BS 520:1933

Alternating-current track relays (2-element, 2-position).

NORMA vydána dne 1.1.1933

The information about the standard:

Designation standards: BS 520:1933
Note: NEPLATNÁ
Publication date standards: 1.1.1933
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategorie: Technické normy BS