Surge arrester for high-voltage applications, T1+T2, 400V AC, Iimp: 22 kA (10/350), Imax: 100 kA, Uc: 440V AC RSP-EH25/100-440/10 2617373

Surge protection for high-voltage installations

This surge arrester class T1+T2 is designed to protect sensitive electrical equipment in 400V AC networks. Its plug-in design and protection class I+II (T1+T2) provide comprehensive protection against the effects of voltage surges, both direct and indirect. This is a key solution for ensuring the continuity of operation of the installation and the safety of connected receivers.

The arrester is characterized by high impulse current withstand parameters – the peak current Iimp is as high as 22kA (10/350), and the maximum discharge current Imax is 100kA. The rated discharge current at 25kA guarantees effective protection under typical operating conditions. This makes these arresters ideal for applications requiring high reliability and interference resistance.

Design and functionality

The device is intended for single-phase networks and uses single-pole VT technology with a Uc voltage of 440V AC. The compact width of 36mm per pole makes it easy to install even in crowded switchboards. In addition, the arrester is equipped with a potential-free contact, which enables remote fault signaling – which is extremely important for rapid response in the event of a failure and minimizing downtime. The device status signaling allows for proactive management of the surge protection system.

Applications and benefits

This arrester is used wherever high surge protection efficiency is required, e.g.:

• Industrial installations: protection of machines and production equipment against damage caused by disturbances in the power supply network.
• Public buildings: protection of lighting, alarm and fire protection systems.
• Data centers: ensuring uninterrupted operation of servers and IT infrastructure.
• Residential buildings: protection of household electronic devices against atmospheric or grid overvoltages.

By choosing this surge arrester, you are investing in the reliability and safety of your electrical installation, minimizing the risk of costly failures and downtime.