Littelfuse ECSH40AC is a robust and flexible electronic current sensor. It has a load rating of 10A resistive at 240 volts and can handle 1/4 hp at 125 volts or 1/2 hp at 250 volts. It features 0.25 in. male quick connect terminals and supports 50/60Hz input frequency. With trip delay ranging from 0.150 to 7 seconds and response time of ≤75ms, it ensures efficient and accurate current sensing. The sensor offers peak detection and its toroid design allows for easy through-hole wiring. It has a wide range of current sensing capabilities, from steady-state up to 50A turns and inrush up to 300A turns for 10 seconds. The trip point can be adjusted from 0.5 to 5 while maintaining a trip delay temperature tolerance of ±15%. With a trip point hysteresis of ±5% and guaranteed sensor tolerance, it provides reliable and consistent performance. The trip delay sensing on startup can be factory fixed at 0-6 seconds with a ±40% allowance. With a compact design and multiple adjustable settings, the ECSH40AC is perfect for various applications requiring precise current sensing.