Surge Protection Device (SPD) for Solar Power System / Photovoltaic or PV System

Surge Protective Devices (SPDs) provide protection against electrical surges and spikes, including those caused directly and indirectly by lightning. They can be utilized as complete devices or as components within electrical equipment.

Photovoltaic (PV) system converts solar energy into direct current electricity. PV system ranges from small, rooftop-mounted or building-integrated systems with capacities from a few to several tens of kilowatts, to large utility-scale power stations of hundreds of megawatts. The potential impact of lightning events increases with PV system size. At locations with frequent lightning, unprotected PV systems will suffer repeated and significant damages. This results in substantial repair and replacement costs, system downtime and loss of revenue. Properly installed surge protective devices (SPDs) will minimize the potential impact of lightning events.

Sensitive electrical equipments of PV system like AC/DC Inverter, monitoring devices and PV array must be protected by surge protective devices (SPD).

Class 1+2 Type 1+2 SPD for PV Solar DC - Prosurge-400

Class I+II / Type 1+2 Surge Protection Device (SPD) for PV / Solar / DC

  • Non-pluggable T1+2 PV SPD with high energy MOV/VT technology
  • High lightning current discharge capacity up to Iimp 12.5kA 10/350
  • Prewired V or Y protection circuit, for common mode & differential mode protection
  • Degradation indication & optional remote signal contact
  • Lower voltage protection level
  • Model with VT technology to eliminate leakage current & follow current for better reliability and robustness
  • Comply with EN/IEC61643-31, EN50539-11, UL 1449 4th, IEEE C62.41, CSA C22.2
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Class II / Type 2 Surge Protection Device (SPD) for PV/Solar/DC

Prosurge SPV series is a Type 1ca SPD (Surge Protective Device) according to UL 1449 4th Ed and Type 2 SPD per IEC 61643-31 or EN 50539-11. It is designed for photovoltaic system DC side protection against the damage from surges caused by lightning and other electrical sources.

  • Rating:
    • Max. Permitted DC Voltage (Vpvdc): 85-1500Vdc
    • Surge capacity (8/20 μs):50kA
    • SCCR:100kA – tested without external CB or fuse
  • UL recognized Type 1ca SPD (ANSI/UL1449 4th), Type 2ca SPD (CSA-C22.2 ) Type 2 SPD (IEC 61643-31 or EN 50539-11) for PV/ Photovoltaic system (UL File No. E319871).
  • Pluggable design with window fault indication
  • Remote alarm signal optional
  • Meet worldwide standards: UL 1449 4th, IEC 61643-31: 2018 & EN 50539-11: 2013
  • Global patented thermal disconnector design with arc extinguishing device, fail-safe & self-protected, quick thermal response and perfect circuit cut-off function. No additional over-current protection devices required.
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Surge Protection Modules for DC PV System – PCB Mount

Prosurge’s SPM series are surge protection modules which are heavy MOV based devices and are constructed with Prosurge thermal protection and arc extinguishing technology. They can be easily integrated or mounted on PCB and are the best choice for global customers to develop PV SPD at minimum cost.

  • Rating:
    • Max. Permitted DC Voltage (Vpvdc): 85-825Vdc
    • Surge capacity (8/20 μs):50kA
    • SCCR:100kA – tested without external CB or fuse
  • UL recognized Type 1ca SPD (ANSI/UL1449 4th), Type 2ca SPD (CSA-C22.2 ) for PV/ Photovoltaic system (UL File No. E319871).
  • Meet IEC 61643-31: 2018 & EN50539-11: 2013
  • Quick thermal response and perfect circuit cut-off function due to special thermal disconnector design with arc extinguishing device
  • Wide operating temperature range and high reliability
  • High surge current capacity and low leakage current
  • Floating remote signaling contact for fault indication while additional uses of PVD_Base
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Pluggable PV SPD Module PCB Installation Illustration

Surge Protection for PV System

PV systems are exposed to both direct and indirect lightning events. The impact of lightning events increases with PV system size. Poorly protected PV systems will suffer repeated and significant damages and thus result in substantial repair and replacement costs, system downtime and loss of revenue. Properly installed surge protective devices (SPDs) will minimize the potential impact of lightning events.

Sensitive electrical equipment of PV system like AC/DC inverter, monitoring devices and PV array must be protected by surge protective devices (SPD).

PV System is a victim of lightning and surge damage

Surge Protection Device for PV System

Prosurge offers extensive surge protection device per IEC, EN and UL standards

Installation of Surge Proteciton Device in PV System

surge protection device for solar pv system
Prosurge Model Surge Capacity Mounting
SPV 50kA per Mode DIN-RAIL
SP 50kA per Mode DIN-RAIL
PSP 200kA per phase Hardwired

Another Option For Inverter Manufacturer

Besides adopting external SPD, inverter manufacturers can put our UL approval PV SPD module inside your inverter at designing.

Prosurge Surge Protection Device Products Family

Click to explore our extensive surge protection devices and other lightning protection products.

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For North American market, please contact

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