V18ZA1P Circuit Protection

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TVS – Varistors, MOVs

TVS stands for Transient Voltage Suppressor. It is a type of component often used for voltage and surge protection. MOVs (Metal Oxide Varistors), and Varistors are the two main types of this component. Both of these devices protect the system from over voltages and surges of various types.

The V18ZA1P is a MOV, a type of TVS device. It is designed for medium and high power over-voltage and surge protection applications. It is rated for up to 600V, and can handle maximum surge of 220A. It has two pins, anode and cathode. When there is voltage applied to it, the MOV will act as a resistance, allowing current to flow only up to its voltage rating.

Application Field

The V18ZA1P is typically used in industrial and commercial applications such as telecom, railway, electric appliance and automation. The device offers superior protection against over-voltage and surge, thus providing a reliable long-term connection. It is used in electrical and electronic components such as displays, motors, control systems and various other components. It is also suitable for applications in residential and commercial buildings.

Working Principle

MOVs work on the principle of voltage dependent resistance. When a voltage is applied, the MOV uses the electrostatic field created by the voltage to act as a resistance. The resistance of the MOV depends on the voltage applied. The resistance of the MOV decreases as the voltage applied to it increases, and increases as the voltage decreases. As a result, the MOV will only allow current up to its maximum rated voltage.

When a surge or overvoltage is applied to the MOV, the electrode with the least resistance will be saturated first. This will cause the resistance of the device to drastically increase, limiting the flow of current and protecting the components behind it from the surge. MOVs also have an internal thermal fuse that will break the connection within the device, protecting further if the limit is exceeded.

MOVs are particularly useful in electrical systems since they provide superior protection from over voltages and surges. They are used in a wide range of applications, and are available in different voltage and surge ratings. The V18ZA1P is an example of a MOV, and is rated for up to 600V, and can handle maximum surge of 220A.

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