(under subclass 91) Subject matter including a set of contacts in which the moving contact touches two stationary contacts substantially simultaneously during operation of the circuit breaker.
SEE OR SEARCH CLASS
200, Electricity: Circuit Makers and Breakers,
16, and 243 for bridging contact features.
335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets, appropriate subclasses for feature of electrical switch contact.
337, Electricity: Electrothermally or Thermally Actuated Switches, appropriate subclasses for feature of electrical switch contact.