2026-25-CB

Series:	TRIGARD® 2026
Packaging:	Tube
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Voltage - DC Spark Over (Nom):	250V
Impulse Discharge Current (8/20µs):	20000A (20kA)
Tolerance:	±20%
Number of Poles:	3
Fail Short:	No
Mounting Type:	Through Hole
Package / Case:	Axial Cylinder, 3 Lead (T-Shape)

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Gas Discharge Tube Arresters (GDT) are commonly used in the electric power industry and in high-voltage applications to protect vulnerable equipment from fault damage. Cells, canopies, switchgear, and other electric components are often equipped with GDT stoppers to help prevent damage caused by lightning strikes, voltage surges, and other power events. GDTs serve as a safety shield for sensitive devices, guarding against extreme voltages that can cause considerable injury.In essence, GDT arresters are components that consist of two electrodes, one connected to an insulator and the other connected to an air-filled cavity. When high voltage is supplied to the first electrode, a conducting channel is formed to the other electrode, allowing current to flow through the body of the arrester. The air in the chamber helps to absorb and release energy quickly to keep the voltage from damaging the protected equipment.In the electric power industry, GDT arresters are typically used in overhead transmission lines and in power grids to protect equipment when a fault occurs. GDT discharges can also be used to protect against induced surges caused by normal operations, such as switching operations. Similarly, they are also employed in underground systems where they provide surge protection against lightning or galvanic induced voltage.When installed in a system, GDTs are often equipped with a self-diagnostic feature which aids in detecting any operational issues with the arresters. This feature helps to greatly reduce the chances of equipment damage due to insufficient protection. In addition to self-diagnostics, GDT arresters also feature a variety of protective measures such as spark-over currents and dielectric breakdown protection.GDT arresters are designed to have a long operational life, typically seeing no change in performance or operation for up to 20 years depending on the environment in which they are installed. Not only does this significantly reduce maintenance costs, it also minimizes the number of spare parts that need to be kept in stock.For every application, be it a power grid, transmission line, or underground system, GDT arresters are a reliable solution to power protection. Their self-diagnostic mechanism along with additional protective measures can help to detect and contain voltage events, reducing the chances of immensely costly equipment damage. With their long life and comparatively low maintenance requirements, GDT arresters offer a great way to ensure compliant and resilient power systems.

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