TRF250-055UT

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PTC Resettable Fuses are becoming increasingly popular in consumer and industrial applications due to their ability to reset after a current overload or short circuit. As a result, these fuses are often able to perform more effective circuit protection than one-time use fuses, lowering the likelihood of damage to both the device and the application, and eliminating the need to replace fuses after an overload or short. The TRF250-055UT is a resettable fuse with increased capability, allowing the use of higher current ratings and operating temperatures. Thus, this PTC Resettable Fuse is particularly suitable for circuit protection in high-drain applications, as well as in automotive applications.

The TRF250-055UT is a resettable fuse with a resistance-temperature characteristic, designed to trip when a current overload or short circuit is detected. When triggered, the fuse is designed to break the circuit by increasing its internal resistance, which reduces the current and prevents further heating of the power lines. Once the current is reduced, the fuse decreases its internal resistance and allows the current to return to normal, thereby resetting the protection. This resetting ability enables the TRF250-055UT to be used as a safeguard against repeated current overloads or short circuits.

The TRF250-055UT is designed for use in high-drain applications, allowing operation at temperatures up to 125°C and currents up to 55A. This is higher than the rated temperatures for standard resettable fuses, making the TRF250-055UT suitable for automotive and industrial applications which may involve a higher operating temperature. Additionally, the TRF250-055UT features a wide chopper hysteresis, added protection against current surges. This Hysteresis range offers better protection against voltage spikes caused by the chopper controllable supply.

The TRF250-055UT also features improved resetting accuracy. Traditional PTC fuses can be triggered by either a current overload or a short circuit, but the TRF250-055UT offers a higher accuracy of detection – allowing it to discriminate between the two conditions and reset accordingly. This ensures that the fuse will only reset after a current overload and not after a short circuit, thus increasing its reliability for circuit protection.

The TRF250-055UT also features a low resistance rating and a wide current range, meaning it is suitable for high-power applications. Additionally, the TRF250-055UT has a low self-capacitance rating of just 30 to 70 pF, meaning it can react quickly to transient currents and supply the high current ratings needed for such applications. This fast response ensures that the TRF250-055UT can protect the circuit reliably even in the most demanding applications.

Applications of the TRF250-055UT can be found in automotive electronics, power supply systems, industrial control and automation systems, and more. The TRF250-055UT can provide circuit protection not only in high-temperature and high-current applications, but also in sensitive applications such as medical equipment and systems where a low self-capacitance and accurate resetting is of paramount importance. In these applications, the TRF250-055UT offers the user a reliable and cost effective solution for circuit protection.

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