Contactor with integrated drive shaft and yoke

An electrical switching device, comprising:

• a housing;
• and
• internal components within said housing, said internal components comprising:
• fixed contacts electrically isolated from one another, said fixed contacts at least partially surrounded by said housing;
• a movable contact having a top surface and a bottom surface, and is movable to allow current flow between said fixed contacts when the movable contact contacts said fixed contacts;
• a drive shaft to move said movable contact;
• a lower yoke on said bottom surface;
• and
• an upper yoke on said top surface, said upper yoke has comprising:
• said drive shaft, and
• a shaft extension passing through said movable contact and said lower yoke, said shaft extension integral to said upper yoke and said drive shaft,
• wherein said upper yoke and said lower yoke:
• form a magnetic circuit to produce a magnetic force,
• attract each other, and
• restrict movement of said movable contact away from said fixed contacts, and
• wherein said upper yoke comprises extensions or protrusions.

An electrical system, comprising:

• an electrical circuit;
• and
• an electrical switching device electrically connected to said electrical circuit to open or close said circuit, wherein said switching device comprises:
• a housing;
• internal components within said housing, said internal components comprising:
• fixed contacts electrically isolated from one another;
• a movable contact having a top surface and a bottom surface, and is movable to allow current flow between said fixed contacts when said movable contact contacts said fixed contacts;
• a drive shaft to move said movable contact;
• a lower yoke on said bottom surface;
• an upper yoke on said top surface, said upper yoke comprising:
• said drive shaft, and
• a shaft extension passing through said movable contact and said lower yoke, said shaft extension integral to said upper yoke and said drive shaft,
• wherein said upper yoke and said lower yoke:
• form a magnetic circuit to produce a magnetic force,
• attract each other, and
• restrict movement of said movable contact away from said fixed contacts, and
• wherein said upper yoke comprises extensions or protrusions.