Surge arrester, 4P Type 2 (class C) type V20-3+NPE+FS-150 5095321

Protection of electrical installations – reliable surge arrester

This four-pole, Class C Type 2 surge arrester is a key element in protecting electrical installations from the effects of sudden voltage increases. Designed for use with TN, TT, TN-S, TN-C-S and TN-C networks, it provides comprehensive protection for both installers and end-users. The V20-3+NPE+FS-150 model effectively protects against damage caused by lightning strikes or other disturbances in the network.

This arrester is characterized by a high short-circuit strength of 20 kA and the ability to dissipate a maximum discharge current of 40 kA (8/20). The rated peak discharge current is 20 kA. The protection level on L-N and N-PE lines is 20 kV, guaranteeing effective protection against overvoltages. Integrated backup protection and optical indication of operation facilitate diagnostics and rapid response in the event of a failure. Additionally, the presence of a remote signaling contact allows integration with monitoring and notification systems.

The arrester is easy and intuitive to install – it is mounted on a standard DIN TH-35 mm mounting rail. The device's design allows for the connection of wires with a cross-section of up to 352 mm², providing flexibility in wire selection and adaptation to various applications. The C characteristic means that the arrester reacts more slowly to short current surges, therefore it tolerates starting motors or other inductive loads well. This minimizes the risk of unnecessary tripping of protections during normal operation.

• Versatility: Compatible with various network configurations (TN, TT, TN-S, TN-C-S, TN-C).
• High efficiency: Provides a protection level of 20 kV on L-N and N-PE lines.
• Durability: Withstands short-circuit currents up to 20 kA and dissipates discharge currents up to 40 kA.
• Easy installation: Mounting on a standard DIN TH-35 mm rail.
• Diagnostics: Optical indication of operation and a remote signaling contact facilitate problem identification.
• Universal wires: Supports wires with a cross-section of up to 352 mm².
• Overload protection: Protects the circuit against overload and short circuit — like most circuit breakers in this class.
• Compliance with standards: Meets the required safety standards for overvoltage protection devices.