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Is it possible to use Vigi MH and Vigi MB module at 690V with Compact NSX range of circuit breaker.

VIGI module can work only up to 550 V.
For an application at 690V, you can use VIGIREX relay with compact NSX range of MCCB for earth leakage protection, because the toroid sensor of VIGIREX works up to 1000V.
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