I brought some single pole ETA breakers that are 60 & 80A, (Mfr. Part No8345-B01A-U3M0-DB1B1B-80A) used as inline switches for 50-60amps continuously at 12V. Both models terminals have M6 bolt threads, but the contact area at the bottom of the thread is just 7mm in diameter & even a 6mm stud ring lug just doesn't look to get a decent contact. A google search shows images of the switch & you can see how small the contact area is.
Does this look safe for these currents?
thanks