... the price you paid for your house.
Not sure relay or FETs in BMS can be trusted to reliably open and interrupt 20,000A fault current.
But that's exactly what class T fuses are tested for to obtain certification.
I've found the covers of some fuse holders difficult to remove without breaking. Others have a latch that looks better.
(Maybe if I'd filed a ramp on the cover before installing it ...)
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