ROV10-331K-S

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Transient Voltage Suppressors (TVS) are devices that protect circuit components from the harmful effects of transient voltages. Varistors and MOVs are two common types of TVS devices. Varistors are able to protect low-voltage, single-phase AC circuits, while MOVs are designed to protect three-phase AC circuits up to high-voltage ranges. One example of a TVS device is the ROV10-331K-S.

Application Field

The ROV10-331K-S is a Long Life AC Varistor designed specifically for protection of AC power lines. It is suitable for high-electrical-noise applications and offers a wide operating range from 85V to 265V. This makes the ROV10-331K-S ideal for protection of AC power lines in both residential and industrial applications. It is also suitable for applications where long-term reliability is essential, such as power supplies, medical equipment, and communications systems.

Working Principle

The ROV10-331K-S varistor offers a working voltage range of 85V–265V AC. When a transient voltage greater than the rated voltage of the device is applied, its breaker structure, consisting of two electrodes and an insulator, will temporarily absorb the excess voltage. The longer the time duration of the overload, the more energy the device can consume. It will then slowly release this energy over a longer time duration until the applied voltage returns to the rated voltage range.

The construction of the ROV10-331K-S consists of two electrodes and an insulator. The two electrodes, which act as a varistor film, are filled with a material called zinc oxide. This material has a specific resistance, depending on the voltage applied. When a transient voltage greater than the rated voltage is applied, the resistance of the zinc oxide changes, causing the varistor film to break down and absorb the excess voltage. The device will slowly release this energy over a longer time duration until the applied voltage returns to the rated voltage range.

The ROV10-331K-S is also designed to offer protection from Electrostatic Discharge (ESD) and overvoltages. ESD protection is achieved by the method of grounding the metal case of the varistor. This helps to dissipate any static charge that may be present, thus protecting against ESD. Overvoltage protection is achieved by the adjustable trip points of the device. The adjustable trip points ensure that the breaker structure is able to easily trip at a predetermined voltage to protect against overvoltage events.

The ROV10-331K-S is an effective and reliable transient voltage suppressor that is designed for the protection of AC power lines from transient voltages and overvoltages. This versatile device offers a wide operating range from 85V to 265V and long-term reliability for high-electrical-noise applications. The device also offers ESD and overvoltage protection, making it an ideal choice for AC power line protection in both residential and industrial applications.

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