2026-50-C2

Gas Discharge Tube Arresters (GDT) are used to protect electrical systems from the damaging effects of lightning, switching surges, and static discharges. 2026-50-C2 devices are one of the most commonly used GDTs.

The 2026-50-C2 GDT is a two-electrode device composed of an anode and a cathode, with an intervening arc shield. The two electrodes are housed in a thermoset composite case filled with an inert gas, such as argon, krypton, or carbon dioxide. The anode is typically made of molybdenum or gold-plated tungsten, while the cathode is typically made of gold-plated copper or tungsten. The arc shield is typically made of tungsten or stainless steel.

The 2026-50-C2 GDT is designed to withstand large surge voltages without failing and being replaced. When a surge voltage is applied to the anode, the electrons in the anode receive an acceleration in the electric field, causing them to move toward the arc shield, ionizing the surrounding gas. This ionized gas forms a conductive channel, allowing the current to flow through the GDT. As the voltage increases, the highly ionized gas channel conducts more current until the arc reaches its breakover voltage. At this point, the arc breaks down and the GDT is in its arcing state. The arc shield then breaks the arc, rapidly quenching it and isolating the electrodes.

This quenching of the arc is what allows the 2026-50-C2 GDT to absorb the energy of the surge and dissipate it without issue. When the surge is over, the GDT returns to its non-arcing state. This process allows the GDT to protect sensitive electronics from surges without damage.

The 2026-50-C2 GDT is primarily used in telecom systems, providing surge protection for coaxial cable lines. It is also used in industrial applications, such as providing surge protection to AC and DC motor control circuits. In addition, it can be used in power systems, providing protection to sensitive electrical equipment from lightning and switching surges.

In short, the 2026-50-C2 GDT is a reliable and rugged device designed to protect electrical systems from damaging overvoltage surges. Its combination of an anode, a cathode, and an intervening arc shield allows it to quickly dissipate the energy of any surge it encounters, protecting sensitive electronics without damage.