VCAS080518C400RP Circuit Protection

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VCAS080518C400RP

VCAS080518C400RP is a type of varistor with a standard size of 8mm x 5mm x 1.8mm. It is a metal oxide varistor (MOV) which is specifically designed to work with high voltage sine wave AC applications. It is an advanced cellular or radial MOV, which allows for higher pulse power of 400 joules and can withstand overvoltage up to 500V.

Application Field of VCAS080518C400R

The application of VCAS080518C400R mainly includes motor protection, camera protection, power supply for video game console, power supply for LCD / LED displays, UPS Protection and AC / DC Load Switching. Ultimately, it serves as a very effective, reliable shock absorbing mechanism for incoming high surge voltages and currents.

Working Principle of VCAS080518C400R

The functionality of this varistor is based on its semi-conductor properties. It utilizes the PN junction that is produced when two different materials, such as zinc oxide, are brought in contact. When the incoming surge voltage increases the potential difference between the two materials, it creates an electric field. This electric field distributes the charge from the zinc oxide layer to the external circuit. As the voltage increases, the resistance of the semiconductor in the junction will decrease. As such, the resistance is decreased to a great extent, and it helps in dissipating the voltage within the circuit instead of reaching the component.

The working of this varistor can also be explained using a voltage curve related to its energy absorbing capacity. When the varistor is exposed to an incoming surge voltage, it will produce an electrical potential. This potential is proportional to the resistance of the varistor as well as the current flowing through it. The varistor has the capability of absorbing the energy of the electric field and dissipating it back into the circuit. This enables the varistor to protect components from voltage and current spikes.

Generally, the working of VCAS080518C400R is quite simple: it works as an energy absorbing mechanism which is more effective in dissipating a surge voltage and current. It can be used in a variety of applications, such as motor protection, camera protection, LCD / LED display protection, UPS protection and AC / DC Load switching.

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