AS32 5R020

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Inrush Current Limiters (ICL) are passive devices that protect circuit components from the potentially damaging high current that is capable of flowing when components and circuit boards are first energised. The AS32 5R020 is an electrical component in which a NTC thermistor is used as the main element. It acts as a resistor and limits the amount of current entering the circuit to the value for which it was designed.

The operating principle involves the NTC thermistor that is used. When the circuit is powered up, a high in-rush current initially flows. This current will rise to the peak current, commonly known as ‘surge current’, which is many times higher than the normal operating current. The thermistor has a negative temperature coefficient (NTC) which decreases its resistance as temperature increases. This results in the thermistor ‘dropping out’ at a certain temperature. The energy stored in the thermistor is dissipated as heat. This has the effect of limiting the current to the device.

The AS32 5R020 has an operating range of 0 to 130V AC and a working temperature of -40°C to 85°C. These qualities make it well-suited for a variety of applications. It has become a popular choice for European appliances, due to its low cost and high efficiency. Additionally, the AS32 5R020 is often used in motor control circuits to protect engines from damage due to high surge current, as well as in generator sets to reduce the risk of overloading.

The AS32 5R020 is also used to protect hardware devices like air conditioners, pumps, luminaries, refrigerators, and heaters. In these devices, the current limiter helps to prevent overloads, which can cause damaging short circuits and fires. The component ensures that, even when the current rises above the specified set point, the device is able to contain it and protect the rest of the circuit from harm.

In addition, the AS32 5R020 can be used in industrial settings, such as machine tooling, consumer electronics, and measurement instruments, where it limits the in-rush current of the incoming electrical supply.

The AS32 5R020 is a reliable, cost-effective, and efficient current limiter, which makes it a popular choice for a variety of electrical installations. From providing short circuit protection in home appliances to protecting motors and generators from overloads, the AS32 5R020 is a versatile and reliable solution.

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