Patent ID: 7859369
Filing Date: 2010-12-28
Classification: H01H

Abstract:
1. A method of thermally calibrating a circuit interrupter, said method comprising: employing a circuit interrupter under test; including with said circuit interrupter under test a deformable frame having an elongated slot, an elongated deformable portion adjacent the elongated slot and a movable portion adjacent the elongated deformable portion; coupling a thermal trip assembly to the movable portion of said deformable frame; employing said thermal trip assembly having a first thermal response; straddling the elongated deformable portion of said deformable frame with a tool; rotating said tool in a first rotational direction and responsively deforming said elongated deformable portion and moving the movable portion of said deformable frame in a first direction, in order to calibrate said thermal trip assembly for a second thermal response, which is different than said first thermal response; and rotating said tool in a second rotational direction, which is opposite said first rotational direction, and responsively deforming said elongated deformable portion and moving the movable portion of said deformable frame in a second direction, which is opposite said first direction, in order to re-calibrate said thermal trip assembly for a third thermal response, which is between said first and second thermal responses.