Product Model
RM4JA31F
Selling Points
- 1Accurate Current Monitoring: Detects currents from 0.3mA to 1A with high sensitivity.
- 2DPDT Configuration: Dual-pole double-throw (DPDT) contact configuration for versatile use.
- 3Adjustable Time Delay: Set time delays from 0.05 to 30 seconds for precise control.
- 4Over/Undercurrent Detection: Monitors both overcurrent and undercurrent conditions.
- 5Durable Construction: Designed for 30 million operating cycles with robust mechanical durability.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
| Parameter | Value | Parameter | Value |
|---|---|---|---|
Range of Product | Harmony Relay | Relay Type | Current measurement relay |
Product or Component Type | Industrial measurement and control relays | Relay name | RM4J |
Relay monitored parameters | Overcurrent or undercurrent detection | time delay | Adjustable 0.05...30 s |
Maximum power consumption in VA | 3.3 VA AC | Measurement range | 0.3...30 mA current AC 50/60 Hz<br />0.3...30 mA current DC<br />10...100 mA current AC 50/60 Hz<br />10...100 mA current DC<br />100...1000 mA current AC 50/60 Hz<br />100...1000 mA current DC |
Contacts type and composition | 2 C/O | Maximum switching voltage | 440 V AC |
operating voltage tolerance | 0.85...1.1 Uc | Output contacts | 2 C/O |
Maximum measuring cycle | 80 ms | Internal input resistance | 33 Ohm<br />10 Ohm<br />1 Ohm |
Permissible continuous overload | 1.5 A<br />0.15 A<br />0.05 A | Permissible non repetitive overload | 5 A<br />0.2 A<br />0.5 A |
Setting accuracy of the switching threshold | +/-5 % | Switching threshold drift | <= 0.06 % per degree centigrade depending permissible ambient air temperature<br /><= 0.5 % within the supply voltage range (0.85...1.1 Un) |
Setting accuracy of time delay | 10 P | Time delay drift | <= 0.07 % per degree centigrade depending on temperature<br /><= 0.5 % within the supply voltage range (0.85...1.1 Un) |
Hysteresis | 5…30 % adjustable current threshold setting | marking | CE : LVD 73/23/EEC<br />CE : EMC 89/336/EEC |
Overvoltage category | III IEC 60664-1 | [Ui] rated insulation voltage | 500 V IEC |
Supply disconnection value | > 0.1 Uc | 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 24 V DC-13 158 °F (70 °C) IEC 60947-5-1/1991<br />2 A 24 V DC-13 158 °F (70 °C) VDE 0660<br />3 A 115 V AC-15 158 °F (70 °C) IEC 60947-5-1/1991<br />3 A 115 V AC-15 158 °F (70 °C) VDE 0660<br />3 A 24 V AC-15 158 °F (70 °C) IEC 60947-5-1/1991<br />3 A 24 V AC-15 158 °F (70 °C) VDE 0660<br />3 A 250 V AC-15 158 °F (70 °C) IEC 60947-5-1/1991<br />3 A 250 V AC-15 158 °F (70 °C) VDE 0660<br />0.1 A 250 V DC-13 158 °F (70 °C) IEC 60947-5-1/1991<br />0.1 A 250 V DC-13 158 °F (70 °C) VDE 0660<br />0.3 A 115 V DC-13 158 °F (70 °C) IEC 60947-5-1/1991<br />0.3 A 115 V DC-13 158 °F (70 °C) 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 | Width | 0.9 in (23 mm) |
Height | 3.07 in (78 mm) | Depth | 3.1 in (80 mm) |
Terminals description ISO n°1 | (25-26-28)OC<br />(C-B1-B2-B3)CO<br />(A1-A2)CO<br />(15-16-18)OC | Output relay state | Tripped if A measured > A set<br />Tripped if V measured > V set |
9 mm pitches | 2.5 | Net Weight | 0.379 lb(US) (0.172 kg) |
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 | Standards | EN/IEC 60255-6 |
Product Certifications | CSA<br />GL<br />UL | Ambient Air Temperature for Storage | -40…185 °F (-40…85 °C) |
Ambient air temperature for operation | -4…149 °F (-20…65 °C) | Environmental characteristic | 3K3 |
Relative humidity | 15…85 % IEC 60721-3-3 | Shock resistance | 15 gn 11 ms IEC 60255-21-1 |
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 | Protection against electric shocks | 2 kV level 3 IEC 61000-4-5 |
Disturbance radiated/conducted | CISPR 22 - class A<br />CISPR 11 group 1 - class A |
Specifications may be subject to change without notice