... Unique cushing bedding process 4. poles for VCB The embedded poles of the VYG units totally enclose the vacuum interrupter, CT& PT and both ... due to special conductive copper part. The embedded poles, in epoxy resin with unique materal, make features of aging resistance, ... VoltagekV12/242Rated CurrentA630,1250,2500,3150,40003Rated short circuit breaking currentkA20,25,31.5,404Rated short time ...