Product Model
RM4TU01
Selling Points
- 1Advanced Phase Sequence Detection: Monitors phase sequence to ensure reliable operation in three-phase supply systems.
- 2Undervoltage Detection: Automatically detects undervoltage conditions to prevent system failures.
- 3High Accuracy Time Delay: Offers a setting accuracy of time delay up to 10 P with minimal drift.
- 4Robust Construction: Designed with 90/10 silver nickel contacts for high durability and resistance to electromagnetic interference.
- 5Compliant with International Standards: Meets IEC 60664-1 and IEC 60947-5-1 standards for safety and performance.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
| Parameter | Value | Parameter | Value |
|---|---|---|---|
Range of Product | Harmony Relay | Relay Type | Control relay |
Product or Component Type | Industrial measurement and control relays | Product Specific Application | For 3-phase supply |
Relay name | RM4-T | Relay monitored parameters | Phase sequence<br />Phase failure detection<br />Undervoltage detection |
time delay | Without | Contacts type and composition | 2 C/O |
Poles description | 3P | Maximum switching voltage | 440 V AC |
Control threshold undervoltage | 160…220 V | Output contacts | 2 C/O |
Setting accuracy of the switching threshold | +/-3 % | Switching threshold drift | <= 0.06 % per degree centigrade depending permissible ambient air temperature<br /><= 0.5 % within the measuring range |
Setting accuracy of time delay | 10 P | Time delay drift | <= 0.07 % per degree centigrade depending on the rated operational temperature<br /><= 0.5 % within the measuring range |
Hysteresis | 5 % fixed de-energisation threshold | delay at power up | 650 ms |
Maximum measuring cycle | 80 ms | marking | CE |
Overvoltage category | III IEC 60664-1 | [Ui] rated insulation voltage | 500 V IEC |
Supply frequency | 50/60 Hz +/- 5 % | Operating position | Any position without derating |
Connections - terminals | Screw terminals, 2 x 1.5 mm²flexible with cable end<br />Screw terminals, 2 x 2.5 mm²flexible without cable end | Tightening torque | 5.3…9.7 lbf.in (0.6…1.1 N.m) |
Mechanical durability | 30000000 cycles | [Ith] conventional free air thermal current | 8 A |
[Ie] rated operational current | 2 A 158 °F (70 °C) 24 V DC-13 IEC 60947-5-1/1991<br />2 A 158 °F (70 °C) 24 V DC-13 VDE 0660<br />3 A 158 °F (70 °C) 115 V AC-15 IEC 60947-5-1/1991<br />3 A 158 °F (70 °C) 115 V AC-15 VDE 0660<br />3 A 158 °F (70 °C) 24 V AC-15 IEC 60947-5-1/1991<br />3 A 158 °F (70 °C) 24 V AC-15 VDE 0660<br />3 A 158 °F (70 °C) 250 V AC-15 IEC 60947-5-1/1991<br />3 A 158 °F (70 °C) 250 V AC-15 VDE 0660<br />0.1 A 158 °F (70 °C) 250 V DC-13 IEC 60947-5-1/1991<br />0.1 A 158 °F (70 °C) 250 V DC-13 VDE 0660<br />0.3 A 158 °F (70 °C) 115 V DC-13 IEC 60947-5-1/1991<br />0.3 A 158 °F (70 °C) 115 V DC-13 VDE 0660 | Switching capacity in mA | 10 mA 12 V |
Switching voltage | 250 V AC | Contacts material | 90/10 silver nickel contacts |
Number of cables | 2 | Height | 3.07 in (78 mm) |
Width | 0.9 in (22.5 mm) | Depth | 3.1 in (80 mm) |
Terminals description ISO n°1 | ALT<br />(L1-L2-L3)CO<br />(25-26-28)OC<br />(15-16-18)OC | Output relay state | Tripped, fault present |
9 mm pitches | 2.5 | Net Weight | 0.24 lb(US) (0.11 kg) |
Terminals description ISO n°2 | (21-22-24)OC<br />(11-12-14)OC<br />(L1-L2-L3)CO<br />ALT | Electromagnetic compatibility | 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 />Resistance to electrostatic discharge - test level: 6 kV (contact) conforming to IEC 61000-4-2 level 3<br />Resistance to electrostatic discharge - test level: 8 kV (air) conforming to IEC 61000-4-2 level 3 |
Standards | EN/IEC 60255-6 | Product Certifications | GL<br />UL<br />CSA |
Directives | 73/23/EEC - low voltage directive<br />89/336/EEC - electromagnetic compatibility | Ambient Air Temperature for Storage | -40…185 °F (-40…85 °C) |
Ambient air temperature for operation | -4…149 °F (-20…65 °C) | Relative humidity | 15…85 % 3K3 IEC 60721-3-3 |
Vibration resistance | 0.35 ms 10…55 Hz)IEC 60068-2-6 | Shock resistance | 15 gn 11 ms IEC 60068-2-27 |
IP degree of protection | IP20 IEC 60529 terminals)<br />IP50 IEC 60529 casing) | Pollution degree | 3 IEC 60664-1 |
Dielectric test voltage | 2.5 kV | Non-dissipating shock wave | 4.8 kV |
Resistance to electrostatic discharge | 6 kV contact IEC 61000-4-2 level 3<br />8 kV air IEC 61000-4-2 level 3 | Resistance to electromagnetic fields | 9.1 V/m (10 V/m) IEC 61000-4-3 level 3 |
Resistance to fast transients | 2 kV IEC 61000-4-4 level 3 | Disturbance radiated/conducted | CISPR 11 group 1 - class A<br />CISPR 22 - class A |
Specifications may be subject to change without notice