Littelfuse ECSW4MACT is a compact, high-performance electronic current sensor with various features. It has a load rating of 10A resistive at 240V, and it can handle motor loads of up to 1/4 hp at 125V and 1/2 hp at 250V. The sensor uses toroid and through-hole wiring for up to #4 AWG wire, and it operates at a frequency of 45/500 Hz. It offers over and undercurrent trip points, adjustable trip point range from 2-20, and a fixed trip delay of 0.1-6s. It also provides surge protection according to IEEE C62.41-1991 standards and a quick response time of ≤75ms. The product is suitable for applications where precise current monitoring and protection are needed.