The B series products in this category are suitable for fixed installation of power devices with AC rated voltage of 450/750V and below; The R series products are suitable for household appliances with AC rated voltage of 300/500V and below, small electric tools, instruments, meters, and power lighting with copper core PVC insulated connection flexible cables (wires).
Production execution standards:
GB5023.1～7-1997
JB8734.1-5-1998 is equivalent to IEC227.