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BS 561:1951
Original price was: $109.00.$66.00Current price is: $66.00.
Specification for alternating-current line relays double-element 3-position (for railway signalling)
standard by BSI Group, 06/15/1951
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
Product Details
- Published:
- 06/15/1951
- ISBN(s):
- 0580006670
- Number of Pages:
- 16
- File Size:
- 1 file , 360 KB
- Product Code(s):
- 00021162, 00021162, 00021162
