337 / | HD | ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES |
298 | DF | THERMALLY ACTUATED SWITCHES {7} |
333 | DF | .~ With bimetallic element {9} |
360 | DF | .~.~ With operating range calibration or adjustment means {1} |
361 | .~.~.~ Utilizing cam or roller |