The 751KD20-P10 is an AC compensated disc-type varistor manufactured by Yageo. It features a 615V-1240V voltage rating and 6.5KA maximum current rating. The varistor is made of a ceramic body with metal film electrodes and encapsulated in a flame-retardant UL 94V-0 rated plastic case, which is RoHS compliant. It is suitable for circuit protection applications and has an operating temperature range of -55°C to 85°C. The device has an 8mm mounting hole for easy installation and has a peak pulse power of 40kW (10/1000 µs pulse).