Surge arrester type T1+T2, pole 1+NPE, Limp: 7 kA (10/350), In: 20kA (8/20), Imax: 50kA, Uc: 255V AC RSP-T1T2-AC 7/1+NPE 2617129

Protection of electrical installations against overvoltage

This surge protector, designed for AC installations, combines the functions of Type T1 and T2 protection, providing comprehensive protection against the effects of lightning strikes and network overvoltages. The 1+NPE (one phase pole plus neutral and protective earth conductor) design makes it an ideal solution for a wide range of applications in residential and commercial buildings.

Construction and application

This surge arrester utilizes a combination of varistors and spark gaps, allowing for a quick and effective response to sudden voltage increases. It is designed for installation in accordance with the protection zone concept LPZ 0-1, which means it works perfectly as the first line of defense against overvoltages in buildings. This protects connected electrical devices from damage caused by lightning strikes or disturbances in the power grid.

Key parameters and benefits

• High efficiency: Peak current Limp at 7 kA (10/350 μs) guarantees the ability to absorb even strong surge pulses.
• Wide range of protection: Rated discharge current In of 20 kA (8/20 μs) and maximum discharge current Imax at 50 kA provide effective protection against various types of overvoltages.
• Reliability: Maximum continuous operating voltage Uc equal to 255 V AC ensures stable operation of the device under normal operating conditions.
• Compliance with standards: The surge arrester is designed in accordance with IEC 61643-11:2011, which confirms its high quality and safety of use.
• Versatility: 1+NPE design simplifies installation and integration with existing electrical installations.

Thanks to these features, this surge arrester is a reliable solution for installers looking for effective overvoltage protection and for end users who value the safety of their electrical devices. Using this type of protection minimizes the risk of equipment failure and costly repairs, and also ensures continuity of power supply in the event of unforeseen events.