| 337 / | HD | ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES |
| 14 | DF | ELECTROTHERMALLY ACTUATED SWITCHES {9} |
| 142 | DF | .~ Fusible element actuated {15} |
| 227 | DF | .~.~ Fuse link carrier or holder {2} |
| 228 | DF | .~.~.~ Cartridge or tube {9} |
| 249 | DF | .~.~.~.~ With gas expulsion means {1} |
| 250 | ![]() | .~.~.~.~.~ Venting, cooling or deionizing |