Class T Fuse Block, Fuse Holder with 400 Amp Fuse, Heavy Duty Slow Blow for Inverters, Car Audios, etc

The build is high quality. Was thinking just Class T Fuse; however, this works better for inverter protection, slower blowing, able to handle surges. The fuse has ample current interrupting capabilities.

great for the money

I bought this to protect my 3000w victron inverter. Victron recommends (2) 1/0awg cables to supply power to the inverter. The holes in the ends are just small enough that it is extremely difficult to get both cables in, and the bolt height is almost too short to get 2 ring terminals to bolt down. I think if you was using just one cable this box would work great. I gave it 4 stars because during install, one of the 4 screws that is supplied broke the head off and the mounting holes are very deep. Too deep for a normal length bit in an impact driver. I had to use a longer bit, that not everyone might have laying around.

The slots that hold the bolt head from spinning were machined too large for the bolts used and therefore the bolts spin when you attempt to tighten down the lugs. I have since filled those voids with epoxy. However, after doing some research, I have identified that this T fuse is unique and unreliable.

This fuse holder is not compatible with any standard T Class fuse and the material of the box risks melt down. You cannot source a replacement fuse for this style fuse holder. It’s a bummer because this the only fully enclosed T Class fuse holder options.

Quite large for my needs. It may suffice for others. Fuse description states slow blow although T fuse should be fast blow. Returned.

The backing plate to hold the bolt is made of plastic. I double check my connections often and notice at least one of the lugs was no longer holding torque. When I would go to tighten it it spun completely around the. Very poorly designed!!

So frustrated with false advertising on these things. It says it’s a class t fuse, which technically it may be. But it uses a non-standard fuse. Typical class t fuse won’t fit. So if the one that comes with it blows, you are kind of out of luck.