Type 'B' RCCBs AC-DC sensitive
'B' type RCCBs, in addition to normal AC, can detect high frequency AC and pure DC earth leakage currents.
Reducing the risk of fire and/or electrocution through automatic disconnection of the electrical supply relies on the selection of the correct type of RCCB.
View 'B' Type

  Type 'B' RCCB
 Selection Guide
    Applications requiring 'B' types include:
             EV & PV installations
             Frequency converters
             UPS installations
             High-frequency power converters
             Building site power supply cabinets                     
View Technical Data for all RCCBs

'B' Type RCCBs are extremely complex
in Design and Manufacture as
demonstrated by this rotating image.