electronic

As seen in the picture below there is a red fault light on and the rest of the system configured on network 1 has no power. The orange thing furthest to the left (pardon my lack of understanding) is running extremely hot Help appreciated.

Just wondering if the only reason some RCD's/RCBO's have functional earths is to allow the electronics inside the RCD/RCBO to remain active in the event the incoming neutral is lost or impaired casing a low/absent voltage between L & N. Any other reasons for functional earths? Are RCBO's/RCD's...