Surge arrester, 4P Type 1+2 (class B+C) type V50-3+NPE+FS-280 5093533

Electrical installation and device protection – surge arrester V50-3+NPE+FS-280

This four-pole surge arrester of class 1+2 (B+C) is a key element of the system protecting against the effects of lightning strikes and overvoltages in electrical installations. It provides comprehensive protection for both residential and commercial buildings, protecting sensitive electronic devices from damage. Its versatility makes it an ideal solution for both installers and end-users.

### Design and functionality

This arrester is designed for mounting on a DIN TH-35 mm mounting rail and occupies 4 modules. Its construction based on a combination of varistors and a spark gap (3+NPE) ensures effective protection in various network configurations: TN-S, TN-C-S and TT. It is worth noting the built-in signaling contact, which optically informs about the operation of the arrester, facilitating quick identification of damage and the need to replace the insert. The maximum conductor cross-section, both solid and stranded, and flexible, is 35 mm², allowing connection of a wide range of cables of different thicknesses.

### Safety and compliance with standards

The V50-3+NPE+FS-280 arrester meets the requirements of EN 61643 standard confirmed by a VDE certificate. It provides a protection level of up to 1.3 kV between phase and neutral (L-N) and 1.5 kV between neutral and earth (N-PE). The housing made of self-extinguishing plastic (UL 94 V-0) further increases safety. In addition, the use of halogen-free materials minimizes the risk of toxic gas formation in the event of a fire, protecting health and property. The follow current extinguishing capacity is 0.1 kA, providing additional safety in the event of a short circuit.

* **Versatility:** Compatible with TN-S, TN-C-S and TT networks – one device for different types of installations.

* **Status indication:** Built-in signaling contact with optical damage indication facilitates diagnostics and insert replacement.

* **High efficiency:** Ability to discharge surge currents up to 12.5 kA (10/350 µs) per pole protects against the effects of lightning strikes.

* **Material safety:** Housing made of halogen-free plastic minimizes the emission of toxic gases in the event of a fire.

* **Universal conductor cross-section:** Support for conductors up to 35 mm² ensures compatibility with various electrical installations.

* **Low protection level:** Residual voltage below 1.3 kV provides better protection for devices sensitive to overvoltage.