Mercedes-Benz 300E AC Relays
The AC relay transfers power from the climate controls to the AC clutch to engage or disengage it.
This is one of many components that may need troubleshooting in order to determine the point of failure when an AC compressor stops working.
Replacing the AC Relay should be as simple as replacing a fuse on most vehicles.
We stock and sell a wide variety of quality AC relays from these manufacturers: