DIN VDE 0664-401:2012
B型由残余电流控制的断路器,带整合式过电流保护,适用于残余交替和残余直流电流进行高级防火防护.第401部分:RCBO 类型 B+
Residual current operated circuit-breakers type B with integral overcurrent protection to operate at residual alternating and residual direct currents for advanced preventative protection against fire - Part 401: RCBO Type B+