Littelfuse KSD2221 is a compact and reliable thermal protector. It can handle a steady state output load of 1A and 10A inrush at 60°C. The termination type is 0.25 in. (6.35 mm) male quick connect terminals. It operates at an AC line frequency of 50/60 Hz with a ±20% input tolerance. With an encapsulated circuitry, it offers a repeat accuracy of ±0.5% or 20ms. It has a power consumption of ≤2 VA and a time delay tolerance of ≤±5%. The reset time is ≤150ms. With a dielectric breakdown of ≥2000V and an insulation resistance of ≥100, it ensures efficient and safe operation. The setpoint vs ambient temperature and operating voltage is ≤±10%. It has an output voltage drop of ≅2.5V @ 1A and an open-state leakage current of ≅5 @230V AC. This thermal protector is suitable for various applications and environments.