The dual alternating modular relays are important allies of submersible electric pumps installed in sanitation or hydropressing plants.
As they are modular, their installation is simple and can be used in standard electrical box boxes or modular boxes on the DIN rail.
The model used for installation in a sanitation plant (RAL 202 SAM) is different from that for a hydropower plant (RAL 202 HIM). Also for each of these two models there is the variation for single-phase voltage and for three-phase voltage.
These devices also include the box of 2 modules and the fact that the various timings can be adjusted by Micro Switch, which gives high flexibility and resource saving.
The dual alternating modular relays control and protect the electric pumps (two) allowing alternating operation, acting in situations of minimum level, maximum level, backup pump input reinforcement and depending on model, maximum alarm (RAL 202 HIM) or minimum alarm. (RAL 202 HIM).
In the video below, it is possible to observe the operation of the RAL 202 SAM (Switching Relay for Sanitation Plants) in the various predicted situations.
All applications, detailed operation and data sheet, are presented here. Both are available for sale in the online store, starting at € 46.40.
