In this paper, the results of experimental tests performed on a Helical Wire Rope Isolator (HWRI) are presented in order to describe the dynamic and static behavior of the selected metal device in three different displacements ranges, namely small, relatively large, and large displacements ranges, without and under the effect of a vertical load. A testing machine, allowing to apply horizontal displacement or load histories to the tested bearing with a constant vertical load, has been adopted to perform the dynamic and static tests. According to the experimental results, the dynamic behavior of the tested device depends on the applied displacement amplitude. Indeed, the HWRI displays a softening and a hardening stiffness at small and relatively large displacements, respectively, and a stronger nonlinear stiffening behavior at large displacements. Furthermore, the experimental tests reveal that the application of a vertical load allows to have a more flexible device with higher damping properties and that the applied vertical load affects much less the dynamic response of the metal device at large displacements. Finally, a decrease in the static to dynamic effective stiffness ratio with increasing displacement amplitude has been observed., {"references":["M. L. Tinker and M. A. Cutchins, \"Damping phenomena in a wire rope\nvibration isolation system,\" Journal of Sound and Vibration, vol. 157,\nno. 1, pp. 7-18, 1992.","G. F. Demetriades, M. C. Constantinou and A. M. Reinhorn, \"Study of\nwire rope systems for seismic protection of equipment in buildings,\"\nEngineering Structures, vol. 15, no. 5, pp. 321-334, 1993.","G. Serino, F. Bettinali and G. Bonacina, \"Seismic base isolation of gas\ninsulated electrical substations: comparison among different solutions,\"\nProceedings of the 4th US Conference on Lifeline Earthquake\nEngineering, San Francisco, California, 1995.","G. Serino, G. Bonacina and F. Bettinali, \"Passive protection devices for\nhigh-voltage equipment: design procedures and performance\nevaluation,\" Proceedings of the 4th US Conference on Lifeline\nEarthquake Engineering, San Francisco, California, 1995.","M. Di Donna and G. Serino, \"Base isolation of high-voltage equipment:\ncomparison between two different solutions,\" Proceedings of the 7th\nInternational Conference on Probabilistic Methods Applied to Power\nSystems, Napoli, Italy, 2002.","S. Alessandri, R. Giannini, F. Paolacci and M. Malena, \"Seismic\nretrofitting of an HV circuit breaker using base isolation with wire ropes.\nPart 1: Preliminary tests and analyses,\" Engineering Structures, vol. 98,\npp. 251-262, 2015.","G. De Canio, \"Marble devices for the base isolation of the two bronzes\nof Riace: a proposal for the David of Michelangelo,\" Proceedings of the\n15th Word Conference on Earthquake Engineering, Lisbon, Portugal,\n2012.","S. Alessandri, R. Giannini, F. Paolacci, M. Amoretti and A. Freddo,\n\"Seismic retrofitting of an HV circuit breaker using base isolation with\nwire ropes. Part 2: Shaking-table test validation,\" Engineering\nStructures, vol. 98, pp. 263-274, 2015.","S. Pagano, M. Russo, S. Strano and M. Terzo, \"A mixed approach for\nthe control of a testing equipment employed for earthquake isolation\nsystems,\" Journal of Mechanical Engineering Science, vol. 228, no. 2,\npp. 246-261, 2014. [10] A. K. Chopra, Dynamics of Structures: Theory and Applications to\nEarthquake Engineering, 4th ed. Englewood Cliffs, NJ: Prentice Hall,\n2012."]}