Littelfuse ECSH40AD is a versatile electronic trip unit designed for motor-driven appliances. It has a load rating of 10 A resistive @ 240 Volts, and can handle motors up to 1/4 hp @ 125 Volts and 1/2 hp @ 250 Volts. It features a 0.25 in. male quick connect terminals for easy installation. With an adjustable trip delay range of 0.150 - 7 s and a response time of ≤75 ms, it provides reliable over or undercurrent protection. The sensor type is toroid with through-hole wiring, offering accurate peak detection. Additionally, it has a wide input tolerance of -20 - 10% and operates at a frequency of 50/60 Hz.