Review on ⚡️ WOHHOM 100A Waterproof DC 12V-48V Circuit Breaker - Manual Reset Fuse for Trolling Motor, Auto, Car, RV, Marine, Boat - Overload Protection, Inverter, Current 30A-300A by Jamie Rogers

I used a 300A model between a 400Ah battery and a 3000W inverter with 2/0 wires and was only able to run the microwave for 4 minutes, before the voltage fell below 12 (with load). and the system turns off. I squeezed about 120 amps out of the battery. I removed the breaker and ran a direct positive lead between the battery and the inverter and the microwave worked perfectly, never shutting down or dropping voltage while running for 10 minutes. I would return it if I could because it's no use to me.