| 337 / | HD | ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES |
| 298 | DF | THERMALLY ACTUATED SWITCHES {7} |
| 333 | DF | .~ With bimetallic element {9} |
| 362 | DF | .~.~ Bimetallic element unitary with or directly actuates contacts {5} |
| 363 | ![]() | .~.~.~ Multiple contacts or external circuit control means {1} |
| 364 | DF | .~.~.~.~> Alternately or selectively actuated |