40A blade fuses

[sugarcoat]

I have a new Eco-Worthy KP2000 inverter that has two blown spade type 40A fuses. They are like nothing I've ever seen cause they are a small "female type" meaning they install onto tabs on the board. Anyone have a source? The mfg. seems worthless.

 

[wpns]

Never seen anything like that before. Is it possible that they are regular blade fuses that were soldered into the board, and are not meant to be replaceable?

 

[timselectric]

That's my assumption, also.

 

[robbob2112]

Renogy uses standard blade fuses inside their inverter, soldered to the board... if they blew and got hot i can see them coming apart like that.

 

[robbob2112]

In the case of the Renogy inverter the use 10 x 10amp blades side by side, not sure why they do that

 

[SparkyJJO]

Never seen anything like that before. Is it possible that they are regular blade fuses that were soldered into the board, and are not meant to be replaceable?

That is exactly what it looks like.
I'd be modifying it with a fuse holder!

 

[wpns]

I have a new Eco-Worthy KP2000 inverter that has two blown spade type 40A fuses. They are like nothing I've ever seen cause they are a small "female type" meaning they install onto tabs on the board. Anyone have a source? The mfg. seems worthless.

Are there multiple fuses in parallel? 40 A makes no sense for either the 12 V input or the 220 V AC output for a 2 kW inverter.

 

[sugarcoat]

Are there multiple fuses in parallel? 40 A makes no sense for either the 12 V input or the 220 V AC output for a 2 kW inverter.

I originally thought the fuses had blown, but they are not (the fuse caps look like fuses and are empty, leading me to think they were blown. Now the inverter is giving an F07 3.6 error code, and I can find no reference for that.Planning to search this message board next.

 

[robbob2112]

The renogy inverter used multiple parallel fuses of the same value to tighten up the time/current curves.... Basically one fuse will blow quicker than the other, but once one blows they all blow.

 

[Recovering EE]

I have a new Eco-Worthy KP2000 inverter that has two blown spade type 40A fuses. They are like nothing I've ever seen cause they are a small "female type" meaning they install onto tabs on the board. Anyone have a source? The mfg. seems worthless.

That looks like a standard automotive blade fuse, that's had its guts ripped out. Like somebody else wrote...I'd be unsoldering them all, and replacing them with auto blade fuse sockets.

 

[Daddy Tanuki]

That looks like a standard automotive blade fuse, that's had its guts ripped out. Like somebody else wrote...I'd be unsoldering them all, and replacing them with auto blade fuse sockets.

the problem with those small blade type fuse is the amount of heat the generate at the fuse to holder contact. I would solder leads to the board and run leads to a proper fuse bock mounted outside the case using either max fuses or something that can actually handle that much properly.

 

[BarracudaBob]

We used "maxi fuses" in vehicles for the radio equipment for years. They lasted better than I expected. Everything went to resettable thermal breakers.

 

[Just John]

the problem with those small blade type fuse is the amount of heat the generate at the fuse to holder contact. I would solder leads to the board and run leads to a proper fuse bock mounted outside the case using either max fuses or something that can actually handle that much properly.

This. Don't use blade fuses and holders, solder in a different fuse holder. Those blade fuse holders get way too hot at 40 amps.

 

[BarracudaBob]

I used the 80's on inverters on the power cord before. Water resistant rubber cover but that was all 12Vdc. They are not rated for 48V
Blue Seas Holder