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rickyd

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    3 phase (4 pole ) RCBOs exist combining an RCD and MCB function,

    Doepke certainly do them  example , as I think do Hagar  (in some configurations).

    When I last looked the Schneider Siemens derived solution was a to suggest a 3 phase MCB, plus an external shunt trip driven by a VIGI

    configured as a residual current sensor, which in comparison is a bit primitive.

    Since then ABB have released  these
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  • 0
    3 phase (4 pole ) RCBOs exist combining an RCD and MCB function,

    Doepke certainly do them  example , as I think do Hagar  (in some configurations).

    When I last looked the Schneider Siemens derived solution was a to suggest a 3 phase MCB, plus an external shunt trip driven by a VIGI

    configured as a residual current sensor, which in comparison is a bit primitive.

    Since then ABB have released  these
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