Additional technical information: Fastening method: Screw fixing M4, 4 pieces in rectangle 81Ã230 mmFrequency: 50 Hz - 60 HzDevice protection: short-circuit and overload-proofLED display: LED (green) for output voltageRelative humidity: 5 % - 95 %, condensation not permittedRipple: Max. 20 mV rms/RMSExternal backup fuse: Max. 3à 4 A; Efficiency: 91 %; Input voltage (max.): 550 V AC; Input voltage range: 360 - 550 V; Inputs: 1.7 A; Max. output current: 46 A; Max. temperature: +60 °C; Min. input voltage: 360 V AC; Min. temperature: 0 °C; No. of outputs: 1 x; No. of phases (details): 3; Operating temperature (max.): +60 °C; Operating temperature (min.) (num): 0 °C; Output type (power supply units): Adjustable; Output voltage (details): 24 V DC; Output voltage (max.): 28 V DC; Output voltage (min.): 24 V DC; Output voltage (nominal): 28 V DC; Product size (height): 242 mm; Product size (length): 270 mm; Product size (width): 106 mm