Residual-current device is a generic term covering both RCCBs and RCBOs.
Read more about Residual-current Device: Purpose and Operation, Typical Features, Form Factors, Combined With Overcurrent Devices, Testing, Limitations, History and Nomenclature, Regulation and Adoption
Famous quotes containing the word device:
“It is my hope to be able to prove that television is the greatest step forward we have yet made in the preservation of humanity. It will make of this Earth the paradise we have all envisioned, but have never seen.”
—Joseph O’Donnell. Clifford Sanforth. Professor James Houghland, Murder by Television, just before he demonstrates his new television device (1935)