Exam 19: Hand-Off Automatic Controls

The selector switch is controlled by________ the push button sleeve.

If set in the_________ position, the coil is connected directly to the power line and the motor will run continuously.

Selector switches often contain multiple sets of contacts.

Selector push buttons cannot combine the operation of a selector switch and push button in the same unit.

When the switch is set in the hand position, contacts 1 and 2 are closed, and contacts 3 and 4 are________ .

If the HOA switch is set in the off position,___________ current can flow to the coil of the starter.

A hand-off automatic switch may be a stand alone control or incorporated into a start-stop push button station.

A C on an HOA switch indicates that the contacts are closed and the O indicates that they are open.