VS350SM

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Gas Discharge Tube Arresters (GDT)

Gas Discharge Tube Arresters (GDT) are a type of electrical equipment designed to protect other electrical and electronic components from the effects of variations in electrical transients, surges, and overvoltages. GDTs are used in everything from aircraft to personal computers and are used to protect components from overheating or damage by diverting unwanted transient energy away from sensitive circuits. They are the most widely used form of surge protection in the world.

A Gas Discharge Tube (GDT) is a form of arrester that uses a specific gas-filled enclosure to allow electrical conduction during normal operating conditions but isolate power lines from short duration surges. A GDT operates at the nanosecond level and has an ultra-fast response time. It is used to protect circuits from overvoltage and undershoots.

VS350SM Application Field and Working Principle

The VS350SM is a gas discharge tube arrester specifically designed for Ethernet applications such as Power over Ethernet (PoE) and industrial communications. This arrester offers a unique combination of response time and protective capability, making it ideal for challenging Ethernet applications.

The arrester contains a series of three components: two electrodes, a gas-filled chamber, and a varistor. The electrodes are semi-conducting materials that are coated with epoxy and placed on either side of a gap. When an overvoltage occurs, gas in the chamber is discharged and a dielectric arc is created, establishing conduction between the electrodes, allowing the transient energy to be discharged.

Once the overvoltage condition is removed, current then flows through the varistor, which limits the voltage across the GDT to a safe level. This reduces the energy dissipated by the GDT, enabling the protection time to remain constant and the arrester to protect against more transient events without damage. The varistor also functions as a surge diverter, redirecting the transient energy away from the protected circuit.

The VS350SM is designed with a low-profile design that ensures the arrester mounts close to existing power systems, and is capable of handling 10/100/1000 Ethernet connection and up to 750 Vrms of surge protection. It is also UL listed and tested, offering peace of mind to users.

In conclusion, the VS350SM is an excellent example of a GDT arrester for Ethernet applications. It offers quick response times and excellent surge protection, all in a small, low profile design. It is UL listed and highly reliable, offering maximum protection for applications up to 750 Vrms.

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