Varistor surge protector for photovoltaic installations 3P, 1000V DC SPMO40C\3P-PV1000

Photovoltaic system protection – key to reliability

Photovoltaic installations, exposed to overvoltages caused by lightning strikes, grid switching, or system instability, require solid protection. Damage to inverters, charge controllers, or PV panels is a serious loss, which is why the use of surge protective devices (SPDs) has become a standard design practice. This three-phase surge protector SPMO40C\3P-PV1000 is an advanced protective device specifically designed for photovoltaic installations up to 1000V DC.

Construction and principle of operation

The SPMO40C\3P-PV1000 surge protector is type T2, class C and is based on varistor technology. Varistors instantly change their resistance when an overvoltage occurs, dissipating excess energy to ground and reducing the voltage to a safe level. This protects sensitive components of the PV installation from damage. Class C means that the device reacts quickly to voltage surges, which is particularly important in the case of switching and induced surges.

Application and benefits

This surge protector is used both in new photovoltaic installations – where it is often an element required by standards (PN-EN 61643, PN-HD 60364-7-712) – and in modernized systems. Installing the device significantly improves the safety and durability of existing installations. It is universal and will work both in ground-mounted and roof-mounted systems, especially in regions with high thunderstorm activity.

• Protection against damage: Protects inverters, charge controllers and photovoltaic panels from the effects of overvoltages.
• Compliance with standards: Meets the design standards requirements for surge protection in PV installations.
• Versatility: Suitable for new and modernized photovoltaic systems.
• Fast reaction: Varistor technology ensures rapid dissipation of excess energy.
• Durability: Provides long-term protection of the photovoltaic installation.

Installation and safety

Remember! Installation and connection of the device should be performed only by qualified electrical personnel with appropriate permissions. Proper grounding and connection sequence (polarity in DC systems) are essential. The surge protector should be part of a comprehensive protection system, including protection on the AC side of the inverter. Incorrect installation may result in lack of protection or damage to the device.