Thanks very much for the inquiry. Climate Class Ratings for 3 - Way Fridges are a hot topic (pun intended). The European Union (CEN) fridge performance standard is becoming increasingly accepted and the main rating that caravan enthusiasts look out for is the “T” rating.
Climate class ratings are as follows:
T Rating (tropical) - are designed and rated to work up to 43 degrees C
ST Rating (sub-tropical) - are designed and rated to work up to 36 degrees C
SN and N (sub normal and normal) - are designed and rated to work up to 32 degrees C.
Most of the Dometic [RM] range of fridges are T Rated.
The RM8501, RM2355 and RM2350 are ST Rated.