Main range of productZelio Control product or component typeModular measurement and control relays relay typeVoltage control relay network number of phases1 phase supply circuit typeDC relay nameRM22UA relay monitored parametersOvervoltage or undervoltage detectionUndervoltage and overvoltage in window mode time delay typeAdjustable 0.1...30 s, +/- 10 % of the full scale value on crossing the threshold Tt switching capacity in VA2000 VA measurement range15...500 V voltage AC/DC 50/60 Hz Complementary reset time<= 1500 ms at maximum voltage maximum switching voltage250 V AC minimum switching current10 mA at 5 V DC maximum switching current8 A AC [Us] rated supply voltage24...240 V AC/DC, 50/60 Hz supply voltage limits20.4...264 V AC/DC power consumption in VA3.5 VA AC power consumption in W1.5 W DC supply voltage frequency40...70 Hz +/- 10 % resistance across terminals150 kOhm at E2-M terminals300 kOhm at E1-M terminals500 kOhm at E3-M terminals output contacts2 C/O nominal output current8 A hysteresis3 % fixed of full scale for window mode5...50 % adjustable of threshold setting for overvoltage or undervoltage detection run-up delay at power-up<= 600 ms measuring cycle100 ms measurement cycle as true rms value repeat accuracy+/- 0.5 % input and measurement circuit+/- 2 % time delay measurement error< 1 % over the whole range with voltage variation0.05 %/°C with temperature variation response time<= 500 ms overvoltage categoryIII conforming to IEC 60664-1 insulation resistance> 100 MOhm at 500 V DC conforming to IEC 60255-27 insulationBetween supply and measurement mounting positionAny position connections - terminalsScrew terminals 2 x 0.5...2 x 2.5 mm² - AWG 20...AWG 14, solid cable without cable endScrew terminals 2 x 0.2...2 x 1.5 mm² - AWG 24...AWG 16, flexible cable with cable endScrew terminals 1 x 0.5...1 x 3.3 mm² - AWG 20...AWG 12, solid cable without cable endScrew terminals 1 x 0.2...1 x 2.5 mm² - AWG 24...AWG 14, flexible cable with cable end tightening torque0.6...1 N.m conforming to IEC 60947-1 housing materialSelf-extinguishing plastic status LEDLED yellow for relay ONLED green for power ON mounting support35 mm DIN rail conforming to EN/IEC 60715 electrical durability100000 cycles mechanical durability10000000 cycles utilisation categoryAC-1 conforming to IEC 60947-4-1DC-1 conforming to IEC 60947-4-1AC-15 conforming to IEC 60947-5-1DC-13 conforming to IEC 60947-5-1 safety reliability dataMTTFd = 308.2 yearsB10d = 290000 contacts materialCadmium free width22.5 mm product weight0.11 kg Environment immunity to microbreaks10 ms electromagnetic compatibilityConducted and radiated emissions class B conforming to CISPR 22Immunity for residential, commercial and light-industrial environments conforming to EN/IEC 61000-6-1Electrostatic discharge 6 kV level 3 contact discharge conforming to IEC 61000-4-2Electrostatic discharge 8 kV level 3 air discharge conforming to IEC 61000-4-2Radiated radio-frequency electromagnetic field immunity test 10 V/m level 3 conforming to IEC 61000-4-3Electrical fast transient/burst immunity test 4 kV level 4 direct conforming to IEC 61000-4-4Electrical fast transient/burst immunity test 2 kV level 4 capacitive coupling conforming to IEC 61000-4-4Surge immunity test 4 kV level 4 common mode conforming to IEC 61000-4-5Surge immunity test 2 kV level 4 differential mode conforming to IEC 61000-4-5Conducted and radiated emissions class B group 1 conforming to CISPR 11Emission standard for industrial environments conforming to EN/IEC 61000-6-4Emission standard for residential, commercial and light-industrial environments conforming to EN/IEC 61000-6-3Immunity for industrial environments conforming to EN/IEC 61000-6-2 standardsEN/IEC 60255-1 product certificationsCCCCECSAGLULRCMEACChina RoHS ambient air temperature for storage-40...70 °C ambient air temperature for operation-20...50 °C at 60 Hz-20...60 °C at 50 Hz AC/DC relative humidity93...97 % at 25...55 °C conforming to IEC 60068-2-30 vibration resistance0.075 mm (f = 10...58.1 Hz) (not in operation) conforming to IEC 60068-2-61 gn (f = 10...58.1 Hz) (not in operation) conforming to IEC 60068-2-60.035 mm (f = 58.1...150 Hz) (in operation) conforming to IEC 60068-2-60.5 gn (f = 58.1...150 Hz) (in operation) conforming to IEC 60068-2-6 shock resistance15 gn for 11 ms (not in operation) conforming to IEC 60068-2-275 gn for 11 ms (in operation) conforming to IEC 60068-2-27 IP degree of protectionIP20 on terminals conforming to IEC 60529IP40 on housing conforming to IEC 60529IP50 on front panel conforming to IEC 60529 pollution degree3 conforming to IEC 60664-1 dielectric test voltage2.5 kV for 1 min AC 50 Hz conforming to IEC 60255-27 Offer Sustainability Sustainable offer statusGreen Premium product RoHS (date code: YYWW) REACh Product environmental profile Product end of life instructions
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Mounting and ClearanceMounting and ClearanceRail Mounting
Connections and SchemaVoltage Measurement Relay
A1,A2 : Supply voltage
E1,E2,E3,M : Voltages to be measured
11-14,12 : 1st C/O contact of output relay
21-24,22 : 2nd C/O contact of output relay
Technical DescriptionFunction DiagramsUndervoltage Control
Without memory ("No Memory" mode)
With memory ("Memory" mode)Overvoltage Control
Without memory ("No Memory" mode)
With memory ("Memory" mode)Legend
Tt Time delay after crossing of threshold
Un Nominal supply voltage
U Monitored supply voltage
U> Overvoltage threshold
U< Undervoltage threshold
11-12/11-14, 21-22/21-24 Output relay connections
Relay status: black color = energized.
NOTE: In "Memory" mode, the relay opens when crossing of the threshold is detected and then stays in that position. The power supply voltage must be switched off to reset the product.