| 摘要 |
<p>The invention relates to a withdrawable unit system for an electric switching device. The invention overcomes the disadvantages of known such systems by disclosing a withdrawable unit system with a housing (11) containing a access door (13), which gives access to all control elements of the unit and which can be closed as densely as it meets the requirements of international standards such as DIN EN 60529 for example. In further embodiments the current invention suggests a moveable unit (30) with an effective and reliable possibility for blocking and releasing the electrical switching device in and from at least three defined positions withdrawn, test and plugged-in by using a slide (150), a lever (120) and notches (131, 132, 133) with dedicated notch blocking devices (140).</p> |
