Internal Relay Question - MultiPlus-II 8000

I would like to see the cycle lifetime of the various relays within the MultiPlus-II 8000 unit. I have an idea for most of the relays pictured based on their cycle counts and specs, but not the Panasonic relay in the top left corner (circled in yellow). What is its purpose? My only clue so far is its rated cycle count is only 30,000-50,000 as opposed to all others 1,000,000+ . Part number: AHES4192

4 large, white relays: the main ac input transfer switch relays

White relay in bottom right corner: aux relay

Bottom black relay just barely visible beneath white relays: ground relay potentially?