170M5148

170M5148 Application Field and Working Principle

The 170M5148 is specialised fuse designed to safely protect electrical systems from transient overcurrents. This type of fuse is intended to be used in vulnerable applications such as those found in commercial and industrial power supplies, machinery, and other such apparatus. The 170M5148 has been made in accordance with UL standard 248-14.

Application Field

The 170M5148 is a small, cylindrical type fuse with screw terminals designed to fit within a standard cut-out in an electrical panel. This type of fuse is often used in low voltage electrical systems, such as those found in industrial and commercial premises. It is most suitable for equipment that is continuously running and draws large amounts of current, as well as in applications that require exceptionally fast reaction times for disconnection of the power source. Typical applications for the use of the 170M5148 fuse include power supplies, hazardous machinery, and automotive systems.

Working Principle

A 170M5148 fuse works by providing a very fast response for cutting off the power supply as soon as an an overcurrent is detected. This is accomplished by using an enclosed thermally activated switch in the base of the fuse body. This switch monitors the load current and will disconnect the power as soon as the overload current reaches a certain level.

The thermal element is composed of a very thin strip of thermal sensitive wire that is connected to the fuse element in the centre of the fuse body. This wire is connected to the two screw terminals at either end of the fuse. When the current being drawn by the load exceeds the rated current of the fuse, the thermal wire in the fuse rapidly heats up and expands, triggering the switch at the base to disconnect the power.

If a transient fault occurs, such as a surge or spike, the thermal element in the 170M5148 will act as a safety-net, disconnecting the load from the power before damage can occur. As such, these fuses are perfect for protecting power supplies, machinery, and other vulnerable applications.