Gotcha
@Corbet. Blue Sea seems to sell 3 versions, the #6 screw (like I found on Mouser, those are 20A), a #8 (30A) and #10 (65A) like you're using. All squares with the OEM.
Was curious because you can sometimes find them cheaper (like the Littlefuse 880159 model of the Blue Sea 7620100 ML-ACR used to be about $50 cheaper) and they sometimes sell accessories Blue Sea doesn't. Like a terminal cover.
The Blue Sea 2608 is probably the Eaton TB400-08, but unfortunately Eaton don't make a cover for it. FWIW, Eaton rates them for 75A per pole, so that's nice.
Another FWIW, when trying to figure out what they recommended for over-current came across this disclaimer, which is a round about way of saying what I was asking. When you expose the ends of the wire moisture and corrosion can creep up under the insulation and get inside the device.
As you know they say they don't need them. Having designed my fair share of over-current and inrush limiting I don't 100% trust it under short circuit (FETs tend to fail shorted first, which avalanches to large current that cooks them into blowing open). So belt-and-suspenders here and usually put fuses or breakers anyway...