337 / | HD | ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES |
14 | DF | ELECTROTHERMALLY ACTUATED SWITCHES {9} |
142 | DF | .~ Fusible element actuated {15} |
283 | DF | .~.~ Plural independent fuses {1} |
284 | DF | .~.~.~ Selectively or sequentially inserted in same protected circuit {2} |
285 | .~.~.~.~ Automatic selective means (e.g., repeater type) {2} | |
286 | DF | .~.~.~.~.~> With delayed action selective means {1} |
288 | DF | .~.~.~.~.~> Transfer or interlock means |