| 337 / | HD | ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES |
| 14 | DF | ELECTROTHERMALLY ACTUATED SWITCHES {9} |
| 36 | DF | .~ With bimetallic elements (i.e., motion takes place in a plane at right angles to its major axis) {10} |
| 37 | DF | .~.~ With manual or other mechanical contact controlling means {12} |
| 52 | DF | .~.~.~ With spring or other energy storage device {4} |
| 53 | DF | .~.~.~.~ Snap-action {4} |
| 56 | ![]() | .~.~.~.~.~ With reclosing or reset means |