SL10 2R505-A

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Inrush Current Limiters (ICLs) are components in electrical engineering used to limit inrush current, usually when a device is being powered on. Thermal, resistive or inductive inrush current limiters are the three main types.

The SL10 2R505-A Inrush Current Limiter is a NTC Thermistor based inrush current limiter that is designed to limit the amount of inrush current for different power supply and load application across China. It is recommended for applications that require a temperature range of -40 to +85°C.

The SL10 2R505-A Inrush Current Limiter works by utilizing the mission of a PTC thermistor, both the ambient temperature and the peak temperature of the inrush current will affect the resistance of the thermistor. Typically, when power is applied to the inrush current limiter, the resistance is very low, allowing the current to pass through. When the current passing through the inrush current limiter has exceeded a certain peak point, the temperature of the limiter will rise rapidly. This heightens the resistance of the thermistor, limiting further current. The thermistor will cool gradually after the initial peak current has decreased, allowing the resistance to slowly decrease, enabling current to pass through again.

The SL10 2R505-A can be used to limit a maximum of 100A of inrush current within a few milliseconds when connected across the power supply. It is suitable for a voltage of 250VAC and a temperature range of -40°C to +85°C, with a power of 220W.

An SL10 2R505-A inrush current limiter is commonly used in air-conditioners, power supplies, automotive electrical systems, lighting control, and power conversion appliances. In particular, power generators, UPS systems, transformers, electric motors and LED driver. Many times these appliances require a large burst of power when first powered on, and the inrush current limiter prevents too much power from being drawn -- by not allowing current to exceed the set limit, the inrush current limiter ensures that the appliance is not damaged.

The SL10 2R505-A inrush current limiter works on the principle that when an electronic product is connected to the power supply,the current is momentarily excessive. A current limiter allows this excess current to flow, and in doing so, it dissipates a certain amount of power and creates a fixed amount of current. This current is then consumed by the system, which reduces the amount of heat generated during the inrush current, and helps to protect the system.

A major benefit of using an SL10 2R505-A inrush current limiter is that it helps to reduce the stress on the power cables and circuit Breaker, as the inrush current is controlled and the amount of heat produced is minimal. Furthermore, it also helps reduce the possibility of tripping the breaker due to high inrush current loads, thus avoiding costly system re-starts or component replacements. It also helps to maintain consistency in power supplies, reducing the chances of system crashes due to current overloads.

In conclusion, the SL10 2R505-A Inrush Current Limiter is an important component in electrical engineering used to limit inrush current from electrical appliances, preventing a high inrush current from damaging the system. It is commonly used in air-conditioners, power supplies, automotive electrical systems, lighting control, and power conversion appliances. By limiting the initial inrush current, the SL10 2R505-A Inrush Current Limiter helps to reduce the stress on power cables and circuit breakers while ensuring the system is not damaged by a sudden surge of power.

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