
Air-break switches including isolated switches, totally enclosed and flame proof types for voltages not exceeding 660 volts.
NORMA vydána dne 3.12.1953
Designation standards: BS 861:1939
Note: NEPLATNÁ
Publication date standards: 3.12.1953
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategorie: Technické normy BS