DOL starter-single phase in Kenya.
Direct On Line starter. The Direct On Line Motor Starter (DOL) consist a MCCB or Circuit Breaker, Contactor and an overload relay for protection. Electromagnetic contactor which can be opened by the thermal overload relay under fault conditions.
The contactor is controlled by separate start and stop buttons, and an auxiliary contact on the contactor is used, across the start button, as hold in contact. I.e. the contactor is electrically latched closed while the motor is operating.
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