CL-120B

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Inrush current limiters (ICL) prevent electrical components from overloading during the power on cycle. A CL-120B is one such device in particular that is designed for a specific application and operating principle.

The CL-120B is a two-terminal, time delay inrush current limiter with a maximum inrush current of 120A. It is mainly used in battery management systems, applications such as electric bicycles, electric vehicles, solar inverters, power supplies, and many others. The CL-120B is a thermally operated device that provides an upper current limit during the turn-on cycle. It is designed to delay the start-up of current by limiting the inrush current, which helps to protect downstream components such as fuses and relays.

The working principle of the CL-120B is quite simple. The inrush current through the device is monitored and limited by a built-in thermistor. At turn-on, the current is limited to a safe level. As the device heats up, the resistance of the thermistor decreases, allowing more current to pass through the device. The full current rating can then be reached. The limiting rate can also be adjusted with an external resistor to suit different applications.

The CL-120B has a wide operating temperature range of -40°C to +125°C, making it suitable for a variety of environments. It also features overvoltage protection and surge current protection, as well as a low insertion loss and fast response time. The device is UL and VDE approved, making it suitable for use in safety and medical applications.

The CL-120B is designed to meet the industrial standards set by companies such as Underwriters Laboratories (UL). It is highly reliable and able to provide optimal protection for various applications. Additionally, it is easy to install and use, with a wide variety of mounting options and other features.

In conclusion, the CL-120B is a reliable and versatile inrush current limiter. It provides an effective way to protect electrical components from overloading or damage during the power on cycle. Its features make it ideal for a wide variety of applications, and its UL and VDE approvals mean it is suitable for use in safety-critical applications.

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