The 271KD10 is a radial-leaded varistor manufactured by Liown. It is rated at 455V, 0.4W, 37J, 225V, 370pF at 1kHz, 175V, 270V, and 2.5kA. It is RoHS compliant, meaning it is free of hazardous materials and designed to reduce electrical and environmental hazards. This varistor can be used to protect equipment from transient voltage spikes, and is suitable for use in many different situations.