Micro electro-mechanical switch (MEMS) based over current motor protection system

摘要

An over current protection system (10) includes a current sensing member (20) configured and disposed to output an electrical rate of change signal that is indicative of a rate of change of an electrical current being in excess of a predetermined value, at least one micro electro-mechanical switch (MEMS) device (30) operatively connected to the current sensing member (20), and a controller (40) electrically coupled to each of the current sensing member (20) and the at least one MEMS device (30). The controller (40) is configured and disposed to open the at least one MEMS device (30) in response the electrical rate of change signal.