Arc preventing or extinguishing devices > Auxiliary shunt > Polyphase > Patents

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Class Information
Number: 218/9
Name: High-voltage switches with arc preventing or extinguishing devices > Arc preventing or extinguishing devices > Auxiliary shunt > Polyphase
Description: Subject matter wherein the circuit breaker breaks two or more separate conducting paths for two or more phases of alternating current.

Patents under this class:

Patent Number	Title Of Patent	Date Issued
6335502	Vacuum switch and vacuum switch gear using the vacuum switch	Jan. 1, 2002
5210385	Low voltage circuit breaker with multiple contacts for high currents	May. 11, 1993
5091616	Self-contained switch for electrical distribution circuit	Feb. 25, 1992
4871889	Arcing contact assembly for a circuit breaker	Oct. 3, 1989
4788392	Tank type gas circuit breaker	Nov. 29, 1988
4673779	Low-voltage circuit breaker including a current transformer	Jun. 16, 1987
4614851	Contact sequencing arrangement for rotary double break switch	Sep. 30, 1986
4126773	Polyphase disconnecting switch arrangement	Nov. 21, 1978