Blue Sea Systems 5117 225A Class T Fuse

Anyone that deals with these fuses nose that they can be very hard to find. We bought three from this vendor and they have worked excellent for the application.

We trust Blue Seas for high amperage or voltage electrical parts. We don’t use generics here. Great products. This is a spare we ordered “just in case”

Worked perfect. Great value. Ordered an extra one for stock.

Fuse looks good, haven’t blown one but assume they work as designed. I had previously bought a 350 amp T fuse from another supplier for a lithium battery application, the holes on that would not fit into the battery terminal bus I bought, however this 250 amp did,

Great seller

Used one of these on a 48V battery pack capable of delivering >500A and I accidentally shorted the terminals on my inverter with a screwdriver. The fuse blew before the BMS even noticed and saved both me and my equipment.Lessons learned: always use class T fuses on high current battery packs, always have an extra fuse on hand, always use insulated screw drivers if you're going to do something dumb like I did, but lastly just don't do anything dumb with live wires!

I always go with Blue Sea when I can. Looks solidly built as did my last one (5 years ago).

What can you say about a fuse...it either conducts current, or it breaks the connection? This one resides quietly in one of my trawler's 8D (house battery) boxes between the + cable connection and the pure sine wave inverter. I can only hope it will work as expected to save my thousand dollar inverter if it becomes necessary. I will say I rely on, as many boat owners do, Blue Sea products.