The ZOVS 420 K 40 from Bourns is a Varistor with AC Voltage Rating 420 V, DC Voltage Rating 560 V, Clamping Voltage 1120 V, Capacitance 2280 pF, Temperature Operating Range -40 to 85 ºC. Tags: Through Hole. More details for ZOVS 420 K 40 can be seen below.