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What are “Dry Contacts”?

Dave from Electrical Engineering has a short and sweet answer:

http://en.allexperts.com/q/Electrical-Engineering-1356/Meanings-Dry-Contact.htm”>Dave from Electrical Engineering:

A dry contact is a set of 2 switch contacts, like a set of contacts from a relay or from a toggle switch, etc, that has both terminals available and neither contact is connected to power or anything else. (“Dry” = no “juice”) The contacts may be NO, normally open (also called form A), or NC, normally closed (also called form B). Form C would be a SPDT (single pole double throw) with 3 connections.

So, you can hook up the contacts to anything you want, not worrying if they are already connected to power or any other circuit.

Hope this helps!

Dave

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What are “Dry Contacts”?

Dave from Electrical Engineering has a short and sweet answer:

http://en.allexperts.com/q/Electrical-Engineering-1356/Meanings-Dry-Contact.htm”>Dave from Electrical Engineering:

A dry contact is a set of 2 switch contacts, like a set of contacts from a relay or from a toggle switch, etc, that has both terminals available and neither contact is connected to power or anything else. (“Dry” = no “juice”) The contacts may be NO, normally open (also called form A), or NC, normally closed (also called form B). Form C would be a SPDT (single pole double throw) with 3 connections.

So, you can hook up the contacts to anything you want, not worrying if they are already connected to power or any other circuit.

Hope this helps!

Dave

Leave a Comment