MF-RX110-2

PTC Resettable Fuses are a type of resettable circuit protection device. MF-RX110-2 is a two-pole PTC resettable fuse, which is designed for current and/or overvoltage protection in markets. MF-RX110-2 provides superior protection during overload and short circuit conditions with an ability to be cycled on and off as many times as needed.

The application field of the MF-RX110-2 covers general purpose current-time trip circuit protection, including automotive, appliance, motor protection, communications equipment, medical systems, industrial equipment, power supplies and uninterrupted power sources.

In order to understand the working principle of the MF-RX110-2, it is first necessary to understand the basic mechanism of PTC Resettable Fuses. PTC fuses contain two layers of ceramic material with metallic particles joined in the middle. When the current goes over the rated value of the fuse, the metallic particles heat up due to Joule heating, thus significantly increasing the internal resistance and reducing the current flow. The lower the current with this increased resistance, the cooler the material and the resistance decreases. This is known as the PTC effect. This mechanism allows the fuse to be cycled on and off automatically.

The MF-RX110-2 has a low resistance when carrying normal operation current, which varies by manufacturer. When the current exceeds the rating of the fuse, the resistance increases significantly to reduce the current, thus allowing safe operation of the circuit. This fuse is designed to continue trip action when the current exceeds rated value for a definite time. This time-delay feature is typical for PTC Resettable Fuses and allows the fuse to avoid nuisance tripping for temporary currents.

The MF-RX110-2 is UL Recognized, RoHS compliant, and comes with a 5-year warranty. It is available in multiple package options, including DIN, 3-pin, and 4-pin SMD packages. The fuse is rated for both 125V and 250V. It is designed with temperature compensation and can adjust the cut-off current with the ambient temperature. This allows the fuse to provide superior protection in various environments.

Overall, the MF-RX110-2 is an advanced PTC Resettable Fuse that provides superior protection during overload and short circuit conditions. It is suitable for wide variety of applications and is UL Recognized and RoHS compliant. The fuse is designed with temperature compensation and can adjust the cut-off current with the ambient temperature.