Operating Voltage Range 180-260V AC Per Phase Operating Frequency 48 Hz 62 Hz KVA Rating (Max) 3.6 KVA Max. Operating Current 17 A (@180V) Cooling Air (Natural/Forced) Max. on State Voltage drop 2.5V Operating Ambient Temp. 5*C 50*C Sensing Time 2 mS 4mS Operating Frequenc10 mS Max Signaling Time 20 mS Max. Switching Time