The MT40 Grounding System is designed to prevent the accumulation of electrostatic charges which may generate during the loading/unloading of tank trucks, rail tankers, IBCs, and Drums for nonconductive liquids, powders and granulates, or during filling and emptying operations of Flexible Intermediate Bulk Containers (FIBC, ‘Big Bags’). Moreover, MT40 is able to detect whether it is connected to the tank or to some different metal object thus preventing possible mistakes or misuses by the operator. The multicolor LED display clearly shows the operating status and if for whichever reason the connection is interrupted the system is stopped.