RM4LA32F
Product ID:33238
Updated: 2026/4/3
Key Features
- 1Detect liquid levels accurately with advanced sensor technology. 2、Operate across a wide 110-130V AC voltage range. 3、Ensure reliable performance with robust, durable components. 4、Customize response with adjustable time and sensitivity settings. 5、Enhance safety with protection against electrolysis and corrosion.
Technical Specifications
Detailed engineering parameters
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Range of Product | Harmony Relay | Relay Type | Liquid level control relay |
| Product or Component Type | Industrial measurement and control relays | Relay name | RM4-L |
| Relay monitored parameters | Detection by resistive probes | time delay | Adjustable 0.1...10 s |
| power consumption | 2.7 VA AC | 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 electrode voltage | 24 V AC |
| Maximum electrode current | 1 mA | Maximum cable capacity | 0 mF |
| Sensitivity scale | 0.25...5 kOhm LS (Low Sensitivity)<br />2.5...50 kOhm St (Standard Sensitivity)<br />25...500 kOhm HS (High Sensitivity) | 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 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 | Width | 0.9 in (22.5 mm) |
| Terminals description ISO n°1 | (A1-A2)CO<br />(15-16-18)OC<br />(25-26-28)OC<br />(B1-B2-B3)CO | Output relay state | According to chosen function |
| 9 mm pitches | 2.5 | Net Weight | 0.364 lb(US) (0.165 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 | UL<br />GL<br />CSA | 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 |
| 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 | 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 11 group 1 - class A<br />CISPR 22 - class A |
Specifications may be subject to change without notice