SL15 5R007

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Inrush Current Limiters (ICL)

Inrush current limiters are an integral part of many electrical applications in order to ensure quality performance. Normally inrush current flow during the start-up of the device, which can lead to premature failure of the equipment. Therefore, an inrush current limiter is used as an efficient technique to regulate the flow of inrush current so as to prolong the life span of the device. One of the most popular inrush current limiting device is SL15 5R007.

Application Field of SL15 5R007

SL15 5R007 is an off-line inrush current limiter which is used in a wide range of applications such as motor control, power supply, over-voltage protection, and induction heating. It is also suitable for controlling inrush current in low-power applications such as in LED lighting, low-voltage electronic equipment and electrical power balancing among multiple power sources. The SL15 5R007 offers a very wide operating range and is highly reliable with excellent performance features. It is also extremely durable and has a negligible failure rate. In addition, it is light-weight, economical and easy to install.

Working Principle of SL15 5R007

The SL15 5R007 uses a two-stage dynamic magnetic field control principle to control inrush currents. The device consists of a class A electronic circuit and a series class B thermistor. The thermistor limits the current level by decreasing its electrical resistance in response to increased temperature. When the equipment is turned on, the class A electronic circuit detects the temperature changes of the thermistor due to the inrush current and passes the necessary signals to the control circuit. The control circuit then adjusts the magnetic field according to the signals received from the electronic circuit and limits the amount of inrush current flow.

To sum up, the SL15 5R007 is an inrush current limiter which has a wide operating range, is highly reliable with excellent performance, and is light weight, economical and easy to install. It uses a two-stage dynamic magnetic field control principle to control inrush currents, and is widely used in applications such as motor control, power supply, over-voltage protection and induction heating.

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