0268.031V

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Fuses

Fuses are devices used to protect electrical circuits by cutting off the flow of electricity when a fault is detected. They come in various types, sizes, and ratings to meet different applications and requirements. The 0268.031V fuse is a Class RK1 control fuse, rated for a nominal voltage of 125V with a maximum operating voltage of 250V. It has a long-time delay, making it suitable for protecting higher power electrical appliances.

Application Field

The 0268.031V fuse is intended for residential, commercial and industrial applications for the protection of motors, transformers and generators, as well as for the control of circuits with a high inrush current, such as those associated with air conditioning equipment, arcs welders, refrigeration motors, and loading/unloading equipment. It is also suitable for use for protecting capacitive loads and semiconductor equipment and/or circuits.

Working Principle

The 0268.031V fuse is a thermal-magnetic type of fuse. The thermal-magnetic principle of operation works on the basis that when a current flows through the fuse, it will cause the temperature of the fuse link to rise. This temperature rise will cause the fusible element inside the fuse to fuse and break the circuit. The magnetic element of the fuse also works to detect and disrupt any rapid increases in current. This provides added reliability in cases of large inrush currents or actual electrical faults. The fusible element of the 0268.031V fuse is composed of a strip of zinc alloy which melts to interrupt the circuit when sufficient heat is generated in the metal strip from the electric current. The magnetic element is composed of an open iron-nickel core wrapped by an iron-nickel wire coil, which is held within a ferrite core. This helps to detect and disconnect higher transient loads of current which occur before the thermal fusible element has time to respond.

The 0268.031V fuse has a long-time delay, meaning it reacts more slowly to current faults and/or increases than normal. This should be taken into account when sizing the fuse, as too large a fuse will not trip quickly enough in the event of a fault while too small a fuse may not adequately protect the load or circuit.

In summary, the 0268.031V fuse is a thermal-magnetic type of Class RK1 control fuse rated for a nominal voltage of 125V with a maximum operating voltage of 250V. It is intended for residential, commercial, and industrial applications with higher power electrical appliances, such as motors, transformers, and generators, as well as for protection of capacitive loads and semiconductor equipment and/or circuits.

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