Electrical controlling devices; Electrical integrated control systems for use in the field of gravimetric and volumetric feeders, gravimetric and volumetric blenders, gravimetric and volumetric loaders, software-controlled industrial extruder machines, and production line control systems; Electrical plug device enabling connection and disconnection of power and/or control cables; Power supplies; Power supplies for gravimetric and volumetric feeders, gravimetric and volumetric blenders, gravim...