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An isolating switch's primary function is to provide electrical isolation for safety during maintenance, repairs, or emergencies by physically disconnecting a circuit from its power source, creating a visible and certain break in the circuit. It ensures the circuit is de-energized, preventing electr

A relay is an electronic component that uses electromagnetic principles or other physical effects to achieve the "automatic on/off" of circuits. Its core function is to control the on-off of large current/high voltage circuits with small current/signals, while also achieving electrical isolation bet

01 Working Principle of Drop-Out FusesThe core working principle of drop-out fuses is to utilize overcurrent to heat up and melt the fuse element, thereby breaking the circuit and protecting electrical equipment from damage.When an overload or short circuit occurs in the circuit, the fault current c