A Series Block Contactor

- Jul 07, 2018 -

A series block contactor is operated by the control circuit energizing a coil, which can be controlled by any sort of switching device to perform an assortment of tasks. When the coil is egerzied, the circuit that the contactor is switching will be enerzied.

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In the above example, there are two stop buttons in the supply to the coil. In the event that one of the stop buttons is stuck, the circuit to the coil will become broken, de-energizing the coil, the supply that the contacts is switching will therefore be switched off.