CL-70B

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Inrush current limiters (ICL) are devices which control the rate of increase of current in an electric circuit, particularly in AC systems. One common example is the use of a CL-70B ICL. This device is well-suited to limit inrush currents in lighting applications.

A CL-70B works by reducing the level of available current to the load by creating a difference between the available source and load voltage. This means that larger motors can be started more slowly by controlling the level of voltage delivered to them, thus avoiding potentially damaging surge events.

The CL-70B is designed to deliver a maximum of 70A current to the load. The typical limiting characteristic of the CL-70B is that, during the first three seconds of operation, the maximum current is limited to 70A. After three seconds, the current is allowed to rise to its full rating. This makes the CL-70B suitable for applications where there is a need to limit the initial current interruptions.

The CL-70B also features a temperature compensating factor. This means that as the temperature of the CL-70B increases, its current limit decreases. This means that at higher temperatures, the CL-70B will provide increased protection against damaging currents. The CL-70B has an integral thermal trip circuit which cuts off the power supply to the load in the event of an over-temperature condition.

The CL-70B works by controlling the ratio of voltage to current, by adding or subtracting an internal resistance. The CL-70B has an adjustable internal resistance which can be set to restrict the current to a predetermined level. This is typically set according to the specific application requirements. The CL-70B also features a reset switch, which automatically returns the resistance to the default setting if the current rises too high.

The CL-70B is a compact and lightweight device that is easy to install. It is well-suited for applications where space is limited, and it is designed to operate at temperatures of up to 75°C. This makes the CL-70B suitable for use in a wide range of industries, such as aerospace, automotive, and industrial.

In summary, the CL-70B ICL is a reliable device which can be used to reduce the level of available current to the load and to control the rate of increase in current. The adjustable internal resistance allows the current to be limited to a predetermined level, while the temperature compensating factor makes the CL-70B suitable for use in a wide range of applications.

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