337 / | HD | ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES |
298 | DF | THERMALLY ACTUATED SWITCHES {7} |
306 | DF | .~ Expansible or vaporizable fluid actuated {12} |
312 | DF | .~.~ With manual or other mechanical contact control means {4} |
314 | .~.~.~ Reciprocating or sliding motion {1} | |
315 | DF | .~.~.~.~> Piston or plunger |