Abstract: The electrical connecting apparatus tests for electrical faults in an electrical and/or electronic device having a circuit board, wire support or the like equipped with a plurality of blade-terminal strips and/or sleeve-terminal strips has at least one supporting device which has test contacts for testing the blades or sleeves of the blade-terminal strips and/or sleeve-terminal strips of the device being tested and restoring springs which may include a plurality of coil springs. The electrical contact between the socket and/or terminal strip of the device being tested and the test contacts is made by at least partially overcoming the spring forces of the restoring springs.