337 / | HD | ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES |
2 | WITH SEPARATE DISTINCT DIVERSE ART-TYPE SWITCHING DEVICE (E.G., FLUID- OR MECHANICAL-ACTUATED) {2} | |
3 | DF | .~> Bimetallic device with other |
4 | DF | .~> Fusible element device with other {4} |