Quote:
Originally Posted by Heddy
Can't get my head around 'normally open' and 'normally closed.
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I can't help with the FBH but I can translate that terminology for you. It describes the state of relay contacts when no power is applied to operate the relay. Therefore, 'normally open' contacts will close when the relay coil is energised and 'normally closed' contacts will open when it is energised. Relays often have both types of contact within the same enclosure.
Any help?
Simon