Modular surge arrester ETITEC ML T123 300/12,5 3+1 002440671

Electrical installation protection with ETITEC ML T123

The ETITEC ML T123 300/12.5 3+1 modular surge protector is a reliable device designed to protect electrical installations from the effects of atmospheric and switching surges. Its construction based on varistors and spark gaps (in the N-PE circuit) provides comprehensive protection, meeting the requirements of classes T1, T2 and T3 (I, II, III). Mounting on a TH-35 mm DIN rail facilitates integration with existing switchboards.

Functionality and application

This surge protector effectively protects against overvoltages in TN, TN-S and TT network systems. Use in the main switchboard minimizes the risk of damage to electrical and electronic equipment, ensuring uninterrupted power supply. The device's energy absorption capacity is 39 kJ/Ohm, guaranteeing effective energy dissipation during discharges. Optical signaling of the device's status informs about any varistor damage.

Characteristics and parameters

The device is characterized by an impulse current of 12.5 kA (10/350 µs) and a maximum wire cross-section of up to 35 mm² (single-/multi-strand) and 25 mm² (flexible). The protection level of 1.5 kV provides effective protection against excessive voltage increases. Protection class Type 1+2 indicates versatility in various types of installations. Four poles allow for full circuit protection. Additionally, internal thermal protection protects the surge protector from overheating, and the double grounding terminal increases installation safety.

It has an impulse current of 12.5 kA, and the number of poles is 4. It provides a protection level of 1.5 kV and a specific energy of 39 kJ/Ohm. The maximum wire cross-section is 35 mm² for single- and multi-strand wires and 25 mm² for flexible wires. The device is designed to operate in TN, TN-S and TT network systems and has a degree of protection of IP20.

The ETITEC ML T123 surge protector is a solid solution for professionals and end-users looking for reliable protection of electrical installations against the effects of surges. Its versatility and ease of installation make it an ideal choice for both new installations and modernization of existing systems.