| 摘要 |
Electrical apparatus for magnetothermal and differential protection 1 of the type comprising an automatic protection breaker 3 provided with breaking mechanisms controlled by an electromagnet 5 slaved to an electronic device 2 for detecting differential currents Id present in a three-phase low-voltage electrical power distribution facility, characterised in that the electromagnet 5 comprises a first winding 7 and a second winding 8 which are independent structurally and are wired up respectively between a first phase voltage R and a second phase voltage 5 of the said three-phase system and a corresponding input of a supply circuit 4 for the electronic detection device 2. <IMAGE>
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