Push-to-trip high-amp circuit breaker

A high amperage manual reset D.C. circuit breaker comprising;

• a heat resistant electrical insulating plastic housing defining a rectangular central body cavity, with a base, front wall, a rear wall and two side walls;
• a blind hole defined by said cavity base adjacent said rear wall;
• a pair of spaced terminal bolts extending through said base with a pair of contact nuts being external of said housing, said spaced terminals being placed in series with the circuit to be protected;
• an insulating plastic rotatable shaft having one end rotatably mounted in said blind hole and the other end extending out of said housing for a predetermined distance;
• a cover to close said housing;
• a seal placed between said housing and said cover to seal said cover to said housing;
• means to permanently attach said cover to said shaft;
• said shaft other end extending out of said cover for a predetermined distance;
• a seal ring attached to said cover and said shaft;
• a pair of longitudinally spaced first and second integral bars extending from said rotatable shaft;
• said first bar being adjacent the top of said housing;
• a paddle shaped bar extending a predetermined distance from said first bar, said second bar having a relatively straight side, said second bar being sized to provide predetermined electrical insulation.
• a generally rectangular thermally activated bistable mechanical element, a pair of dimples formed on an upper surface of and adjacent opposite sides of said bistable element;
• a first contact being connected to one of said terminals, said first contact also connected to end of said bistable element by a washer and a mechanical stake joint wherein the one end of said bistable element always remains stationary with respect to the first contact and in electrical contact with the first contact;
• a second electrical contact attached to and extending from the underside of the other end of said second electrical contact;
• said other end of said bistable element being free to move in a relatively vertical direction;
• a vertical plane passing through a center of said first contact and a center of said second contact being perpendicular to a vertical plane passing through centers of said pair of dimples;
• a third contact electrically connected to said other terminal and being positioned below said second contact, said second and third contact normally begin in electrical contact with each other to close the circuit of the circuit breaker;
• said second bar having its side in contact with the outer surface of said second contact when the electrical circuit is closed;
• a spring attached to said first bar and said housing, said spring exerting a rotational force on said plastic shaft to urge the second bar in contact with said second contact and toward said second contact;
• said bistable element having a predetermined current response to quickly deform when there is a predetermined over current, said deformation causes said other end to vertically rise and to cause said second contact to separate from said third contact by a predetermined distance;
• wherein said second and third contacts are separated said spring rotates to position said second bar between said second and third contacts and electrically separate second and third contacts from each other;
• and
• a manual trip means to cause said bistable element to deform, said deformation causes said second contact to separate form said third contact.