Question

Wha is the function of shading coil in ac contactor

Answer 1

Answer:

I think this is your answer

Explanation:

Frager spire or shading coil's purpose is to provide sizeable phase-shifted magnetic field (in blue) to keep the contactor on when the main coil flux (in red) passes through zero, avoiding unwanted chatter and mechanical destruction of the magnet and power contacts.

Hope it helps!!