The TB-RV 3M is a rechargeable dehumidifier / ventilation dryer especially designed for transformers. The adsorber has valves and FKM seals. It can be used indoor & outdoor. With a capacity of 1,00kg of GIEBEL Xdry®, it adsorbs up to 350ml of water until the color of the desiccant changes. Thanks to a 2μm filter, the sucked in air is also completely cleaned and an activated carbon layer adsorbs oil mist to protect the desiccant and the environment from contamination.