RUSBF075-1

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PTC Resettable fuses are devices used to guard against short circuits, overloads, and other electrical occurrences. They are designed to offer safety when electrical systems are operating and breaking the circuit when a potential problem arises. This interrupts the flow of current and safely turns off the device until it is reset. The RUSBF075-1 is one of the many resettable fuses available that offers high-speed protection, high current capacity, and low current hold current.

Application Field

The RUSBF075-1 Resettable Fuse is most commonly used in applications where external devices may cause significant current overage high. These devices are typically employed in a variety of industries including consumer electronics, automotive, military, medical, and aerospace. For example, in consumer electronics, the RUSBF075-1 provides surge protective performance for digital home appliances such as monitor projectors, LCD televisions, and DVD players. In automotive applications, the RUSBF075-1 is used as an on-board fuse for vehicle charging systems. In addition, it is also suitable for other portable electronic products including PCs, and mobile phone chargers.

Working Principle

The RUSBF075-1 Resettable Fuse works by using a non-linear polymer film to detect and limit current. When a fault occurs, the material heats up to a certain temperature and expands, separating the heating strip from the contact surface and shutting off the circuit until it is reset.

The higher the fault current, the more heat is generated, and the faster it will open. This means the fuse can quickly trip during faulty current conditions. The reset function also enables the fuse to restore its original current rating after the fault is cleared. This allows the device to continue its normal operation without any interruption.

The RUSBF075-1 Resettable Fuse is available in 3.6V, 5V, 12V, and 24V versions. It is RoHS compliant and UL recognized. It features a low temperature coefficient, low contact resistance, and 20mΩ maximum internal resistance, making it a reliable and safe option for many applications.

Conclusion

The RUSBF075-1 Resettable Fuse is an ideal choice for many applications requiring protection from fault current. Its high current capacity and low current hold current make it an attractive to many industries. It is also RoHS compliant and UL recognized, making it a safe and reliable option for protecting electrical systems.

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