337 / | HD | ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES |
14 | DF | ELECTROTHERMALLY ACTUATED SWITCHES {9} |
142 | DF | .~ Fusible element actuated {15} |
143 | DF | .~.~ With manual or other mechanical contact control means {8} |
145 | DF | .~.~.~ Multiple contact or plural circuit control means {1} |
146 | .~.~.~.~ Multipole or polyphase |