Patent ID: 6661329
Filing Date: 2003-12-09
Classification: H01H

Abstract:
An adjustable thermal trip assembly for a circuit breaker comprising:a bimetal having a fixed end and a free end which deflects in response to heat generated by current; a trip mechanism spaced from the free end of the bimetal; and an adjustable coupler comprising: a first pivoted member engageable by the free end of the bimetal for rotation by deflection of the free end of the bimetal; a second pivoted member rotatable to actuate the trip mechanism; a coupling member positioned between the first and second pivotable members to convert rotation of the first pivotable member by the free end of the bimetal into rotation of the second pivoted member to actuate the trip mechanism after a selected deflection of the free end of the bimetal; and a positioner adjustably positioning the coupling member relative to the first and second pivoted members to adjust a current/time characteristic value at which the trip mechanism is actuated.