337 / | HD | ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES |
14 | DF | ELECTROTHERMALLY ACTUATED SWITCHES {9} |
114 | DF | .~ Expansible or vaporizable fluid-actuated (e.g., mercury vapor) {5} |
115 | ![]() | .~.~ With manual or other mechanical contact actuating means {3} |
116 | DF | .~.~.~> Cyclically or periodically operative |
117 | DF | .~.~.~> Utilizing diaphragm or bellows means |
118 | DF | .~.~.~> With restoring or resetting means |