B88069X0440S102

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Gas Discharge Tube Arresters (GDTs) are electrical devices designed to protect electrical circuits, equipment, and systems from momentary or temporary voltage surges caused by over-voltage formation. The B88069X0440S102 GDT is a surge arrester designed for protection against transient high voltage surges of up to 5 kV. The arrester is designed for application in industrial, automotive, and residential locations.

The B88069X0440S102 GDT is a cylindrically-shaped device that consists of a sealed internal chamber compressed by nitroglycerin which is made up of a metal outer case, a ceramic insulating shell, a zinc oxide (ZnO) element, a current limiting gas filled tube, and a pressure controlling fuse. The ceramic shell is a hollow tube-like structure that houses the zinc oxide element. It also acts as an insulator to contain gas, prevent arcing, and provide an electrical connection to the GDT.

The ZnO element is composed of a finely-ground powder of zinc oxide that is pressed into the ceramic shell to create an avalanche breakdown region. This breakdown region is designed to trip and release excess energy that is generated when high voltage surges occur. This energy is then conducted along the ZnO element and absorbed by the surrounding gas-filled chamber. The pressure controlling fuse is placed between the breakdown region and the gas-filled chamber to prevent too much pressure from building within the chamber.

The B88069X0440S102 GDT can be used in a variety of applications and environments. This includes industrial, automotive, and residential locations. Its usage is highly preferred in areas that have high voltage surges due to the lightning strikes and other voltage fluctuations. In residential applications, the arrester is commonly installed near electronic equipment to protect them from surge-related damage. It can also be used to protect industrial systems such as computers, networks, and communications systems.

The B88069X0440S102 GDT has a simple working principle. When a surge is triggered by an over-voltage form, the voltage entering the arrester will cause the zinc oxide element to be heated up. This in turn causes the ZnO element to break down, which trips the current limiting gas-filled tube. The tube then allows current to flow freely through the arrester until the surge is over, at which point the pressure controlling fuse will reset the tube and the ZnO can cool down before the next surge occurs. This process allows the arrester to absorb the energy generated by the surge, thereby protecting equipment and circuits from potential damage.

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