2026-25-A1FLF

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Gas Discharge Tube Arresters (GDT) have been increasingly used in the protection of power lines and communication lines in recent years. Due to its many advantages such as high current withstanding capability, high surge current handling ability, wide operating temperature range, good thermal stability, long life and high insulation strength, GDTs can be used to provide reliable protection for any application. The 2026-25-A1FLF series of GDTs is a well known and highly popular GDT. This article will discuss the application field of the 2026-25-A1FLF series and its working principle.

The 2026-25-A1FLF series is a type of GDT that is primarily used for anti-surge protection in medium and low voltage power lines, communication lines and sensitive electronic equipment. This series of GDTs is especially suited for protecting against surges caused by lightning, short circuits and switching operations. Additionally, they can be used to protect power lines from over-voltage, under-voltage and frequency fluctuations, as well as to protect sensitive electronic equipment from voltage gradients.

The working principle of a GDT is based on the fact that when a voltage over a certain threshold is applied to the steel core of the device, a spark gap is formed between the steel core and the electrodes, and the current will be diverted away from the circuits it is trying to protect. This process, called spark gap forming, limits the surge current and thus the surge is prevented from entering the protected electronics or power lines. This process also helps protect the GDT itself as it will eventually fail if the currents it is exposed to become too large.

The 2026-25-A1FLF series of GDTs is designed to have a spark gap forming voltage of 50V which is the lowest of its kind and makes it ideal for medium and low voltage applications where the surge protection voltage is typically below 50V. Additionally, the GDT’s electrical characteristics such up to 4kV high withstand voltage and up to 400A high current withstanding capability makes it suitable for a wide variety of high current applications. The GDT also has superior thermal stability and is rated for a wide operating temperature range from -55°C to 80°C.

The 2026-25-A1FLF series of GDTs is well suited for medium and low voltage power line and communication line protection. It is capable of providing reliable and high-quality surge protection against lightning, short circuits and switching operations. Additionally, its extremely low spark gap forming voltage and high current handling capabilities make it an excellent choice for applications requiring the protection of sensitive electronics or equipment from over-voltage, under-voltage and frequency fluctuations.

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