Monitoring Relays 1-Phase Voltage selection Type DUA55 Detects if voltage is at the desired level ( 10% or 15%) Measures its own power supply Wide power supply range: 208 to 480 VAC (15%) Output: 5 A SPDT relay normally energized For mounting on DIN-rail in accordance with DIN/EN 50 022 17.5 mm DIN-rail housing (DIN 43880) LED indication for relay and power supply ON Product Description Ordering Key DUA 55 C M44 1-Phase relay for detection 208 to 480 VAC plus selec- Housing of incorrect mains voltage. tion of the different possible Function This unit allows to stop nominal voltages. For Type incorrect power supply volt- mounting on DIN-rail. Hous- Item number age when different from the ing 17.5 mm wide suitable Output desired one. both for back and front pan- Power supply Power supply range from el mounting. Type Selection Mounting Output Supply: 208 to 480 VAC DIN-rail SPDT DUA 55 C M44 Input Specifications Output Specifications Input Output SPDT relay, N.E. L, N Terminals A1, A2 Rated insulation voltage 250 VAC Measures its own supply Contact ratings (AgSnO2) Measuring range 177 to 550 VAC Resistive loads AC 1 5 A 250 VAC DC 12 5 A 24 VDC Small inductive loads AC 15 2.5 A 250 VAC DC 13 2.5 A 24 VDC 6 Supply Specifications Mechanical life 30 x 10 operations 5 Electrical life 10 operations Power supply Overvoltage cat. III (at 8 A, 250 V, cos = 1) Rated operational voltage (IEC 60664, IEC 60038) Operating frequency 7200 operations/h through terminals: A1, A2 208 to 480 VAC 15%, 45 to 65 Hz Dielectric strength Dielectric voltage 2 kVAC (rms) Rated operational power 6 VA 230 VAC, 50 Hz Rated impulse withstand volt. 4 kV (1.2/50 s) General Specifications Reaction time Environment Alarm ON delay < 100 ms Degree of protection IP 20 Alarm OFF delay < 300 ms Pollution degree 2 Operating temperature Accuracy (15 min warm-up time) Max. voltage, 50 Hz -20 to +60C, R.H. < 95% Temperature drift 1000 ppm/C Max. voltage, 60 Hz -20 to +50C, R.H. < 95% Repeatability 0.5% on full scale Storage temperature -30 to +80C, R.H. < 95% Indication for Housing Power supply ON LED, green Dimensions 17.5 x 81 x 67.2 mm Relay ON LED, yellow Material PA66 or Noryl Weight Approx. 80 g Specifications are subject to change without notice (08.60.10) 1DUA55 General Specifications (cont.) Mode of Operation Screw terminals DUA55 monitors its own Example Tightening torque Max. 0.5 Nm 1- phase power supply. The relay monitors that the acc. to IEC 60947 The relay operates when the power supply is the correct monitored voltage is within one for the required equip- Product standard EN 60255-6 the desired tolerance ( 10% ment. Approvals UL, CSA or 15%). CE Marking L.V. Directive 2006/95/EC EMC Directive 2004/108/EC EMC Immunity According to EN 60255-26 According to EN 61000-6-2 Emissions According to EN 60255-26 According to EN 61000-6-3 Range setting Select the proper nominal voltage level using DIP- switches as shown below. Voltage window ON: 15 % OFF: 10 % Measuring range SW2 SW3 SW4 208 VAC OFF OFF OFF 220 VAC OFF OFF ON 230 VAC OFF ON OFF 240 VAC OFF ON ON Operation Diagram Voltage window Set level Power supply Relay ON 2 Specifications are subject to change without notice (08.06.10)