218 / | HD | HIGH-VOLTAGE SWITCHES WITH ARC PREVENTING OR EXTINGUISHING DEVICES |
1 | DF | ARC PREVENTING OR EXTINGUISHING DEVICES {14} |
89 | DF | .~ Interposed non-conductor {3} |
91 | DF | .~.~ Liquid {14} |
103 | .~.~.~ Arcing chamber {3} | |
104 | DF | .~.~.~.~> Including magnet or coil |
105 | DF | .~.~.~.~> Grid or baffle stack |
106 | DF | .~.~.~.~> With venting means |