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Can fuse as asynchronous motor overload protection【addtime:2014-11-18 】

The fuse is no overload protection of asynchronous motor.

In order to not to fuse fusing in motor startup, so choose the rated current of the fuse to 1.5 ~ 2.5 times larger than the motor rated current, so even if the motor load 50%, fuse will not fuse, but not motor burn out to 1 hour. So the fuse only as a short circuit protection of motors, wires, switch equipment, and cannot have overload protection role. Only add thermal relay equipment as the motor overload protection.


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