Amendment 3 compatible device

During an eicr I have come across a wylex wrds  40/2 BS EN 61008 (RCD) Residual Current Device on a board for the solar inverter.

The diagram on the side seems to suggest it has contacts that disconnect the test button.also it does not seem to be marked in/out,line/load or arrows.

Would this mean that it's bi directional?

Also the BS EN 60898 mcb an nhxb20 is this bi directional?

Or should I just contact electrium 

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  • "During an eicr I have come across a wylex wrds 40/2 BS EN 61008 (RCD) Residual Current Device on a board for the solar inverter."

    Why was it installed, what purpose does it serve? Does the solar inverter circuit need RCD protection?

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  • "During an eicr I have come across a wylex wrds 40/2 BS EN 61008 (RCD) Residual Current Device on a board for the solar inverter."

    Why was it installed, what purpose does it serve? Does the solar inverter circuit need RCD protection?

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