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TVS - Varistors, MOVs, is a device used to protect a circuit or device from electrical overstress. The ROV07-820K-S-2 is a type of high power solid state metal oxide varistor (MOV) which is designed to protect both AC and DC circuits from overvoltage surges. It is a very versatile device which can be used in a variety of applications ranging from telecom, power and medical.

Application Field

The ROV07-820K-S-2 has a variety of applications in telecommunications, power and medical. In the field of telecommunications, it can be used to protect circuit boards from high voltage surges from power supplies, lightning, and other sources. It is also used to guard against EMI and its effects which can degrade data transmissions. In the power industry, it is used to protect against overvoltage and transients in AC and DC power circuits, helping to reduce downtime and failures due to electrical spikes. In the medical field, it is used to protect sensitive electronic equipment from voltage surges, helping to increase patient safety. The ROV07-820K-S-2 is also UL1449 4th Edition recognized.

Working Principle

The ROV07-820K-S-2 is a surge suppression device which protects electronic equipment and components from overvoltage and transients. It consists of a metal oxide varistor (MOV) element and a resistor terminal assembly. The MOV element is a nonlinear device that works by clamping the voltage when a surge or spike occurs. The assembly works by connecting the resistor to the MOV element in order to create a surge current pathway in which the excess energy can be dissipated.

When a surge occurs, the MOV element reacts by clamping the voltage across its terminals to a safe level. This provides protection for circuit boards and sensitive electronic equipment. The resistor, by providing a current path, also helps to dissipate the excess energy, further protecting the system. The ROV07-820K-S-2 has a maximum surge of 30A, a maximum clamping voltage of 820V and a maximum resistance of 3 ohms.

In summary, the ROV07-820K-S-2 is a high power metal oxide varistor designed to protect AC and DC circuits and components from overvoltage and transients. Its assembly works by connecting the MOV element with a resistor in order to create a current path in which the excess energy can be safely dissipated. It has a maximum surge of 30A, a maximum clamping voltage of 820V and a maximum resistance of 3 ohms. It is ideal for use in telecommunications, power and medical applications, and is UL1449 4th Edition recognized.

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