What Normally Open and Normally Closed Switches are and how they work?

Normally Open and Normally Closed electrical contacts make up electrical switches, relays, circuit breakers, and most any other electrical component that switches something on and off.

A “normally open” is a contact that does not flow current in its normal state. Energizing it and switching it on will close the contact, causing it to allow current flow.

A “normally closed” is a contact that flows current in its normal state.
Energizing it and switching it on will open the contact, causing it to not allow current flow.

Switches along with hundreds of other products are available at www.MCG-USA.com

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