VBs sab hauv tsev high-voltage nqus Circuit Court breaker yog peb-theem sab hauv tsev khoom ntawm AC6oHz thiab ntsuas qhov hluav taws xob ntawm 12 KV siv los tswj thiab tiv thaiv cov khoom siv hluav taws xob hauv kev lag luam thiab kev lag luam mining, fais fab nroj tsuag, transformer substations. lub sijhawm no, nws tuaj yeem siv rau qhov chaw uas yuav tsum tau ua haujlwm ntau zaus.