4. A CIRCUIT BREAKER COMPRISING, IN COMBINATION, A STATIONARY CONTACT AND A MOVABLE CONTACT COOPRATING WITH SAID STATIONARY CONTACT TO OPEN AND CLOSE A CIRCUIT, A LATCHED TRIP MEMBER HAVING A FIRST STOP MEANS AND A SECOND STOP MEANS THEREON AND BEING RELEASABLE TO EFFECT AUTOMATIC OPENING OF SAID CONTACTS, A BIMETAL MEMBER, A MAGNETIC CORE MEMBER FIXEDLY SUPPORTED ON SAID BIMETAL MEMBER, SAID FIRST STOP MEANS POSITIVELY POSITIONING SAID BIMETAL MEMBER RELATIVE TO SAID TRIP MEMBERM AN ARMATURE, SPRING MEANS CONNECTING SAID ARMATURE TO SAID BIMETAL MEMBER, SAID SPRING MEANS BIASING SAID ARMATURE AWAY FROM SAID MAGNETIC CORE MEMBER AND INTO ENGAGEMENT WITH SAID SECOND STOP MEANS WHEREBY SAID SECOND STOP MEANS POSITIVELY POSITIONS SAID ARMATURE RELATIVE TO SAID MAGNETIC CORE MEMBER, SAID BIMETAL MEMBER BENDING AND MOVING SAID ARMATURE AND SPRING MEANS IN RESPONSE TO AN OVERLOAD CURRENT BELOW A PREDETERMINED VALUE TO EFFECT RELEASE OF SAID RELEASABLE MEANS, AND UPON THE OCCURRENCE OF AN OVERLOAD CURRENT ABOVE SAID PREDETERMINED VALUE, SAID ARMATURE BEING ATTRACTED TOWARD SAID MAGNETIC CORE MEMBER TO EFFECT RELEASE OF SAID RELEASABLE MEANS.