047102.5MRT1

Fuses

047102.5MRT1 is one type of electronic fuse manufactured by Littelfuse Inc. An electronic fuse works as a circuit protector and also current limiter in an electronics circuit. It looks like a small glass tube, capped on both ends, filled with current sensitive off metal strip material, epoxy plug, and ignites when it detects an abnormal current.

Understanding the application field and working principle of 047102.5MRT1 is important for its correct use in any circuit. Generally, it is often used in aviation, medical, and military products, which require the highest reliability in operation over a wide range of temperatures. The 047102.5MRT1 electronic fuse can protect LED light drivers, power supplies, solar inverters, and motor controllers against extreme temperatures, voltage spikes, and over-current suppliy disruptions.

The working principle of 047102.5MRT1 electronic fuse is based on the thermal point to trip system. This system uses a silver-plated metal strip, sealed in the epoxy plug, and a negative thermal coefficient (NTC) polymeric resistance. When the current passes through the silver-plated metal strip, it generates a temperature which is then regulated by the NTC polymeric resistance. As soon as the temperature reaches the set point, the NTC resistance gets lower abruptly and the fuse trips and melts away the silver strip inside the epoxy plug.

In addition, when the current passes through the 047102.5MRT1, it also needs to consider the temperature, further increased by the warm-up of the current in the fusing element. So it is important to pay attention to the thermal runaway current to ensure the safe operation of the electrical circuit.

047102.5MRT1 electronic fuse is a reliable solution which offers fast time to over-current protection for LED light drivers, power supplies, solar inverters and motor controllers.