Air-break switches, air-break disconnectors, air-break switch- disconnectors and fuse-combination units for voltages not exceeding 1000 V AC or 1200 V DC, Part 2:specific requirements for the direct switching of individual motors
- Bureau of Indian Standards ; 1979.
Air-break switches
621.316.542.064.241 B. I. S.
Air-break switches
621.316.542.064.241 B. I. S.