Surge protector for photovoltaics TYPE 1+2 1100VDC + contact, two strings SPPVRT12-10-4+PE+AX EP-501957

Photovoltaic installation protection – surge arrester SPPVRT12-10-4+PE+AX

This surge arrester, class 1+2, designed for photovoltaic installations, is a key element ensuring the safety and reliability of the system. It provides protection against the effects of lightning strikes and overvoltages from the grid, minimizing the risk of damage and downtime. The device is designed to operate with a DC voltage of up to 1000V and protects two photovoltaic strings.

Functionality and application

The SPPVRT12-10-4+PE+AX surge arrester effectively suppresses voltage surges, protecting sensitive components of the photovoltaic installation, such as inverters, solar panels and cabling. Its design based on type 1+2 technology means that it provides both initial protection against direct lightning strikes (class 1) and effective protection against switching surges (class 2). An auxiliary contact enables remote signaling of the device's operation, allowing for quick identification of problems and taking appropriate repair actions. Mounting is done on a standard DIN TH-35 mm rail, which facilitates integration with the existing infrastructure.

Key features and benefits

• Versatile protection: The combination of class 1 and 2 provides comprehensive protection against various types of overvoltages.
• Status indication: Built-in auxiliary contact informs about the arrester operation, facilitating diagnostics.
• High efficiency: Impact current of 10 kA and rated discharge current of 20 kA guarantee effective protection even in the event of strong surges.
• Safety: Protection level of 3.8 kV minimizes the risk of damage to connected devices.
• Solid construction: Housing with a protection degree of IP20 provides resistance to dust and moisture under typical indoor installation conditions.
• Installation flexibility: Mounting on a DIN TH-35 mm rail facilitates integration with existing electrical infrastructure.
• Wide range of wires: Support for wires with a cross-section of up to 35 mm² (solid/stranded) and 25 mm² (flexible) ensures compatibility with various types of cabling used in photovoltaic installations.
• Energy saving: Specific energy at a level of 6.25 kJ/Ohm allows for effective absorption of surge energy without excessive loading of the installation.

This arrester is characterized by an impact current of 10 kA, a rated discharge current of 20 kA and a protection level of 3.8 kV. It operates at a rated DC voltage of 1000 V and is designed to protect four conductors without grounding. It has optical indication of operation and an auxiliary contact for remote signaling.

This arrester complies with IEC 61643-31:2018, which confirms its high quality and reliability. It is an investment in the long-term safety and efficiency of your photovoltaic installation – both for professional installers and end users.