Notes Flashcards by Zackarie Stephenson | Brainscape

Q

“a”

A

Normally open

Closed when main device is in energized or operated position.

Open when opposite

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Q

“b”

A

Normally closed

Closed when main device is de-energized or non operated position

Open is opposite

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Q

“aa”

A

Normally open

Closed when operating mechanism of main device is in energized or operated position

Open is opposite

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Q

“bb”

A

Normally closed

Close when operating mechanism of main device is de-energized or in no operated position

Open is opposite

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