3AB 375

3AB 375 Application Field and Working Principle

3AB 375 industrial fuse is a kind of fuse commonly used in the field of electrical engineering. It is an important part of the protection set in the automobile, and also an important protection component in the power system. It is designed to protect the circuit, equipment and personnel in the factory, commerce and residence from overload, short circuit and shortage.

Application Field:

3AB 375 industrial fuses are mainly applied to the field of motor, general electrical apparatus, instrumentation and control. It is mainly used in many kinds of electric equipment such as switching power supply, converter, inverter, start-stop controller, environmental protection equipment, communication equipment, elevator, automated guided vehicle, lighting equipment, AC/dc converter, motor starter, charging equipment, etc.

Working Principle:

The operation of the 3AB 375 industrial fuse is to pass the current through the fuse while it works, and the current passing through the fuse is kept within the rated current of the corresponding model. If an over-current or short circuit occurs in the internal circuit of the protection set, the heat generated by the current is used to melt the metal wire of the fuse, thus interrupting the flow of current to protect the circuit without damaging the equipment. And the heat dissipated from the fuse should not be greater than the heat dissipation limit of the fuse.

3AB 375 industrial fuse is an fast over-current protective device with a temperature-sensitive conductor. When the load current increases, more heat is generated in the conductor, and when the heat reaches a predetermined temperature, the conductor melts and the circuit is broken, thus protecting the circuit from overload.