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Motor Control Level 1 Practice Test

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In a motor starter, the power poles carry the motor current while the other contacts used for the control circuit are called what?
Correct Answer:
auxiliary contacts
Explanation:
In a motor starter, the main job is to switch the motor current, which flows through the main power contacts (the power poles). The additional contacts that are built into the same device and used for the control circuit are called auxiliary contacts. They operate in sync with the coil energization and provide feedback to the control system, enable interlocking, and allow hold-in paths for the starter coil. They’re designed for much smaller control currents than the motor current. Other terms aren’t standard for this function: extra contacts isn’t the usual terminology, magnetic contacts would refer to the coil’s magnetic action rather than a separate control-contact designation, and manual contacts would imply manual operation rather than automatic control signals.

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