Traditional MCPs have electro-mechanical trip mechanisms that provide a trip point that is set based on a multiple of the motor Full Load Amperage (FLA). This trip point is set to avoid tripping due to in-rush currents, but also must meet National Electric Code® (NEC) requirements declared in Table 430.52. This table outlines the Maximum Rating or Setting of Motor Branch-Circuit Protective Devices, allowing standard motors a maximum setting of 800% of full load current and energy-efficient motors a maximum setting of 1100% of full load current for an MCP. The in-rush current of an electrical motor is illustrated in Fig. 2 with a 0.5hp motor that has a full load current of 2A and an NEC maximum instantaneous trip setting of 16A. The initial spike of in-rush current reaches 18A and would exceed the NEC maximum setting of 16A. Although the spike is only for one electrical cycle and less than 16 milliseconds, this peak current creates many problems for properly setting traditional motor circuit protectors.