Electrical contactor and interrupter employing a rotary disc

An electrical contactor for controlling the flow of electrical power comprising:

• a case for enclosing said electrical contactor;
• control means for signalling said electric contactor to commence and terminate the conduction of electrical power;
• a disc rotatably mounted on said frame member formed of an electrically insulating material;
• a first electrical disc contact affixed to said disc;
• actuation means for rotating said disc upon receiving an energization signal from said control means;
• spring means for rotating said disc in a direction opposing that produced by energization of said actuation means;
• a ramp affixed to said disc relatively close to said electrical disc contact, said ramp having a thin first edge and a thicker second edge, said thin first edge being adjacent to said first electrical disc contact and said ramp extending in a substantially radial direction opposite to the direction of rotation of said disc when rotated by the energization of said actuation means;
• a second electrical disc contact having a first end to be connected to a source of electrical power and a second end having a disc contact portion directly opposed to said first electrical disc contact when said actuation means is energized and where said disc contact portion encounters said ramp being forced away from said disc thereby when said actuation means is non-energized;
• and
• a circuit protection contact having a first arm rotatably mounted to said case and electrically connected to said first electrical disc contact said first arm having a first electrical contact portion and a second arm rotatably mounted to said case having a second electrical contact portion loaded against said first arm where said first arm electrical portion contacts said second arm electrical portion allowing electrical power to flow therebetween when said electrical power is within the desired operating limit and where said first arm moves away from said second arm against said spring load when said electrical power is at a very high level thereby interrupting the flow of electrical power from said first electrical contact portion to said second electrical contact portion.