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Question:

How to choose the contactor

How to choose the contactor

Answer:

that is, do not have to start the current to select the contactor, it is too loss.
contactor design has been considered to withstand the impact of starting current, so the choice of contactor do not have to consider the impact of starting the current
rated current multiplier refers to the motor starting current and rated current ratio, the general motor starting current is 5-7 times the rated current (RMS), converted to the peak, then the maximum to 12 times
for example, the circuit current is 218A, the 250A contactor should be selected

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