Don't buy this breaker

[atatistcheff]

I know y'all are probably smarter than this but if you see an inline breaker like this on Amazon/eBay/etc. don't waste your money. I should have tested this while I was still in the return window - lesson learned. The "150A" breaker popped at 120A after about 5 seconds. Second attempt caused it to fail internally and start providing intermittent power. Live and learn I guess. Breakers are cool but fuses seem like a more accurate way to allow the current you want while protecting against accidental shorts.

 

[Rider]

You're not the first person to flag this product.

 

[atatistcheff]

I think the specs really mean "30A continuous with microsecond peaks to 150A"

 

[MrNatural22]

I’m having the same problem with a cheaper EBay breaker. The first one failed in two weeks and the replacement one they sent was DOD!? emailed them and told them I’m done and I ordered a quality Bussman more $$
they were honest enough to admit they were having having nothing but trouble with this lot they were selling and cheerfully sent me a refund. Told me to keep the faulty ones. LOL

 

[Will Prowse]

Dang that inline breaker I had on my system pushing 75% of its amp limit and never had a problem for months. Worked great for me. Good to know that they are crap now.

Yeah fuses rock

 

[TCgreg]

Quality dc circuit breakers work fine. They are more expensive but Blue Sea 187 series breakers have always worked well for me even near rated max. They are designed for marine use and very well made.

 

[Deleted member 783]

From what I can gather, these work well up to about 40 amps. The failure rate seems to go down drastically over that.

 

[Delta-V]

Yeah, I have a similar in-line 40A breaker that pops at 20A. It works, just not at its rated amps.

 

[Supervstech]

I have several similar ones still in boxes, I use them as an overload safety, or an unloaded switch. The trick to using them is 50% over expected demand, and NEVER switch them open or closed with a load on them. Dc arcs melt and damage stuff like this.

An overload for a few microseconds at 50% isn’t going to fry any inverter, or wiring. It’s the sustained overload that burns stuff.

 

[grizzzman]

I bought one at 300amp rating. It pops at times at 55amps. It was cheap get what you pay for.

 

[Supervstech]

Wow... 55 amps. Crazy. Yup, toss that junk...

 

[Deleted member 165]

From what I can gather, these work well up to about 40 amps. The failure rate seems to go down drastically over that.

Mine are popping at 22. I'm ditching them for ceramic fuses.

 

[50acres&acabin]

I really like the Midnight din rail mount breakers paired with their baby box for lower amp situations and higher amp such as inverter cable protection these T fuses are great https://www.solar-electric.com/f150ampcltfu.html and a holder: https://www.solar-electric.com/fuonfor110to1.html or you can buy as a package.