Littelfuse KRDS421 is a compact, encapsulated time delay relay with a 10 A resistive load rating at 125 V ac and 5 A at both 230 V ac and 28 V dc. It features 0.25 in. (6.35 mm) male quick connect terminals for easy installation. With a power consumption of ≤2 VA and a reset time of ≤150 ms, this reliable relay ensures precise performance. Its microcontroller-based circuitry with watchdog circuitry provides a time delay tolerance of ≤±5%. With a life of 1 x 10⁵ electrical operations and 1 x 10⁷ mechanical operations, this time delay relay offers long-lasting durability.