SL05 30001-A

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Inrush Current Limiters (ICL)

Inrush Current Limiters (ICL) are an important component of power supply systems and circuits. They provide protection against inrush current, a term used to describe the current that surges through a device when it is first turned on. Inrush current protection is an important safety feature, as high levels of inrush current can damage components and even cause fires. There are many different types of inrush current limiters available on the market, and one of the most popular is the SL05 30001-A.

The SL05 30001-A is a Type N thermistor inrush current limiter designed for a wide range of applications including lighting, HVAC systems, electronics, and many more. The device features a wide operating temperature range of -40 to +125°C, a high current rating of 300A and an extremely low resistance of 0.4mΩ. It is also UL 94 V-0 compliant, making it a safe and reliable component to use in any circuit.

The working principle behind the SL05 30001-A is to limit the inrush current by causing a large initial electrical resistance in the circuit when power is first applied. This resistance is caused by the thermistor, which is a type of resistor whose resistance changes with changes in temperatures. When power is first applied, the thermistor heats up quickly, creating a high amount of resistance and limiting the amount of current that can flow through the circuit. As the temperature returns to its normal level (normally 5-10 seconds after power is applied), the thermistor\'s resistance decreases, allowing the full amount of current to flow.

In addition to providing inrush current protection, the SL05 30001-A has been designed to meet the EMC requirements of IEC/EN 61000-6-2 and IEC/EN 61000-6-3 for both mains interference immunity and emission. This makes it an ideal choice for applications that require high levels of EMC compliance.

In summary, the SL05 30001-A is a reliable and safe type N thermistor inrush current limiter designed to provide protection against inrush current. It has a wide operating temperature range, a high current rating of 300A and an extremely low resistance of 0.4mΩ. It is also UL 94 V-0 compliant and meets the EMC requirements of IEC/EN 61000-6-2 and IEC/EN 61000-6-3. The device achieves its inrush current protection by relying on the thermistor, which causes a large initial electrical resistance when power is first applied and helps limit the amount of current that can flow through the circuit.

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