Surge protectors for solar | photovoltaic systems
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Surge protectors for solar (photovoltaic) systems are an essential part of the protection circuit, ensuring long-term equipment operation and human safety. Solar power plants (PV systems) operate continuously in outdoor conditions and are therefore sensitive to atmospheric phenomena such as lightning discharges or power grid disturbances. Due to these factors, photovoltaic equipment may experience dangerous short-term voltage spikes (surges) that damage modules, inverters, controllers, and other systems.
Surge protectors (SPD – Surge Protective Devices) absorb or divert these surges to the ground, protecting equipment from failures and costly repairs.Functions
Effectively diverts lightning or grid disturbance energy to the ground
Protects inverters, controllers, and PV modules from electrical overloads
Protects both the DC side (from modules to inverter) and the AC side (from inverter to power grid)
Provides wear or fault indication through a color indicator
Allows quick replacement of the protection module without replacing the entire device
Ensures compliance with international electrical installation standards
Applications
Solar power plants on rooftops – in residential houses, companies, farms
Large solar parks – commercial and industrial installations
Separate PV module blocks – as local surge protection
Off-grid systems – solar equipment with batteries and hybrid inverters
AC network input – protection from power supply disturbances
Recommendations
Select the protector according to system voltage (600 V, 1000 V, 1500 V DC) and type (T1, T2, T1+T2)
Install close to the protected equipment – reducing cable length between protector and device
Ensure good grounding system (low resistance ≤ 10 Ω)
Regularly check the indicator and replace the module if necessary
Combine DC and AC side protections – ensuring comprehensive PV system protection
Pros
Wide range of models for various voltages and installations
Replaceable modules – lower maintenance costs
Fast response to surges
Meets international standards – safety guarantee
Cons
Requires professional installation – ineffective if installed incorrectly
Not permanent – modules must be replaced after strong surges
Surge protectors for solar (photovoltaic) systems are an integral part of a safe and reliable PV installation. They protect against lightning, grid disturbances, and sudden voltage spikes that can damage inverters, modules, or other equipment. Properly selected and professionally installed protectors not only extend the system's lifespan but also reduce repair costs. This is an investment that pays off in both industrial and residential projects, ensuring stable and efficient solar energy production.
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Modular surge protective device for photovoltaic systems | 2P | 40 kA | 1000 V DC | DIN | ES-TXSD-R240KACode: ES-TXSD-R240KAPrice 20.33 € VAT incl.( 16.80 € VAT excl. )
Modular | surge protector for solar power | photovoltaic systems | 3P | 40kA | 1500VDC | DINCode: ES-TXSD-340KAPrice 26.14 € VAT incl.( 21.60 € VAT excl. )
Modular | surge protector for solar power | photovoltaic systems | 2P | 20-40kA | 1000VDC | DINCode: ES-TXSD-40KAPrice 18.30 € VAT incl.( 15.12 € VAT excl. )
Price 16.94 € VAT incl.( 14.00 € VAT excl. )
Price 24.20 € VAT incl.( 20.00 € VAT excl. )
