AS35 5R025

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Inrush current limiters (ICL) are components used to prevent damage caused by the high-current surge when an electric system is powered on. The AS35 5R025 is a component of this type. This article will discuss its applications, as well as its working principle.

Applications

The AS35 5R025 is typically used in automobiles and other vehicles with 12/24v power systems, and in industrial installations to protect switchgear or solar-power converters. In these situations, the ICL effectively reduces the initial peak of current, preventing damage to the circuit or power system. It is also used to protect high-voltage power apparatuses such as transformers and other components.

This specific ICL model can be used in a variety of applications, including the heating, ventilation, and air-conditioning systems in buildings, as well as in portable electrical equipment. It is also used to prevent open-circuit faults in lighting systems. Additionally, the AS35 5R025 can be used in factory automation and temperature control systems, for use in uninterruptible power supply (UPS) systems, and in processes that use AC or DC power supplies.

Working Principle

The AS35 5R025 works by using a two-stage system to reduce the initial inrush current into the circuit. The first stage is a thermistor, which is a semiconductor device comprised of a ceramic material that has a high resistance. This resistor is used to limit the current flowing into the system during the power-up process. The second stage involves the use of a bypass diode which allows the current to flow through it when the thermistor doesn’t provide enough resistance.

When the voltage in the system begins to rise, the thermistor acts as a resistor, absorbing some of the initial surge in current. At this stage, the voltage is comparably low, so the thermistor can dissipate the energy generated by the current, which would otherwise cause damage to the circuit. As the voltage rises, the conductivity of the thermistor decreases, allowing the current to pass through. At the same time, the bypass diode allows the current to pass through to the load, protecting it from the large surge.

Once the steady-state current is reached, the thermistor will return to a low resistance state, and the bypass diode will be activated, allowing the current to flow normally. This two-stage system will protect the load from large surges or open-circuit faults.

In addition to its two-stage protection system, the AS35 5R025 also uses a bypass-control circuit to provide overcurrent protection. This circuit will sense when the current is too high or when the system is in overload, and will activate the bypass diode to reduce the current in the system.

The AS35 5R025 is a reliable and effective inrush current limiter. Its two-stage protection system ensures that the system is protected from the initial surge in current when it is powered on, and its bypass-control circuit allows for overcurrent protection. It is used in a variety of applications, including automobiles, industrial settings, and factory automation systems, to protect circuit components from damage.

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