High voltage Circuit Court breaker tsis tuaj yeem tsuas yog txiav tawm lossis kaw qhov tsis muaj-load tam sim no thiab thauj khoom tam sim no hauv high-voltage circuit, tab sis kuj txiav tawm qhov overload tam sim no thiab luv luv-circuit tam sim no los ntawm kev ua ntawm cov khoom siv tiv thaiv relay thaum lub kaw lus tsis ua haujlwm. Nws muaj ib tug ncaj tiav arc extinguishing qauv thiab txaus tawg peev xwm
