Types of Residual Current Devices (RCD)

Disassembled residual current device RCD; I=40A, ΔI=30mA For domestic applications only the first five of the below listed residual current devices (RCD) need to be considered. For industrial and commercial buildings all of the classifications need to be considered.Table below aims to identify where each type of RCD can be used, together with the benefits provided. However, before looking at Table 2 there are two other classifications of RCD that need to be considered – general and time-delayed operation each having Type a.c., A or B characteristics. RCCB(Residual Current Operated Circuit Breaker without Integral Overcurrent Protection)A mechanical switching device designed to make,

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