B59340U0140B010

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PTC Resettable fuses are one of the most popular types of overcurrent protection elements most frequently used in electronic circuits. Versatile, durable, and affordable, they are built to detect and protect against current overloads and shorts. The B59340U0140B010 PTC Resettable Fuse is a specific type of polyfuse, or polymeric PTC, designed particularly for high inrush current applications and to provide inverse time-delay protection in conjunction with MCBs. It is highly reliable due to its thermally activated design and is most frequently used in medical, industrial, and consumer electronics applications.

Application Field

The B59340U0140B010 PTC Resettable Fuse is ideal for use in high inrush current applications, such as those seen in modern consumer electronics, motors, pumps, and transformer applications. It can also be used as back-up protection for other electronic components, including power supplies, circuit boards, and Uninterruptible Power Supplies (UPS). The fuse is built using self-resetting polymeric PTC material, meaning that when the applied current exceeds the cut-off threshold, the PTC element will automatically trip without further user input.

Working Principle

The working principle of the B59340U0140B010 PTC Resettable Fuse is simple yet effective. When the current applied to the fuse is below or within the rated current, the fuse is non-conductive. But when the current reaches the cut-off or overload threshold, the PTC element will begin to heat up rapidly, increasing in resistance until it completely blocks the circuit, effectively preventing further current from passing through. The device will remain in this state until the applied voltage and current are both lowered below certain levels, allowing the PTC element to cool and reset itself.

The B59340U0140B010 PTC Resettable Fuse is equipped with an easily visible indicator that tells you when the device has been tripped. The red indicator will remain lit up as long as the fuse is tripped, allowing you to easily see when the fuse needs to be reset before attempting to restore power to the circuit.

Conclusion

The B59340U0140B010 PTC Resettable Fuse is a highly reliable and inexpensive overcurrent protection element, designed primarily for use in modern consumer electronics, industrial, and medical applications. Its thermally activated design makes it ideal for high inrush current applications and provides inverse time-delay protection in conjunction with MCBs, while its visibly tripped indicator allows for easy visual identification of a tripped fuse. It is a robust yet easy to use device that is sure to be a reliable asset for any application.

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