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Selection Of Types Of RCD

RCD's exist in various different forms and react differently depending on the presence of DC components or different frequencies.

The following RCD's are available with the respective symbols and the designer or installer is required to select the appropriate device for the specific application.

RCD Types

  • Type AC - General purpose use, RCD can detect & respond to AC sinusoidal wave only.
 
  • Type A - Equipment incorporating electronic components RCD can detect & respond as for type AC, PLUS pulsating DC components.
 
  • Type F - Equipment with frequency controlled speed drives RCD can detect & respons as for type A, PLUS high frequency residual current.
 
  • Type B - Electric vehicle chargers, PV supplies.

    RCD can detect & respond for type F, PLUS smooth DC residual current.
 

RCD's & Their Loads

 
 
RCD
Types of Load
Type AC
Resistive, capacitive, inductive loads
Immersion heater, oven / hob with resistive heating elements, electric shower, tungsten / halogen lighting
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 & EV charging
Type F
Frequency controlled equipment
Appliances containing synchronous motors, some class 1 power tools, some air conditioning controllers using variable frequency speed drives
Type B
Three phase electronic equipment
Inverters for speed control, ups, EV charging where DC fault current is >6mA, PV

Available Products

RCBO Product List

Cat ref.
Description
RCBO Electronic 1P 6kA B Curve - 6A, 30mA Type A(AC & Pulsating DC Sensitive)1M
RCBO Electronic 1P 6kA B Curve -10A, 30mA Type A(AC & Pulsating DC Sensitive)1M
RCBO Electronic 1P 6kA B Curve -16A, 30mA Type A(AC & Pulsating DC Sensitive)1M
RCBO Electronic 1P 6kA B Curve -20A, 30mA Type A(AC & Pulsating DC Sensitive)1M
RCBO Electronic 1P 6kA B Curve -25A, 30mA Type A(AC & Pulsating DC Sensitive)1M
RCBO Electronic 1P 6kA B Curve -32A, 30mA Type A(AC & Pulsating DC Sensitive)1M

RCCB Product List

Cat ref.
Description
RCCB 2P 25A 30mA A Class
RCCB 2P 40A 30mA A Class
RCCB 2P 63A 30mA A Class
RCCB 4P 25A 30mA A Class
RCCB 4P 40A 30mA A Class
RCCB 4P 63A 30mA A Class

Types of RCDs