Compact equipment, which can be installed next to silos and warehouses. High performance and low energy consumption. Anticorrosive treatment of all the parts subject to oxidation. Polymerized polyester powder painting in an oven at 230°C, ensuring greater durability and better finishing. Bipolar switch in the single-phase models and three-pole in the three-phase models, which allows total insulation regardless of the position of the plug in the socket. It can be acquired with or without motor.