RM22UA21MR
Product ID:33435
Updated: 2026/4/3
Key Features
- 1Detect voltage variations with high precision for reliable operation. 2、Construct with robust materials for durability in harsh environments. 3、Mount on DIN rails easily to simplify installation and save space. 4、Handle up to 8A at 250V AC for demanding industrial applications. 5、Monitor a wide voltage range from 0.05 to 5V for system versatility.
Technical Specifications
Detailed engineering parameters
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Range of Product | Harmony Control Relays | Relay Type | Voltage control relay |
| Product or Component Type | Voltage control relay | Phase | 1 phase |
| Supply circuit type | DC | Relay name | RM22UA |
| Relay monitored parameters | Overvoltage detection | time delay | Without |
| Switching capacity in VA | 2000 VA | Measurement range | 0.05...5 V AC/DC |
| Contacts type and composition | 2 C/O | Reset time | 1500 ms at maximum voltage |
| Maximum switching voltage | 250 V AC | Minimum switching current | 10 mA 5 V DC |
| Maximum switching current | 8 A AC | Supply voltage limits | 20.4…264 V AC/DC |
| Power consumption in VA | 3.5 VA AC | Maximum power consumption in W | 1.5 W DC |
| Immunity to microbreaks | 10 ms | Resistance across terminals | 30 kOhm E2-M terminals<br />5 kOhm E1-M terminals<br />50 kOhm E3-M terminals |
| Output contacts | 2 C/O | Hysteresis | 5…50 % adjustable threshold setting |
| delay at power up | 600 ms | Maximum measuring cycle | 100 ms measurement cycle as true rms value |
| Repeat accuracy | +/- 0.5 % input and measurement circuit | Measurement error | < 1 % over the whole range with voltage variation<br />0.05 %/°C with temperature variation |
| Response time | <= 500 ms | Insulation resistance | > 100 MOhm 500 V DC |
| Overvoltage category | III IEC 60664-1 | Insulation | Between supply and measurement |
| Connections - terminals | Screw terminals, 2 x 0.5...2 x 2.5 mm² AWG 20...AWG 14) solid without cable end<br />Screw terminals, 2 x 0.2...2 x 1.5 mm² AWG 24...AWG 16) flexible with cable end<br />Screw terminals, 1 x 0.5...1 x 3.3 mm² AWG 20...AWG 12) solid without cable end<br />Screw terminals, 1 x 0.2...1 x 2.5 mm² AWG 24...AWG 14) flexible with cable end | Tightening torque | 5.3…8.9 lbf.in (0.6…1 N.m) IEC 60947-1 |
| Housing material | Self-extinguishing plastic | Mounting support | 35 mm DIN rail conforming to IEC 60715 |
| Electrical durability | 100000 cycles | Mechanical durability | 10000000 cycles |
| Utilisation category | AC-15 IEC 60947-5-1<br />DC-13 IEC 60947-5-1<br />AC-1 IEC 60947-4-1<br />DC-1 IEC 60947-4-1 | [Un] rated nominal voltage | 24...240 V AC/DC 50/60 Hz, non self-powered |
| Safety reliability data | B10d = 290000<br />MTTFd = 308.2 years | Contacts material | Cadmium free |
| Control Type | With test button | Width | 0.9 in (22.5 mm) |
| Net Weight | 0.24 lb(US) (0.11 kg) | Electromagnetic compatibility | Immunity for residential, commercial and light-industrial environments conforming to IEC 61000-6-1<br />Immunity for industrial environments conforming to IEC 61000-6-2<br />Emission standard for residential, commercial and light-industrial environments conforming to IEC 61000-6-3<br />Emission standard for industrial environments conforming to IEC 61000-6-4<br />Electrostatic discharge - test level: 6 kV level 3 (contact discharge) conforming to IEC 61000-4-2<br />Electrostatic discharge - test level: 8 kV level 3 (air discharge) conforming to IEC 61000-4-2<br />Radiated radio-frequency electromagnetic field immunity test - test level: 10 V/m level 3 conforming to IEC 61000-4-3<br />Electrical fast transient/burst immunity test - test level: 4 kV level 4 (direct) conforming to IEC 61000-4-4<br />Electrical fast transient/burst immunity test - test level: 2 kV level 4 (capacitive coupling) conforming to IEC 61000-4-4<br />Surge immunity test - test level: 4 kV level 4 (common mode) conforming to IEC 61000-4-5<br />Surge immunity test - test level: 2 kV level 4 (differential mode) conforming to IEC 61000-4-5<br />Conducted and radiated emissions class B group 1 conforming to CISPR 11<br />Conducted and radiated emissions class B conforming to CISPR 22 |
| Ambient air temperature for operation | -4…122 °F (-20…50 °C) 60 Hz<br /> -4…140 °F (-20…60 °C) 50 Hz | Standards | IEC 60255-1 |
| Product Certifications | UL<br />EAC<br />CSA<br />GL<br />CCC<br />RCM<br />CE | Ambient Air Temperature for Storage | -40…158 °F (-40…70 °C) |
| Relative humidity | 93…97 % 77…131 °F (25…55 °C) IEC 60068-2-30 | Vibration resistance | 0.075 mm 10…58.1 Hz) not in operation IEC 60068-2-6<br />1 gn 10…58.1 Hz) not in operation IEC 60068-2-6<br />0.035 mm 58.1…150 Hz) in operation IEC 60068-2-6<br />0.5 gn 58.1…150 Hz) in operation IEC 60068-2-6 |
| Shock resistance | 15 gn 11 ms) not in operation IEC 60068-2-27<br />5 gn 11 ms) in operation IEC 60068-2-27 | IP degree of protection | IP20 IEC 60529 terminals)<br />IP40 IEC 60529 housing)<br />IP50 IEC 60529 front panel) |
| Pollution degree | 3 IEC 60664-1 | Dielectric test voltage | 2.5 kV AC 50 Hz, 1 min IEC 60255-27 |
Specifications may be subject to change without notice