US PATENT SUBCLASS 337 / 225
.~.~ With overfusing or tamper prevention means

Current as of: June, 1999
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337 /   HD   ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES

14  DF  ELECTROTHERMALLY ACTUATED SWITCHES {9}
142  DF  .~ Fusible element actuated {15}
225.~.~ With overfusing or tamper prevention means {1}
226  DF  .~.~.~> Special adaptor or other selective means

DEFINITION

Classification: 337/225

(under subclass 142) Subject matter including (1) means specifically adapted for limiting the capacity of the fuse which can be used in the device, (2) means for limiting a fuse carrier to use only with a particular fuse element designed for use therewith, (3) means to prevent the unauthorized removal or tampering with a fuse once it has been inserted into a holder or means to prevent the substitution of a metallic nonfusible device in a fuse holder.

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers,

43.01+, for mechanical switches with means for preventing unauthorized use.

361, Electricity: Electrical Systems and Devices,

627+, and 644+ for panel boards with selective means which prevents interchangeability of circuit control devices.