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Select Protection Devices

K M Thilakarathne

There are 2 devices in the market as a  RCD or  RCCB are installed for electrical circuit SELECT PROTECTION DIVICEs  for earth leakage protection  - what is the difference of its and what is most suitable for the human protection device 

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    For your purposes, RCD and RCCB are the same thing. Technically an RCD is anything which detects a residual current, while an RCCB is a combination of a detection device and a device which can switch off the current (circuit breaker) once detected. In practice anything in a domestic setting will be an RCCB - possibly incorporated with a device that detects overload or short circuits (an MCB) - which when combined, is referred to as an RCBO.

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    For your purposes, RCD and RCCB are the same thing. Technically an RCD is anything which detects a residual current, while an RCCB is a combination of a detection device and a device which can switch off the current (circuit breaker) once detected. In practice anything in a domestic setting will be an RCCB - possibly incorporated with a device that detects overload or short circuits (an MCB) - which when combined, is referred to as an RCBO.

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