Littelfuse ESDR421A1 is an encapsulated device with a steady state output load rating of 1A and 10A inrush at 45°C. It features 0.25 in. male quick connect terminals, input AC line frequency of 50/60 Hz, and input tolerance of ±20%. With a humidity resistance level of 95%, it offers repeat accuracy of ±0.1% or 20ms, insulation resistance of ≥100, and setpoint vs ambient temperature and operating voltage within ≤±2% range. Power consumption is ≤2VA, time delay tolerance is ≤±5%, and reset time is ≤150ms. The device guarantees dielectric breakdown of ≥2000V between terminals and mounting surface, and has an output voltage drop of 2.5V @ 1A. Electrical life is rated at 1 x 10⁶ while mechanical life is rated at 1 x 10⁷. The open state leakage current is 2.5A @ 230V AC.