The ZOVA 275 K 40 from Bourns is a Metal Oxide Varistor that is designed to improve the capability of standard ZOV high-energy varistors. It requires an AC voltage of 275 V, a DC voltage of 350 V, and a clamping voltage of 710 V. This stacked high-energy varistor provides a much higher maximum pulse current and absorption energy capability within the given area compared to standard single ZOV varistors. It is designed to offer secondary surge protection in an outdoor and service entrance environment. This RoHS complaint varistor is available in a through-hole package that measures 36.5 x 56 mm and is ideal for surge protection applications.