BS 561:1951 PDF

2-element, 3-position relays for railway signalling circuits up to 250 volts. Mounting, mechanical clearances, bearings, coils, contact capacity, contact pressure, contact resistance, flexible connections, terminals and terminal markings, insulation tests, pick-up and drop away values, labelling and marking, finish, pointer scale.

Cross References:
BS 442

File Size :	1 file , 360 KB
ISBN(s) :	0580006670
Note :	This product is unavailable in Ukraine, Russia, Belarus
Number of Pages :	12
Product Code(s) :	21162, 21162, 00021162
Published :	06/15/1951