300Amp DC Circuit Breaker Car Auto Marine Stereo Audio Fuse 12V by UPEOR

I installed this in my RV with solar and while out camping everytime I started my microwave it would pop. I moved some things around and used a 100amp and it didn't pop. This is a 300amp that popped every time and the 100AMP did not. It could be a bad breaker.

Just as expected...no letdowns or disappointments.