Surge arrester T1, T2 (B, C) - spark gap ETITEC GSM T12 275/25 2+0 RC 002440605

Overvoltage protection in electrical installations

ETITEC GSM T12 275/25 2+0 RC surge arrester is a reliable element protecting electrical installations from the effects of current surges and overvoltages. Designed to work with TN, TN-S networks, it provides comprehensive protection for both sensitive devices and the entire installation. Its design based on spark-gap technology guarantees a quick response and effective voltage limitation to a safe level of 1.55 kV.

Construction and application

This arrester is classified as Type 1+2, which means it effectively protects against both direct and indirect lightning strikes. Mounting is done on a standard DIN TH-35 mm rail, which facilitates integration with existing electrical infrastructure. Thanks to its compact size (2 modules) it does not take up much space in the switchgear cabinet. It is intended for use in installations with a rated voltage of 230 V and a maximum conductor cross-section of 35 mm². Optical indication of the device status informs about the need for replacement after operation. An additional signaling contact allows for remote monitoring of the arrester status.

Key features and benefits

• High efficiency: Surge current 25 kA and specific energy 156.2 kJ/Ohm provide effective protection against strong overvoltages.
• Versatility: Compatible with TN and TN-S network systems, which increases the range of applications.
• Fast response: Spark-gap technology guarantees almost instantaneous voltage limitation.
• Convenient installation: Standard mounting on DIN TH-35 mm rail facilitates installation and replacement.
• Feedback: Optical status indication and signaling contact allow for continuous monitoring of the device status and quick reaction in case of failure.
• Follow current extinguishing capacity: 50 kA – ensures safety after the overvoltage has been eliminated.
• Compact dimensions: Occupies only 2 modules in the switchgear cabinet, saving valuable space.
• Safety: Rated voltage AC 275 V ensures safe operation in standard electrical installations.