公开(公告)号：US06720856B1

公开(公告)日：2004-04-13

申请号：US10325252

申请日：2002-12-18

申请人： Christian V. Pellon ,  Nicholas V. Pellon ,  William J. Bentley ,  Eric W. Morrison

发明人： Christian V. Pellon ,  Nicholas V. Pellon ,  William J. Bentley ,  Eric W. Morrison

IPC分类号： H01H7330

CPC分类号： H01H71/7427 ,  H01H73/30 ,  H01H2071/084

摘要： A thermally compensated circuit breaker has a movable contact assembly (24) which mounts a movable electrical contact (24m) for movement between open and closed contacts positions with a stationary electrical contact (26). The contacts are maintained in the closed circuits position by a latching mechanism (24b, 28g) which prevents opening of the contacts through an opening contacts force provided by a spring (24e). A current carrying trip arm (40a, 44a) deflects upon sufficient I2R heating to transfer motion to the latch to separate the latch (24b) from the latch receiving catch (28g) to trip the circuit breaker. The trip arm (40a, 44a) is part of a pivotably mounted actuator assembly (40, 44) having a movable end portion spaced from the pivot disposed adjacent a motion transfer member (28c). A calibration screw (42a) is located so that the longitudinal axis is in line with a movable end portion of the actuator assembly and the motion transfer member. In one embodiment the head of the calibration screw is captured in a slot in the free end of a calibration base (42d) attached to the trip arm so that deflection of the trip arm directly transfers motion to the motion transfer member and in another embodiment the calibration screw head is captured in a slot in the free end of the trip arm so that a bowing deflection of the trip arm causes a calibration base (46) to which it is attached at an end thereof to rotate with the calibration base directly transferring motion to the motion transfer member.

摘要翻译： 热补偿断路器具有可移动接触组件（24），该可移动接触组件（24）安装用于在具有固定电触点（26）的开放和闭合触点位置之间移动的可移动电触头（24m）。 触点通过闩锁机构（24b，28g）保持在闭合位置，该闭锁机构防止触点通过由弹簧（24e）提供的开启接触力而打开。 载流跳闸臂（40a，44a）在足够的I 2 R加热时偏转以将运动传递到闩锁，以将闩锁（24b）与闩锁接收卡扣（28g）分离以使断路器跳闸。 跳闸臂（40a，44a）是可枢转地安装的致动器组件（40,44）的一部分，其具有与邻近运动传递构件（28c）设置的枢轴间隔开的可移动端部。 校准螺钉（42a）被定位成使得纵向轴线与致动器组件和运动传递构件的可移动端部一致。 在一个实施例中，校准螺钉的头部被捕获在附接到跳闸臂的校准基座（42d）的自由端中的狭槽中，使得跳闸臂的偏转直接将运动传递到运动传递构件，并且在另一个实施例中 校准螺丝头被捕获在跳闸臂的自由端的狭槽中，使得跳闸臂的弯曲偏转导致其附接到其的端部处的校准基座（46），其中校准基座直接传递运动 到运动传递构件。