Download the 10D330K datasheet PDF.
This datasheet also includes the 10D180L variant, as both parts are published together in a single manufacturer document.
METAL OXIDE VARISTORS
Transient voltage surge suppressors 10D Series Model Number Maximum Allowable
Voltage Standard High AC Surge (V) DC (V) Varistor Voltage
V 1m (V) Clamping Voltage (MAX.