Review on ⚡️ NDB5 J415 1P Circuit Breaker: Enhanced Supplemental Protection for Electrical Systems by Scott Ramu

Two important points. one. The Ue marking on it is given as AC400V 50Hz. I live in North America where 60Hz is used. I'm not sure if it's some sort of maximum rating, but searching the internet tells me it's bad and can cause the circuit to shut off faster. Two. The clamps holding the block to the rail broke at one of the breakers. Looks like poor design and the plastic clips are brittle. I think keep looking