Both have a normally closed status contact that can be wired to a SIL-rated controller to perform an automated "proof test.
What does NC stand for?
NC stands for Normally Closed (switch or valve)
This definition appears very frequently and is found in the following Acronym Finder categories:
- Science, medicine, engineering, etc.
See other definitions of NC
We have 130 other meanings of NC in our Acronym Attic
- Nonlinear Capacitance
- Nonrecurring Costs
- Nordic Cooperation
- Nordic Council
- Nordrassil Ceptilus (gaming guild)
- Normal Cleanup
- Normal Concrete
- Normal Condition (electrical)
- Normal Control
Samples in periodicals archive:
Mounted using a clip-in fixed mounting, the switch is available with either two normally open and two normally closed contacts with an optional auxiliary set of contacts, or four normally open or normally closed contacts with optional auxiliaries.
With more than 200 buildings, walks, talks and tours to choose from, Heritage Open Days offers people in the region the chance to explore some of the fascinating buildings and places that have shaped the North East - many of which are normally closed to the public or would charge for admission.
Almost 3,600 places are opening for free during open days from September 11 to 14, including many which are normally closed to the public.
The run will involve a drive over the barrage, which is normally closed to traffic, before members finish for a static car show outside Wales Millennium Centre at 12.
The tycoon, a keen sailor, agreed to arrange for Adrian to use the normally closed route there.
Timers are available in either normally closed (NC) or normally open (NO) models.