Medium voltage breaker conductor with an electrically efficient contour

A conductive member for a circuit breaker high voltage portion conductor assembly, said conductive member comprising:

• a body;
• said body includes a transfer portion and a coupling portion;
• and
• wherein said body transfer portion has an electrically efficient contour;
• and wherein:
• said body transfer portion is substantially cylindrical;
• said body transfer portion includes a number of slots extending through said body transfer portion;
• wherein each slot extends generally vertically through said body transfer portion;
• and
• wherein said slots define a number of fins.

A conductive member for a circuit breaker high voltage portion conductor assembly, said conductive member comprising:

• a body;
• said body includes a transfer portion and a coupling portion;
• wherein said body transfer portion has an electrically efficient contour;
• and
• wherein said body is a unitary body.

A vacuum circuit breaker comprising:

• a low voltage portion, and a high voltage portion;
• said low voltage portion including an operating mechanism;
• said low voltage portion operatively coupled to said high voltage portion;
• said high voltage portion including a conductor assembly and a vacuum interrupter assembly;
• said conductor assembly including a first terminal, a primary first conductor, a primary second conductor, and a second terminal;
• said vacuum interrupter assembly including first stem assembly, a first contact, a second contact, a second stem assembly, and a vacuum housing;
• said first contact coupled to, and in electrical communication with, said first stem assembly;
• said first stem assembly coupled to, and in electrical communication with, said first conductor;
• said second contact coupled to, and in electrical communication with, said second stem assembly;
• said second stem assembly coupled to, and in electrical communication with, said second conductor;
• said first contact disposed in said vacuum housing;
• said second contact movably disposed in said vacuum housing;
• said operating mechanism operatively coupled to said second contact, wherein said second contact is structured to move between a first position, wherein said second contact assembly contact member is not directly coupled to said first contact assembly contact member, and a second position, wherein said second contact assembly contact member is coupled to, and in electrical communication with, said first contact assembly contact member;
• wherein one of said primary first conductor or said primary second conductor includes a body;
• said body includes a transfer portion and a coupling portion;
• and
• wherein said body transfer portion has an electrically efficient contour;
• wherein said body transfer portion also has a thermally efficient contour;
• whereby said body transfer portion has an electro-thermally efficient contour;
• wherein said body transfer portion includes a number of slots extending through said body transfer portion;
• and wherein:
• each slot extends generally vertically through said body transfer portion;
• wherein said slots define a number of fins;
• wherein said number of fins includes a number of inner fins, each inner fin disposed between adjacent slots;
• and
• wherein said number of fins includes two outer fins, each outer fin disposed between a slot and an adjacent outer lateral side of body transfer portion.

A vacuum circuit breaker comprising:

• a low voltage portion, and a high voltage portion;
• said low voltage portion including an operating mechanism;
• said low voltage portion operatively coupled to said high voltage portion;
• said high voltage portion including a conductor assembly and a vacuum interrupter assembly;
• said conductor assembly including a first terminal, a primary first conductor, a primary second conductor, and a second terminal;
• said vacuum interrupter assembly including first stem assembly, a first contact, a second contact, a second stem assembly, and a vacuum housing;
• said first contact coupled to, and in electrical communication with, said first stem assembly;
• said first stem assembly coupled to, and in electrical communication with, said first conductor;
• said second contact coupled to, and in electrical communication with, said second stem assembly;
• said second stem assembly coupled to, and in electrical communication with, said second conductor;
• said first contact disposed in said vacuum housing;
• said second contact movably disposed in said vacuum housing;
• said operating mechanism operatively coupled to said second contact, wherein said second contact is structured to move between a first position, wherein said second contact assembly contact member is not directly coupled to said first contact assembly contact member, and a second position, wherein said second contact assembly contact member is coupled to, and in electrical communication with, said first contact assembly contact member;
• wherein one of said primary first conductor or said primary second conductor includes a body;
• said body includes a transfer portion and a coupling portion;
• wherein said body transfer portion has an electrically efficient contour;
• and wherein:
• said body transfer portion is substantially cylindrical;
• said body transfer portion includes a number of slots extending through said body transfer portion;
• wherein each slot extends generally vertically through said body transfer portion;
• and
• wherein said slots define a number of fins.

A vacuum circuit breaker comprising:

• a low voltage portion, and a high voltage portion;
• said low voltage portion including an operating mechanism;
• said low voltage portion operatively coupled to said high voltage portion;
• said high voltage portion including a conductor assembly and a vacuum interrupter assembly;
• said conductor assembly including a first terminal, a primary first conductor, a primary second conductor, and a second terminal;
• said vacuum interrupter assembly including first stem assembly, a first contact, a second contact, a second stem assembly, and a vacuum housing;
• said first contact coupled to, and in electrical communication with, said first stem assembly;
• said first stem assembly coupled to, and in electrical communication with, said first conductor;
• said second contact coupled to, and in electrical communication with, said second stem assembly;
• said second stem assembly coupled to, and in electrical communication with, said second conductor;
• said first contact disposed in said vacuum housing;
• said second contact movably disposed in said vacuum housing;
• said operating mechanism operatively coupled to said second contact, wherein said second contact is structured to move between a first position, wherein said second contact assembly contact member is not directly coupled to said first contact assembly contact member, and a second position, wherein said second contact assembly contact member is coupled to, and in electrical communication with, said first contact assembly contact member;
• wherein one of said primary first conductor or said primary second conductor includes a body;
• said body includes a transfer portion and a coupling portion;
• wherein said body transfer portion has an electrically efficient contour;
• and
• wherein said body is a unitary body.