SL18 47003

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Inrush current limiters (ICL) are devices used to limit the inrush current typically seen when capacitors, contactors, and relays are engaged in a circuit. This type of overcurrent can cause issues with fuses, breakers, and other circuit protection devices, not to mention the potential damage to the connected components. ICLs are a type of current-limiting device specifically designed to limit the inrush current to a safe and manageable level. SL18 47003 is a popular ICL used in a variety of applications across industries.

The SL18 47003 is a 18mm bi-polar ICL rated for 24VDC, 47 amps of current and a maximum 3 ohm resistance. This ICL is commonly used to limit inrush current in automotive, heavy-duty off-road, marine, aerospace and rail applications. The SL18 47003 is designed to protect relays, contactors and capacitors from drawing excessive current and damaging other delicate components connected to the circuit.

The working principle of SL18 47003 is simple - a bi-polar current limiting resistor is placed in parallel to the component or load. The resistor is initially very low in resistance and then thermally expands to its full rated value after a few dozen milliseconds in order to limit the current. This allows the circuit to ramp up to its full current rating without causing overloads or damaging components.

SL18 47003 and other ICLs from Eaton are tested and certified to meet the relevant automotive and off-highway standards around the world, including UL, CSA, IEC, VDE, and RoHS. The solid construction of SL18 47003 makes it highly reliable and durable, capable of withstanding extreme temperatures, radiation, shock and vibration. It also offers superior protection against surge, EMI, and RFI for sensitive components. The SL18 47003 is also backed by Eaton’s Lifetime Product Warranty, ensuring a trouble-free service life.

SL18 47003 is an ideal choice for current-limiting applications in automotive, heavy-duty off-road, marine, aerospace and rail applications. By limiting inrush current, SL18 47003 helps ensure circuit protection, enhances component life, and protects sensitive components from damage.

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