发明名称 |
Protective switch |
摘要 |
The apparatus of the invention comprises a case housing a fixed contact and a mobile contact carried by a pivoting lever, with resilient return to the closure position, a rocking lever adapted for acting on the pivoting lever in the opening direction in response to an electric fault and a manual control member connected to the pivoting lever. A single spring exerts on the pivoting lever a first torque in the closure direction and on a drive piece blockable by the rocking lever a force adapted to generate on the lever a second torque antagonistic to and greater than the first one. With the manual control member a third torque antagonistic to and greater than the first one is exerted on the pivoting lever.
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申请公布号 |
US4668926(A) |
申请公布日期 |
1987.05.26 |
申请号 |
US19860828485 |
申请日期 |
1986.02.12 |
申请人 |
LA TELEMECANIQUE ELECTRIQUE |
发明人 |
COMTOIS, PATRICK;INGRAIN, RAYMOND;MOREAU, LUC;PAGGI, SERGE |
分类号 |
H01H71/50;(IPC1-7):H01H75/00 |
主分类号 |
H01H71/50 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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