Normally Open (NO) | Normally Closed (NC)

Normally Open (NO):

It is a short term of Normally Open, which means normally it will be in open condition or open circuit when there no action. During some action like manual holding (ex: push button), contactor holding (contactor energize) and relaying action (mechanism activated) the NO goes to continuous conduction mode where the all associated circuit will be energized. If above said action stopped means, then it will go to Normally open condition (original position). Vice versa.


Normally Closed (NC):

It is a reverse terms of NO. It is a short term of Normally closed, which means normally it will be in closed condition or closed circuit when there no action. During some action like manual holding (ex: push button), contactor holding (contactor energize) and relaying action (mechanism activated) the NC goes to open circuit mode where the all associated circuit will be de-energized. If above said action stopped means, then it will come to Normally closed condition (original position). Vice versa.


 

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