| 337 / | HD | ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES |
| 14 | DF | ELECTROTHERMALLY ACTUATED SWITCHES {9} |
| 142 | DF | .~ Fusible element actuated {15} |
| 168 | DF | .~.~ Cutout or disconnect type (an assembly) of a fuse support and fuse holder with or without a fuse link) {3} |
| 171 | DF | .~.~.~ With dropout features (i.e., the fuse tube will be separated, or drop away from, at least on the main circuit contacts) {3} |
| 173 | ![]() | .~.~.~.~ Utilizing sliding or reciprocating motions |