Surge limiter module T1, T2 (B, C) - spark gap MOD. GSM T12 275/25 G (3+1) 002440613

Protection of electrical installations against overvoltage – Eti-Polam exchangeable module

This exchangeable surge limiter module, designated MOD. GSM T12 275/25 G (3+1), is a key element ensuring electrical safety in buildings and installations. Designed to work with TT and TN networks, it effectively protects against the effects of voltage surges that can damage sensitive electronic devices. Its compact size – only 1 module – makes it easy to install in distribution boards.

This limiter combines the functions of type T1 and T2 limiters, offering comprehensive protection. Characteristic C allows it to react more slowly to short current surges, making it well-suited for starting devices with motors. A protection level of 1.55 kV provides effective protection against atmospheric and switching surges. A surge current of 25 kA guarantees resistance to intense voltage surges, and a specific energy of 2500 kJ/Ohm indicates the ability to absorb a large amount of energy.

Application and installation

The module is designed for mounting on a base in an electrical distribution board. Optical indication of operation facilitates quick identification of a situation where the limiter has reacted to an overvoltage. Four poles allow protection of single-phase or three-phase circuits. The device's construction ensures compatibility with popular TN-S and TT network systems, making it a universal solution for various installations. The lack of a built-in backup fuse means that appropriate fuses must be used upstream in the circuit.

• Versatility: Designed for TT and TN networks (including TN-S).
• High efficiency: Protection level of 1.55 kV and surge current of 25 kA provide solid protection against overvoltage.
• Simple installation: Compact size (1 module) facilitates installation in the distribution board.
• Visual control: Optical indication of operation informs about the need to replace or check the device's condition.
• Energy absorption: Specific energy of 2500 kJ/Ohm allows absorption of large surges without damage.