Operating Voltage Range 200260V AC Per Phase Operating Frequency 48 Hz 62 Hz KVA Rating Max 60 KVA 20 KVA Per Phase Max Operating Current 85 A 180V Per Phase Cooling Air NaturalForced Max on State Voltage drop 25V Per Phase Operating Ambient Temp 5C 50C Sensing Time 2 mS 4mS Operating Frequency 10 mS Max Signaling Time 20 mS Max Switching Time