V120ZC4PX2855 Circuit Protection

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The V120ZC4PX2855 is a general-purpose varistor manufactured by PRYDA sold under the name ZChock. This type of varistor is classified as a transient voltage surge suppressor (TVS). It is designed to provide protection against voltage spikes and other transients in electrical systems and is widely used in a variety of electronic equipment, including computers, audio / video systems, and consumer electronics.

A varistor (also known as multilayer suppressor, voltage dependent resistor, or MOV - Metal Oxide Varistor) is an electronic component that has a voltage dependent resistive property. In other words, its resistance changes when the applied voltage changes. This type of device is used to limit the magnitude of voltage transients (surges) when such an event occurs in an electrical system. This helps to protect electronic components from damage caused by overvoltage.

The V120ZC4PX2855 device is a 4-layer, non-polar MOV with a MOV-AHC-0808 marking code and an ambient air temperature rating of -40°C to +85°C. It has a peak clamping voltage of 120V and a surge current rating of 500A. The V120ZC4PX2855 is rated for surge currents up to 800A for applications with high peak transit currents, such as computer power supplies or similar devices with bulky primary protection.

The V120ZC4PX2855 is a 4-layer metal oxide varistor that is activated within a few nanoseconds of an overvoltage event. It has a high protected threshold voltage, and its resistance changes above that value, limiting the rise in voltage to the specified protection level. The maximum clamping voltage is 120 volts, and the device has a surge current rating of 500A. It is designed to provide protection against voltage surges in electric circuits and is widely used in computers, audio video systems, and consumer electronics.

The working principle behind the V120ZC4PX2855 is that it acts as a protection device when the voltage rises above the specified voltage protection threshold. When the excess voltage is encountered, the varistor effectively limits the overvoltage by reducing the voltage across the protected electronic components to a safe level. This is done by changing its resistance in such a way that the peak voltage is prevented from exceeding the set threshold.

The V120ZC4PX2855 is a widely used MOV used to protect against overvoltage transients in a variety of applications. It is cost-effective and can be easily installed in a variety of locations. Its clamping voltage of 120V helps to protect sensitive equipment and electronic systems from damage, making it an ideal protection device for computer systems or other sensitive electronic equipment.

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