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Relay contact form

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Thread Starter

Mustwin351

Joined Apr 11, 2013
12
Anyone happen to know if a minature relay with a form A contact rating can be replaced with a form C version.

My understanding is form A is a SPST-NO

Whereas form C is a SPDT, where the common pin is normally connected to one of the contacts (de-energized), and then flips over to the other contact upon energizing the coil.
 
wmodavis

wmodavis

Joined Oct 23, 2010
739
Mustwin351 said:
Anyone happen to know if a minature relay with a form A contact rating can be replaced with a form C version. Yes it can be.

My understanding is form A is a SPST-NO That is correct.

Whereas form C is a SPDT, where the common pin is normally connected to one of the contacts (de-energized), and then flips over to the other contact upon energizing the coil.
Click to expand...
That is also correct.
 
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