and inverters.

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5097065

V25-B+C 0-450PV

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CombiController V25 plug-in arrester f. PV systems, 450V DC,

PV CombiController V25, plug-in arrester, type 1+2. CombiController upper part - type 1+2, combination arrester for photovoltaic systems• For surge protection equipotential bonding to VDE 0100-443 (IEC 60364-4-44)• Arresting capacity to 7 kA (10/350) and 50 kA (8/20) per pole• Low DC voltage protection level: < 1.5 kV per pole (Y circuit: 3.0 kV and Voc max = 900 V DC)• Plug-in arrester with thermodynamic cut-off unit and visual function display• Encapsulated, zinc oxide varistor arrester for use in distributor housings• High current carrying capacity with long lifespan Application: PV systems with lightning protection system

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5097447

V25-B+C 3-PH900

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CombiController V25 three-pole for photovoltaics, 900V,

PV combination arrester V25, 900 V DC. V25 combination arrester, type 1+2, for photovoltaic systems• Complete unit, consisting of plug-in varistor arrester with cut-off unit• Error-resistant Y circuit to VDE 0100-712 (EN 50539-12)• Surge protection equipotential bonding to VDE 0100-443 (IEC 60364-4-44)• Arresting capacity up to 7 kA (10/350) and 50 kA (8/20) per pole• Low DC protection level: < 3.0 kV and Voc max = 900 V DC• With visual function display for use in distributor housings Application: PV systems with lightning protection system

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5097448

V25-B+C 3PHFS900

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CombiController V25 three-pole for PV systems + FS, 900V DC,

Combined discharger V25 V25-B+C 3PHFS900 3 pole system. photovoltaics+FS 900V DC

PV combination arrester V25, 900 V DC with remote signalling. V25 combination arrester, type 1+2, for PV systems with FS contact as potential-free changeover• Complete unit, consisting of plug-in varistor arrester with cut-off unit• Error-resistant Y circuit for use according to VDE 0100-712 (EN 50539-12)• Surge protection equipotential bonding to VDE 0100-443 (IEC 60364-4-44)• Arresting capacity to 7 kA (10/350) and 50 kA (8/20) per pole• Low DC protection level: < 3.0 kV and Voc max. = 900 V DC• With visual display for use in distributor housings Application: PV systems with lightning protection system

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5097457

V25-B+C 2-PH900

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CombiController V25 two-pole for photovoltaics, 900V,

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5097458

V25-B+C 2PHFS900

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CombiController V25 2-pole for PV systems with FS, 900V DC,

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