Littelfuse KRPSD21B is an encapsulated, compact solid-state relay designed for a variety of applications. With a load rating of 10 A resistive at 125 V AC, 5 A resistive at 230 V AC and 28 V DC, and 1/4 hp at 125 V AC, it provides reliable switching performance. The termination type is a 0.25 in. (6.35 mm) male quick connect terminal, making installation easy. With an input tolerance of -15% to 20%, it offers flexibility in voltage fluctuations. The repeat accuracy is ±0.5% or 20 ms, ensuring precise control. It has a low power consumption of ≤2 W and a reset time of ≤150 ms. Designed for durability, it has an electrical life of 1 x 10⁵ and a mechanical life of 1 x 10⁷. With a switching voltage maximum of 250 V, it can handle diverse load requirements. It is also protected against reverse polarity for DC units.