ANJOSHI Circuit Breaker 200amp 50A-300A with Manual Reset Home Solar System Fuse Holder for Car Audio and Amps Protection 12V-24V DC Reset Fuse Inverter Replace Fuses

I have this breaker as part of my travel trailer electrical system, which includes lithium battery and 2000W inverter. The BMS is rated at 150A, and the wiring is 0-gauge. I found that the breaker trips when I run the microwave oven for more than 2 minutes, when pulling 65 amps. I have had to reset the breaker many times because of this. Recently, I stumbled on a youtube video (ksWy5Uld_cM) which described the exact same problem. He disassembled the breaker and concluded that it was tripping due to overheating, and that was due to some problems with the manufacturing and design.Now I have a clear explanation, I can say that this breaker is mostly useless. It's not totally useless, because it will probably not allow more than 200a to flow, so it will protect wiring, but it does NOT work as intended.So I plan to discard this breaker, and get a good one. I see that Anjoshi offers two types of breakers, the one I got ($15) and a 'waterproof' one ($20). I plan to try that more-expensive one to see if it behaves any better. I also looked at Blue Sea and Bussmann breakers. These ones are the same basic design (Thermal breaker) so I would expect them to behave similarly.I have updated this review to not be so harsh on this product. I got a bad one, that's all, but I'm confident that a replacement will perform better. Anjoshi, very quickly helped me with a refund, so now I'll go shopping for a similar but better breaker.

A+

I bought this for my 1500w inverter. When i try to make a quick cup of coffee it will trip every time (about 30 seconds). I put a DC clamp on meter on it to see what amperage it is tripping at and it was at 138 amps. I have 2 4D batteries totaling 2200 amp and i figured that would be enough to make a cup of coffee at a rest area. I can not say this is bad but my calculations tell me I only need 150A breaker and this is a 200A

I got two of these 200amp breakers for my RV solar system. I ran them in parallel with huge, custom copper buses connecting them to 4/0 copper wires, so they should be able to handle 400 amps. Instead, they got very hot and consistently tripped almost in unison after about 2-3 minutes with 140 amps between the two, so 70 amps each. The voltage drop across the terminals was 90 mV at 140 amps (again, two of these 200 amp breakers in parallel). Now compare that with the mere 44mV drop I saw across my 300 amp switch at 140 amps. Bottom line: These 200amp breakers can't even handle 70 amps. Avoid.

I'm not sure if device as a whole can safely handle 200A current. Terminals are small and contact surface is tiny.IDK, but if you are looking to protect the circut and prevent fire hazard - I would consider going with ANL type of fuse (preferably one accepting wire gauge you are using).

Works as expected

works great for my solar system

1/4" connections, very little contact area for lugs to connection. Base of connection point sits lower than framework. Not trusting it with 250amps.