Littelfuse ORB24A21D is a versatile time delay relay ideal for various applications. With a load rating of 10 A resistive at 120/240 V ac and 28 V dc, and a termination type of 0.25 in. male quick connect terminals, it offers reliable performance. It operates at an input AC line frequency of 50/60 Hz, with a tolerance of -15% to 20%. The repeat accuracy is ±2% or 20 ms, whichever is greater. It has a setpoint vs ambient temperature and operating voltage tolerance of ≤±10%. Consuming only 2.25 W, it ensures energy efficiency. The time delay tolerance is within a guaranteed range, and the reset time is ≤50 ms. Featuring an analog time delay type, it has a long electrical and mechanical life of 1 x 10⁵ and 1 x 10⁷ respectively. With an initiate time of ≤70 ms, this time delay relay delivers reliable and precise performance.