| 摘要 |
<p>Circuit breakers, whose switch bolt has a rotatably supported latch (1), which supports a contact piece (2) on the one hand and, on the other hand, is latched to a trip device (3), a manual operating device (4) and at least one switch spring (5) acting on the latch (1). It is provided according to the invention that the latch (1) is interrupted by a coupling point (23), close in front of the latching point (11), so that there is a shorter partial latch (14) between its latching point (11) and a bearing (16) on the housing, on the other side of the coupling point (23), and there is a longer partial latch (15), which extends between the coupling point and at least up to the engagement of the switch spring (5), the partial latches (14, 15) overlapping in the coupling point and the shorter partial latch (14) being supported such that it can rotate in a linking guide (17) between its latching point (11) and its bearing (16), so that, at least on the shorter partial latch (14), the force is reduced with respect to the latching point (11), by selection of the lever arms from the coupling point (23) to the bearing (16) on the housing, and to the latching point (11). <IMAGE></p> |
