C740A0 - Hardware monitoring critical problem

Continuing the discussion from C740A0 - Hardware monitoring critical problem:

Hi Iior,

I have just purchased a MM35 1R050-DIN to solve same issue I am having on OEM controller DC version, am I correct say that two poles of the limiter need to be wired into my circuit breaker live side? As we have single phase 240V with 2-pole (L and N) circuit breaker that is protecting the controller.

Your reply would be much appreciated. Thank you