NBN C 63-412-1977
Low voltage industrial equipment. Limits and unique number of markings for special backup switches

Standard No.

NBN C 63-412-1977

Release Date

1977

Published By

BE-NBN

Latest

NBN C 63-412-1977

NBN C 63-412-1977 history

• 1977 NBN C 63-412-1977 Low voltage industrial equipment. Limits and unique number of markings for special backup switches