What Is Fast Acting Fuse

Fast acting fuses have straight single wires.

What is fast acting fuse.

How to select a fast acting fuse. 20a through 30a 250 125vac ul recognized. A time delay fuse has the capacity to sustain transient pulse currents which is not the strong suit of a fast acting. The main function of a fuse is to melt the wire inside during overloads and disconnect the electricity flow into that circuit.

Fast acting fuses should be used in motor circuits will blow more frequently. Fast acting fuse makes this thing happen instantly. A slow blow fuse a fast blow fuse and a two blade mini fuse in today s market we find a fuse for every electronic need. Miniature ul csa fuses and fuse holders.

There are various types of fuses. There is some effect from adjacent heat but much reduced from a slow blow. A fast acting fuse is an electrical safety device that protects electrical circuits and sensitive devices. The below image is a fast acting fuse from littelfuse with the following part number of 021706 3hxp.

Take a look at the time delay fuse vs fast acting fuse analysis to know how they actually differ in functions. The unique feature that differentiates it from other types is that it has a quick response time. All types of fuses will blow out but the differences lie in how and what leads to that blowing. It is ok to replace fuses with higher voltage ratings than the.

Key features benefits up to 250v fast acting ceramic 1 4 x 1 1 4. 1 8a through 15a 250vac ul listed and csa certified. It disconnects the circuit path from the power source almost immediately when electrical surges mismatched loads short circuits or device. Klnr klsr series rk1 fast acting fuses were the earliest type of current limiting fuse developed.

In this situation fast acting is required to protect the source circuit from the load. Their single element silver link design enables them to provide fast acting overload and short circuit protection. Examples if a circuit has a current rating of 15 amperes and a voltage rating of 120 volts then the current rating should not exceed 15 amperes and the voltage rating should be at least 120 volts. When used to protect inductive loads such as motors solenoids and transformers klnr klsr series fuses must be greatly oversized.

This is is a generalisation which no doubt does not always hold but it works in most case. Take a look at the time delay fuse vs fast acting fuse analysis to know how they actually differ in functions. All types of fuses will blow out but the differences lie in how and what leads to that blowing. Choose from our selection of fast acting glass tube fuses fast acting ceramic tube fuses ul class cc fast acting midget fuses and more.

In a fast acting fuse the thermal dissipation in the wire acts to melt the wire portion that is carrying it.