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Relay

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KMoffett

Well-Known Member
C is the "common" contact. It switches between the NO and the NC contacts.
NO is "normally open". The connection between it and C is OPEN then the relay coil is NOT powered.
NC is "normally closed". The connection between it and C is CLOSED then the relay coil is NOT powered.
When the relay is powered C disconnects from NC and connects to NO.

Hope this helps.

Ken
 
Last edited:

KMoffett

Well-Known Member
Those are the terminals at each end of the relay's coil. It appears that you are not familiar with electromechanical relays. This might help:
Relays

Ken
 
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