TrueData-LOAD are cascadable electronical DC load modules. Depending on the power and performance requirements, they are grouped cascaded to complete units with maximum 1,200A or 150kW. An interface is used to control each group of modules. The communication between all installed modules is achieved using an internal control-bus (master-slave architecture). electronic load modules are designed to allow full current operation at very low input voltages. Especially for single fuel cell testing for the compensation of voltage drops between the test item and cable sockets various zero-voltage-options are available. TrueData-LOAD is designed with a standard digital interface to operate within the Evaluator test station series using our FuelWork software. It can also be operated as a stand alone device or within custom-build equipment, provided the interface is compatible. The applicable command structure follows the SCPI-standard.