Review on Premium High-Current Circuit Breaker, Allkpoper 30A-300A Amp Breaker with Manual Reset Switch and Fuse, Waterproof for Boat Marine RV Yacht Battery Trailer Bus Truck, 12-48V DC (30A) by Rob Parsons

30A circuit breaker and it won't trip. I connected two heaters to my inverter and measured with a 500A shunt. I used 85 amps for a full 30 seconds (about 1100 watts) and it didn't work. At 30A it should work. It will burn down someone's house or car. I haven't tested past 86A so I don't know how long it actually takes to disable this piece of junk.