Residual Current Monitoring & Protection
Empowering electrical safety through advanced type – A/F/EV/B RCD technology integration
Type AC RCD is insufficient for electrical safety
With an increasing use of power electronics equipment, the traditional Type AC residual current devices can not provide sufficient protection against electrical shock and fire. Bituo offers advanced Type A / F / EV / B technologies that can be integrated into your products and systems, so as to make electricity safter with our customers and partners.
RDC Type | Fault current detected | Typical types of load |
Type AC |
|
Resistive, capacitive, inductive loads. Immersion heater, oven/hob with resistive heating elements, electric shower, tungsten/halogen lighting, etc. |
Type A |
|
Single-phase with electronic components Single phase inverters, class 1 IT & multimedia equipment, power supplies for class 2 equipment, appliances such as washing machines, lighting controls, induction hobs etc. * Type A is also suitable for Type AC applications |
Type F |
|
Frequency controlled single-phase equipment/appliances Appliances such as a washing machine that is frequency controlled, some class 1 power tools, some air conditioners using variable frequency speed drives * Type F is also suitable for Type AC and Type-A applications. |
Type EV |
|
AC EV charging AC EV charging where both Type A 30mA protection and DC fault current>6mA detection are requested by IEC 62752 and IEC 61851-1. * Type EV is also suitable for Type AC and Type A applications |
Type B |
|
Three phase electronic equipment Inverters for speed control, ups, mode-3 EV charging, Photo voltaic, Power Electronic Converter Systems, industrial machines, cranes * Type B is also suitable for Type AC, Type A Type F, and Type EV applications. Difference between Type EV and Type B can be found in this blog post. |
Our electronic solution for your
Freestanding RCDs
(Din-Rail RCBO/RCCB, CBR/mRCD, PRCD/GFCI etc.)
Built-in RCD
(IC-CPD, Wallbox, PV Inverter, etc.)
OEM Category | Type A | Type F | Type EV | Type B | |
Freestanding RCDs |
RCCB / RCBO | IC / Sensor Board | IC / Sensor Board | Sensor Board | Sensor Board |
RC-Units | IC / Sensor Board | IC / Sensor Board | Sensor Board | Sensor Board | |
RCM / mRCD | Sensor Board | Sensor Board | Sensor Board / ODM | Sensor Board / ODM | |
PRCD / GFCI* | Sensor Board | Sensor Board | – | – | |
Built-in RCDs |
EV Charger | – | – | Sensor | Sensor |
PV Inverter | – | – | – | Sensor | |
Variable frequency Drives | – | – | – | Sensor |
*We advocate the use of type A and F Portable RCD (PRCD) for home appliances with frequency control
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