发明授权
US4114004A Gas-blast electric cut-out device 失效
气体电动切断装置

Gas-blast electric cut-out device
摘要:
A gas-blast circuit-breaker comprises arcing contacts provided with nozzles of the same diameter, operating means ensuring an original movement of a mobile one of the arcing contacts in the opposite direction to that of the mobile main contact at the opening of the device.
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