The One Module Add-on Block provides three-phase earth leakage protection and reduces installation time and the panelboard size, thus combining the essential elements of modular design and functionality.
The One Module Add-On Block (RCCB) and MCB combination only requires four poles and provides the protective characteristics of both the devices, thereby protecting the entire circuit and removing the need to wire between DIN-mounted RCD and MCB. This results in a significant reduction of time, labour and the size and cost of the socket outlet (no RCD module).