Surge arrester type T2, pole 1+NPE, In: 20kA (8/20), Imax: 40kA, Uc: 255V AC RSP-T2-AC/1+NPE 2617135

Protection of electrical installations against overvoltage

The RSP-T2-AC/1+NPE surge arrester is a key element in protecting electrical installations in residential and commercial buildings. This Class T2 device, with a 1+NPE configuration, effectively protects against the effects of lightning strikes and overvoltages in the power supply network. Its task is to minimize the risk of damage to sensitive electronic devices, such as RTV equipment, computers, or home automation systems.

Construction and application

This arrester utilizes a combination of a varistor and a spark gap, providing a quick response to overvoltages and a high energy dissipation capacity. It is designed for installation in main electrical distribution boards (MB) in TN networks. The 1+NPE configuration means that it limits overvoltages in the phase, neutral, and protective (PE) conductors, providing comprehensive protection. Using the arrester in the installation allows compliance with safety standards and ensures long-term system reliability.

Key features and benefits

• High protection efficiency: Rated discharge current In at 20kA (8/20) and maximum discharge current Imax 40kA guarantee effective protection against even strong overvoltages.
• Versatile application: Designed for AC networks with a voltage of 255V, ideal for protecting various electrical installations.
• Fast response: The combination of a varistor and a spark gap ensures a lightning-fast reaction to sudden voltage changes.
• Status indicator: Built-in mechanical status indicator (green/red flag) facilitates quick assessment of the device's condition after an overvoltage event – allowing for efficient identification of the need to replace the insert or the entire arrester.
• Compliance with standards: Meets the requirements of IEC 61643-11:2011, ISO 9001 standards and has CE and RoHS certificates, confirming its high quality and safety of use.
• Solid modular construction: Allows easy replacement of protective inserts without the need to disassemble the entire device – this translates into saving time and maintenance costs.
• Designed for TN networks: Optimized for operation in popular TN networks, providing optimal protection in typical installation conditions.

The RSP-T2-AC/1+NPE surge arrester is an investment in the safety and reliability of the electrical installation, protecting valuable devices from damage caused by overvoltages.