We use those wide terminal relays in some of our systems to drive the triple condenser fans or the double evaporator fans. In some cases they run both. I would consider that to be a reliable option for up to 45-50A continuous. They are also used in Ford ABS motor circuits and in some of the diesel systems as well.
Looks like the Mercedes # is actually a round pin relay with a 40A fuse installed in the relay (see photo below). Very cool.
Here's a relay with wide terminals and a socket:
https://www.amazon.com/VF7-11F11-S01.../dp/B00EA5H6P8
