ICL321R030-01

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Inrush Current Limiters (ICL) are devices that limit the inrush current at start-up of an electrical system. One of the most popular models in this class is the ICL321R030-01.

The ICL321R030-01 is a three-terminal, Current Limit Inrush Controller (CLIC). This device is designed to limit inrush current during the start-up phase of AC motor-start and lighting applications. The device provides a limiting current that is directly proportional to its input voltage (VIN) and is set by an external resistor (Rext). Its primary applications include single-phase and three-phase motor start applications.

The working principle of the ICL321R030-01 is simple. When an AC voltage is applied to the module, current will flow through it and be limited by the Rext resistor. This limits the maximum current that can be supplied to the motor and thus limiting the inrush current. The current level is dependent on the AC voltage applied, and the resistance of the external resistor.

The ICL321R030-01 offers several benefits which make it a popular choice for motor-start applications, as well as other applications, such as HVAC, automotive, and lighting. It is a low cost, high performance solution that provides excellent transient protection for the motor and other components. It has a wide operating temperature range and requires no external components, except for the external resistor.

The ICL321R030-01 is a versatile, cost-effective device that provides excellent current limiting performance. Its three-terminal construction is designed for easy integration into existing AC motor-start systems, as well as other applications. With its reliable performance and built-in safety measures, this current limiter is an ideal choice for those looking for an power management solution.

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