ROV20H241K-2

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Varistors and MOVs (metal oxide varistors) are among essential components in power electronics. The classification of these components is based on their construction, parameters, and application. Generally, varistors have high varistor capacitance and low threshold voltage, whereas MOVs have low varistor capacitance and high threshold voltage.

The ROV20H241K-2 is a metal oxide varistor (MOV) manufactured by EPCOS. It is a multilayer ceramic device designed for protecting against overvoltage in high voltage applications. It can be used in either AC or DC applications. This device has a capacitance range between 216pF to 960pF and an operating temperature range between -40°C and 85°C. It also has a surge capability of 8kA.

The working principle of the ROV20H241K-2 can be divided into two parts. Firstly, when the voltage across the varistor is low, the resistance is very high, thus the device acts like an open circuit. Secondly, when the voltage exceeds its let-through voltage (VLT), the resistance decreases rapidly. Thus, the device acts like a low impedance short circuit.

The typical application field of the ROV20H241K-2 includes electronic circuits that need protection against overvoltage. It can be used in high voltage applications such as AC power lines, DC controllers, bus fuse, and even in high-voltage DC supplies. It can also be used to protect electronic equipment from voltage surges caused by lightning, switching of inductive loads, or electrostatic discharge.

In summary, the ROV20H241K-2 is an MOV designed for protecting against overvoltage. It has a capacitance range between 216pF to 960pF and an operating temperature range between -40°C and 85°C. It can be used in AC or DC applications and can be applied in high voltage applications such as AC power lines, DC controllers, bus fuse, and high-voltage DC supplies. The working principle of the ROV20H241K-2 involves a low impedance short circuit when the let-through voltage is exceeded.

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