Sometimes it happens we have to insert a relay, a switch or multiple
The image above collects all the most used combinations and shows us quickly which device we need to use in our system.
The acronyms obviously have a precise meaning. For example:
- SPST = Single Pole Single Through
- SPDT = Single Pole Double Through
- DP3T = Double Pole Triple Through
- NO = Normally Open
- NC = Normally Closed
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