The Panasonic ERZ-V09D431CS Varistor is a three-terminal, surface-mount mounting, through-hole mounting unit which uses ceramics as its insulating material. It has a rated voltage of 275VAC and 350VDC and can handle up to a peak voltage of 430V. It has a rated current of 3.5kA. This varistor is used in applications where overvoltage needs to be monitored and prevented. It is ideal for lighting circuits, power supplies and digital appliances.