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What Is An RCD

This web page defines the characteristics of an RCD.


The Characteristics Of An RCD

RCD stands for Residual Current Device.


The following characteristics define an RCD:

  • The physical size.

  • Maximum current rating.

  • The amount of leakage current that will trip the RCD (sensitivity).

  • Whether the RCD has a test button (test whether the RCD trips).

  • Break time – how long a fault persists for before the RCD trips.

  • Whether an RCD resets itself or stays 'tripped' after a fault.





Judge Electrical Limited
15 Mulberry Court, Huntington, York, YO32 9TU
Telephone 01904 764845 (Landline), 07919 033113 Mobile)
Email info@judgeelectrical.co.uk
VAT No. 852917405. Company Number 6359328