Varistor surge protector for photovoltaic installations SV C 3P SIMTEC 85034002

Photovoltaic installation protection – reliable surge arrester SV C 3P

This three-pole varistor surge arrester, designed for photovoltaic installations, is a key element ensuring the safety and long-term efficiency of your PV system. The device effectively protects against the effects of lightning strikes and other transient overvoltages that can damage sensitive installation components. This is particularly important in DC systems, where surges can lead to serious failures and downtime.

The SV C 3P surge arrester is designed for mounting on the DC side of photovoltaic generators and inverters. Its varistor-based design ensures a quick response to sudden voltage changes, limiting them to a safe level. This protects not only the installation itself but also the devices connected to it.

Characteristics and application

The device is characterized by a high protection level of 4.5 kV, which guarantees effective protection against damage caused by overvoltages. The rated DC voltage is 1000 V, and the maximum photovoltaic installation voltage is 1060 V – making it compatible with most modern PV systems. The follow current extinguishing capacity of 20 kA ensures safety even in the event of strong discharges.

This surge arrester is used in:

• Photovoltaic installations in residential buildings: Protecting home PV systems from the effects of storms and surges in the grid.
• Industrial installations: Protecting larger photovoltaic systems used in industrial plants and companies.
• Off-grid systems: Ensuring the reliability and durability of systems independent of the power grid.
• Commercial applications: Protecting photovoltaic installations on public and commercial buildings.

Functionality and installation

The SV C 3P surge arrester occupies 3 modules on a TS35 rail, which facilitates its integration with the existing electrical infrastructure. It has a signaling contact with optical indication of operation, informing about the need to replace the device after a surge. The possibility of connecting wires with a cross-section of up to 35 mm² (rigid) or 25 mm² (flexible) provides flexibility during installation. In addition, the high degree of protection IP20 guarantees safe use in standard environmental conditions. The mounting is fixed, which ensures the stability of connections for a long time.