Littelfuse ESDR221A2 is a compact device designed to protect sensitive equipment from voltage surges and electrostatic discharge. With a load rating of 1 A steady state and 10 A inrush at 45°C, it ensures reliable operation. Featuring 0.25 in. male quick connect terminals for easy installation, it can handle input AC line frequencies of 50/60 Hz with a tolerance of ±20%. With a humidity rating of 95% relative non-condensing and an insulation resistance of ≥100, it guarantees high-performance in various environments. The encapsulated circuitry ensures durability, while the low power consumption of ≤2 VA ensures energy efficiency. It offers a reset time of ≤150 ms and a time delay tolerance of ≤±5%. The dielectric breakdown of ≥2000V between terminals and mounting surface provides superior protection. This device has a compact design and a low output voltage drop of 2.5 V @ 1 A, ensuring minimal power loss. With a life expectancy of 1 x 10⁶ electrical cycles and 1 x 10⁷ mechanical cycles, it guarantees long-lasting performance. The open state leakage current of 2.5 A @ 230 V AC ensures safe operation.