I have them in some solar systems Saw it on YouTube and bought two to try. The 60 and 100 amp cases are the same size. They may be well suited for use in audio systems where the currents are dynamic rather than constant (which can result in more heat). For harsh environments, e.g. B. in combination with an inverter in a solar system; for insurance: I'd recommend looking at circuit breakers, which seem to be a lot more reliable in terms of strength and heat resistance. I don't consider these circuit breakers waterproof either, if that's the case.