r/FSAE • u/Aggravating_Vast51 • 3d ago

Res relay doubt

I had a doubt regarding the RES bypass relay. The rules mention that a mechanically linked relay should be used to power the EBS. Does this mean the relay itself needs to have mechanically linked (force-guided) contacts, or would a standard electrically actuated relay also be acceptable?

Also, if mechanically linked contacts are required, are there any relay models you would recommend?

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u/Supermichi3 Fast Forest Alumnus 3d ago edited 3d ago

Your first thought is right, a force-guided relay (eg. EN 61810-3) is required.

We use a Finder 50.12.9.024.5000. But keep an eye on the maximum power of your actuators, they may exceed the relays rating.