Amperage Range:0 to 200 A AC.Maximum Switch Rating:For fixed set point models: 0.3 A @ 135 VAC/DC; For adjustable set point models: 1 A @ 240 VAC.Output:Normally open, NPN.Power Requirements:None, self-powered.Temperature Limits:-22 to 158ºF (-30 to 70ºC).Humidity Limits:0 to 95% (non-condensing).Isolation Voltage:2000 V.Frequency:40 to 400 Hz.Enclosure Rating:UL, 94 V-O flammability rated, ABS plastic housing.Approvals:CE, cUL, UL.