Surge limiter insert type V20-0-385 5095368

Surge protection in electrical installations

This V20-0-385 surge limiter insert is a key element ensuring the safety and reliability of the electrical installation. Designed to protect against the effects of current surges and overvoltages, it provides a reliable barrier for sensitive devices. It is a class 2 component, which means it works perfectly as a complement to basic protection (class 1) or as a standalone protection in installations with medium risk.

Functionality and application

This insert, mounted on a base, is designed to work with various network systems – TN, TN-S, TN-C-S and TT – making it a universal solution for a wide range of applications. Its task is to limit overvoltages to a safe level, protecting connected devices from damage. Optical indication of operation allows for quick identification of a situation requiring replacement of the insert. Short-circuit strength at 20 kA and current discharge capacity up to 40 kA (8/20) guarantee effective protection even with strong current surges.

Key features and benefits

• Versatility: Compatibility with various network systems (TN, TN-S, TN-C-S, TT) allows for use in many types of installations.
• High efficiency: Current discharge capacity up to 40 kA (8/20) provides effective protection against overvoltages.
• Quick diagnostics: Optical indication of operation facilitates identification of a damaged insert and quick replacement.
• Safety: Protection level of 1.7 kV (L-N) and 20 kV (N-PE) minimizes the risk of damage to devices.
• Compact size: Occupies only 1 module, making it easy to install even in crowded switchboards.
• Solid construction: Made of self-extinguishing plastic (UL 94 V-0), providing fire safety.
• Large wire cross-section: Support for wires with a maximum cross-section of 352 mm² allows connection of even thick power cables.

The rated AC voltage is 230 V, and the maximum discharge current (8/20) is 40 kA. The short-circuit strength (Isccr) reaches 20 kA, and the protection level L-N is 1.7 kV, while N-PE is 20 kV. The degree of protection (IP) is IP20.

By choosing this surge-limiting insert, you are investing in the long-term safety of your electrical installation and protecting valuable devices from costly failures caused by overvoltages. This is particularly important in areas prone to frequent storms or power quality problems.