Operating Voltage Range 180260V AC Per Phase Operating Frequency 48 Hz 62 Hz KVA Rating Max 18 KVA Max Operating Current 80 A 180V Cooling Air NaturalForced Max on State Voltage drop 25V Operating Ambient Temp 5C 50C Sensing Time 2 mS 4mS Operating Frequency 10 mS Max Signaling Time 20 mS Max Switching Time