Surge arrester, 4P Type 2 (class C) type V20-4+FS-550 5095314

Electrical installation protection – reliable surge arrester

This four-pole type 2 surge arrester, class C, is a key element ensuring the safety and continuity of the electrical installation. Designed to protect against the effects of surges in both residential and industrial buildings, it provides reliable protection for connected devices. The construction based on high-performance varistors guarantees effective discharge of current up to 40 kA (8/20) per pole.

This arrester is used for potential equalization in main and sub-distribution boards, in accordance with VDE 0100-443 (IEC 60364-4-44). Its versatility is confirmed by its applicability in various network configurations: TN, IT, TN-S, TT, TN-C-S and TN-C. This makes it a solution tailored to a wide spectrum of installations.

Functionality and construction for professionals

The arrester is mounted on a standard DIN TH-35 mm mounting rail, which facilitates and speeds up installation. Short-circuit strength at 20 kA ensures resistance to damage during short circuits in the installation. Optical indication of operation allows for quick identification of a faulty module, and an optional remote signaling contact (NC/NO) enables integration with monitoring and alarm systems.

It is worth noting the mechanical protection of the inserts – it protects against the effects of vibration and provides voltage coding, which minimizes the risk of incorrect installation. The housing made of self-extinguishing plastic (UL 94 V-0) further increases safety. The size of 4 modules allows for efficient use of space in the distribution board.

Key features and benefits

• High protection efficiency: The ability to discharge current up to 40 kA (8/20) provides protection against damage caused by surges.
• Versatility: Compatibility with various network configurations (TN, IT, TN-S, TT, TN-C-S, TN-C) means that the arrester can be used in many installations.
• Easy diagnostics: Optical indication of operation and a remote signaling contact facilitate identification of faulty modules and a quick response.
• Safety: Self-extinguishing housing (UL 94 V-0) minimizes the risk of fire spreading in the event of a failure.
• Durability: Mechanical protection of the inserts protects against the effects of vibration and ensures stable operation of the device for a long time.
• Protection level: Provides a protection level of 2.4 kV L-N and 20 kV N-PE – high protection against various types of surges.
• Compliance with standards: Meets safety and quality standards, guaranteeing reliable operation.
• Maximum discharge current: Up to 40 kA (8/20) - a high value means better protection against strong surges.
• Rated discharge current: 15 kA - an important parameter determining the ability to dissipate energy during atmospheric discharges or network disturbances.

This surge arrester is an investment in the safety and reliability of the electrical installation – both for professional installers looking for proven solutions and for end users who value the protection of their electrical appliances.