15LR380SU

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PTC (Positive Temperature Coefficient) Resettable Fuses are over current protection devices that have been widely adopted in consumer electronics and electrical components due to their ability to detect and limit over current conditions in a circuit without \'blowing\' like a traditional fuse would. The 15LR380SU is one such device.

In normal operating conditions, the 15LR380SU presents a very low resistance, meaning that it has essentially zero impact on a circuit. When an over current occurs in a circuit, the 15LR380SU will rapidly increase its resistance, limiting the amount of current running through the circuit until the excess is removed and the fuse reset. With a high current rating of 380A and a high voltage rating of 32VDC, the 15LR380SU is especially suited for applications where large currents/voltages are present, such as renewable energy/voltaic systems, electric vehicles, consumer electronics, and more.

The working principle of the 15LR380SU is relatively simple. It is a two-terminal device consisting of a temperature sensitive film sandwiched between two conductive electrodes. When a certain amount of current passes through the device, the temperature of the film will rise until it reaches its melting point, at which point the resistance across the device increases dramatically, thereby limiting the amount of current passing through it. Once the over current is removed, the device will cool down and reset, allowing the circuit to operate as normal.

The 15LR380SU has numerous advantages over traditional fuse designs. For one, it does not have an indicator to show when a fault has occurred, so it does not require any additional circuitry for an external indication. In addition, it is highly reliable and capable of withstanding repeated over current events without suffering from deterioration, meaning it has a lifetime far exceeding that of standard fuse designs. Last but not least, it is very affordable and easy to integrate into existing circuits, making it an ideal choice for many applications.

In conclusion, the 15LR380SU PTC Resettable Fuse is an ideal choice for applications where high currents and voltages are present, as it is capable of limiting current in such conditions without needing an external indicator or suffering from deterioration. It is also relatively inexpensive, making it an ideal choice for applications where cost is a major constraint.

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