Single pole and switched neutral vs DP for EV

That particular  RCBO does disconnect the neutral, and would therefore meet 722.531.3.1.

However unlike a real dual pole RCD it has a strong sense of polarity, and the L N markings should  be respected. Presumably the MCB part senses on live only, and the switch  parts may not have the same arc traps on the neutral contact. From a safe isolation perspective, that's fine - its the gap once its open that matters.

However also be aware of confusion about devices advertised as 'SPSN' - it can be either  "Single pole, solid neutral" or 'Single pole switched neutral' at least in some older datasheets before the single module width sort with 2 moving contacts became popular.

To add water to troubled oil, some devices advertised as double pole or all pole also have a strong sense of L and N, especially on 3 phase, where N breaks late and makes early, relative to phases.

Mike.

That particular  RCBO does disconnect the neutral, and would therefore meet 722.531.3.1.

However unlike a real dual pole RCD it has a strong sense of polarity, and the L N markings should  be respected. Presumably the MCB part senses on live only, and the switch  parts may not have the same arc traps on the neutral contact. From a safe isolation perspective, that's fine - its the gap once its open that matters.

However also be aware of confusion about devices advertised as 'SPSN' - it can be either  "Single pole, solid neutral" or 'Single pole switched neutral' at least in some older datasheets before the single module width sort with 2 moving contacts became popular.

To add water to troubled oil, some devices advertised as double pole or all pole also have a strong sense of L and N, especially on 3 phase, where N breaks late and makes early, relative to phases.

Mike.