Surge arrester, 4P Type 1+2 (class B+C) type V50-3+NPE-280 5093526

Surge protection for electrical installations

Surge arrester V50-3+NPE-280 is a reliable device designed for comprehensive protection of electrical installations against the effects of lightning strikes and switching surges. Classified as Type 1+2 (class B+C), it effectively protects against both direct and indirect lightning strikes, ensuring the safety of equipment and installations. This is particularly important in residential, commercial and industrial buildings, as well as in facilities equipped with an external lightning protection system.

Design and functionality

The device consists of a base and a replaceable insert, making it easy to replace a damaged element without disassembling the entire housing. It has 4 poles (3-phase + N/PE), providing full circuit protection. A built-in optical status indicator allows for a quick assessment of the device's functionality – a green color indicates correct operation, red indicates the need to replace the insert. The use of a locking latch ensures a stable connection of the insert with the base and protects against the effects of vibration.

Application and compatibility

The V50-3+NPE-280 surge arrester is compatible with various network systems: TN-S, TN-C-S and TT. Designed for mounting on a 35 mm DIN rail, making it easy to integrate with existing electrical infrastructure. The maximum wire cross-section of 35 mm² allows connection of a wide range of flexible and rigid wires. The device is an ideal solution for systems requiring a high level of protection, such as AKPiA systems or installations powering sensitive electronic devices.

Key features and benefits

• High efficiency: The ability to discharge surge currents up to 12.5 kA (10/350 µs) per pole provides effective protection against overvoltages.
• Versatility: Compatibility with various network systems (TN-S, TN-C-S, TT) makes V50 arresters usable in a wide range of applications.
• Safety: The housing made of self-extinguishing plastic (UL 94 V-0) minimizes the risk of fire spreading in the event of a failure.
• Replaceable insert: Allows for quick and easy replacement of a damaged element without disassembling the entire housing.
• Optical status indication: Allows for visual control of the device's functionality.
• Mechanical protection: Locking latch protects against the effects of vibration and ensures a stable connection of the insert with the base.
• Low voltage protection level: <1.3 kV provides a high level of protection for connected devices.
• Halogen-free material: The housing made of a halogen-free material increases fire safety by reducing the emission of toxic gases during combustion.
• Energetically coordinated protection of the final device: no need to use additional preliminary protection up to 160A GL

The V50-3+NPE-280 surge arrester is an investment in the safety and reliability of the electrical installation, providing protection against costly failures and downtime caused by overvoltages.