I haven't tested the waterproofing but I think it's ok. The first thing that struck me about this device was that it didn't have a button to open it like most do. Maybe that's good; You mfgr don't want your hand around when it busts 250 amps when manually opening. I used a 12V high current rotary switch for an on/off function that this switch doesn't provide. There is a normal reset lever. I haven't tested the device to see if it can handle higher currents. I'll be putting about 200 amps on it over the next few weeks and will report back here if I run into any problems. Oh BTU, this device is not in the standard CB-285 form factor. It's bigger in most ways. It has heavier terminals than the 150 amp Buss CB285.
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