Surge arrester T1, T2 (B, C) - leakage current free ETITEC SM T12 300/12,5 4+0 002440546

Electrical installation protection with ETITEC SM T12

The ETITEC SM T12 300/12.5 4+0 surge protector is a key element in protecting the electrical installation from the effects of lightning strikes and overvoltages in the network. The Class 1+2 (B+C) device effectively protects against both direct and indirect lightning strikes, as well as overvoltages generated by devices inside the building. Mounting on a TH-35 mm DIN rail makes integration with an existing distribution board simple and intuitive.

Functionality and technical parameters

This four-pole surge protector with a protection level of 1.5 kV, designed to operate in TN-S networks, is characterized by high efficiency. An impulse current of 12.5 kA provides protection even with strong voltage pulses. The specific energy of 39 kJ/Ohm allows for the absorption of a significant amount of surge energy. The surge protector has optical indication of varistor damage – green indicates functionality, red indicates the need for replacement. The maximum wire cross-section of 35 mm² (solid/stranded) and 25 mm² (flexible) ensures compatibility with various types of installations.

Application and benefits

The ETITEC SM T12 surge protector is used in residential, commercial and industrial buildings where protection against overvoltages is particularly important. Using this device minimizes the risk of damage to sensitive electronic devices such as televisions, computers and alarm systems. Thanks to the protection class Type 1+2, the surge protector provides comprehensive protection at the first stage of electrical installation protection. The device's construction with a varistor and spark gap ensures a quick and effective response to overvoltages.