Surge arrester T1, T2 (B, C) - spark gap ETITEC GSM T12 275/25 1+1 RC 002440603

Surge protection in electrical installations

ETITEC GSM T12 275/25 1+1 RC surge arrester is a device designed to protect electrical installations from the effects of voltage surges, e.g. caused by lightning strikes. It provides effective protection in TT, TN-S and TN systems, making it a universal solution for a wide range of applications. The design based on a spark gap and varistor (class 1+2) guarantees a quick response to overvoltages and limits their level to safe values.

Construction and application

This arrester is used in residential, commercial and industrial buildings. Mounting is done on a DIN TH-35 mm mounting rail, which facilitates its integration with the existing electrical infrastructure. Compact dimensions (2 modules) allow for installation in switchboards with limited space. It has optical indication of operation, which informs about the need for replacement after a surge. Additionally, the presence of a signaling contact enables remote monitoring of the device status and integration with building management systems.

Key features and benefits

• High protection efficiency: Surge current 25 kA and protection level 1.55 kV provide effective protection against damage to electrical and electronic equipment.
• Versatility: Possibility of use in different network systems (TT, TN-S, TN) increases installation flexibility.
• Status indication: Optical indication of operation and signaling contact facilitate diagnostics and maintenance.
• High wire throughput: Maximum flexible wire cross-section of 25 mm² and stranded wire 35 mm² allows connection of wires of different thicknesses.
• Energy absorption: Specific energy at the level of 156.2 kJ/Ohm indicates the ability to absorb a large amount of energy during surges.
• Safety: Follow current extinguishing capacity at the level of 50 kA ensures safe operation in the event of short circuits.
• Solid construction: Made of high-quality materials guarantees durability and reliability of the device.
• L-N and N-PE protection levels: Protection of both the phase and neutral lines as well as the protective conductor increases the safety of the entire system.