Littelfuse ECSW4LADT is a versatile surge protection device with a high output load rating. It features a 10A resistive load rating at 240V, 1/4 hp at 125V, and 1/2 hp at 250V. The product is equipped with 0.197 in. terminal blocks for easy wire termination. It operates on a frequency of 50/60 Hz with input tolerance ranging from -20% to 10%. The device offers surge protection according to IEEE C62.41-1991 Level A standards and has a fast response time of ≤75ms. The current sensor range is steady at 50A turns and 300A turns for inrush currents. The sensor type is a toroid, with through hole wiring capability for up to #4 AWG wire. The sensor frequency can be adjusted to 45/500 Hz and supports over and undercurrent trip points. The trip point range is 0.5-5 and the trip delay sensing on startup is fixed at 0.1-6s. The undercurrent trip point is typically lower than 250 mA turns. Overall, the Littelfuse ECSW4LADT provides reliable surge protection and accurate current sensing for various applications.