The MOV-20D621K from Bourns is a Varistor with AC Voltage Rating 385 to 505 V, DC Voltage Rating 558 to 682 V, Clamping Voltage 1025 V, Capacitance 780 pF, Temperature Operating Range -40 to 105 ºC. Tags: Through Hole. More details for MOV-20D621K can be seen below.