The RCM 230VAC 3C/0 3ABD00029943 residual current monitoring relay module detects insulation faults in ABB industrial power systems. This unit measures leakage current continuously and trips protection circuits when thresholds exceed limits. Engineers rely on it for equipment safety in grounded and ungrounded networks.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Residual Current Monitoring Relay Module |
| Compatibility | ABB Industrial Power and Automation Systems |
| Part Number | 3ABD00029943 |
| Supply Voltage | 230 V AC |
| Measured Current Range | 3 mA to 3 A, Adjustable |
| Output Contacts | 1 Changeover Contact, 3C/0 Configuration |
| Interface | Terminal Block Connections, DIN Rail Mount |
| Dimensions | 90 mm x 70 mm x 60 mm |
| Weight | Approximately 0.30 kg |
| Component Count | 28 Active Electronic Components |
| Energy Storage | None Required |
| Power Consumption | Approximately 3 VA |
| Operating Temperature | -25°C to 55°C |
| Relative Humidity | 5% to 95%, Non-Condensing |
Measurement and Protection Logic
The module monitors residual current across a 3 mA to 3 A adjustable range. Therefore, it detects insulation degradation before faults escalate into equipment damage. Furthermore, one changeover contact drives alarm or trip circuits directly. Consequently, operators respond quickly to emerging insulation problems.
Interface and Wiring
Terminal blocks link the RCM 230VAC 3C/0 3ABD00029943 to current transformers and control circuits. As a result, installers complete field wiring without special connectors. Additionally, the DIN rail mount simplifies panel layout and replacement.
Power and Environmental Ratings
The unit operates on 230 V AC and consumes roughly 3 VA during normal service. Moreover, it functions from -25°C to 55°C in industrial enclosures. Consequently, it suits both indoor panels and protected outdoor cabinets.
Installation Notes
Operators snap the relay onto a standard DIN rail inside the control panel. The compact housing fits tight spaces beside existing protection devices. However, users should verify transformer ratios before setting trip thresholds.
Details
| Weight | 0.6 kg |
|---|---|
| Dimensions | 180 × 110 × 20 mm |
