B57235S0609M000

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Inrush current limiters (ICL) are vital components used in electrical systems to protect from damage caused by sudden inrush currents. The B57235S0609M000 is an ICL developed by EPCOS, and is used in a wide range of applications. This article explains its application field and working principle.

Application Field

The B57235S0609M000 ICL is used in various household and industrial applications. It is designed for use in voltage measurement systems, and is handy in applications such as medical equipment, security systems, sensors and switches, and consumer electronics. In addition, it is suitable for non-intrusive current measurement, and monitoring of active and reactive power. It is also used in power supplies, such as UPS systems, laser printers and monitors.

Working Principle

The B57235S0609M000 ICL acts as a protection device against inrush current surges by limiting the current that flows into an electrical system. The device is typically connected in series with the AC mains, in a two-point configuration. It consists of a simple thyristor, thermistor, resistor, and capacitor, all of which combine to protect the system from short-term inrush currents and provide long-term power regulation.

The B57235S0609M000 ICL is designed to work within a specific load voltage range. When a potential difference is applied to the ICL, the thermistor and the thyristor (SCR) are put into action. The thermistor and the capacitor act in conjunction to cause a voltage drop in the ICL, which limits the inrush current. Similarly, the SCR senses the voltage and current of the input signal and turns off the device when the voltage and current exceed a certain level.

In summary, the B57235S0609M000 ICL works by monitoring the voltage and current of the incoming AC mains and automatically limiting the current surge that would normally occur if the voltage and current exceeded a certain level. This helps to protect the electrical system from damage and overheating caused by these surges.

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