Residual Current Monitoring · Atto RCM D4 ECT
Residual Current Monitoring Devices with External CTs
This RCM candidate monitors residual current through matched differential-current transformers and communicates alarms over RS485.
Three differential-current channelsChannels
RS485 Modbus RTUInterface
Matched ECT residual-current transformersSensors
Monitoring and alarm; no protective tripFunction
Product Overview
This device supplies monitoring and alarm functions for leakage-current supervision. It does not replace a protective RCCB or RCBO in a circuit.
Key Features
- Channels: Three differential-current channels
- Interface: RS485 Modbus RTU
- Sensors: Matched ECT residual-current transformers
- Function: Monitoring and alarm; no protective trip
Available Models / Configurations
Supplier-listed family information; confirm the exact orderable RITOKS configuration.
| Reference model / series | Function | Configuration | Ordering note |
|---|---|---|---|
| Atto RCM D4 ECT | Residual Current Monitoring | Three differential-current channels | Confirm exact order code and ratings |
Matched Current Sensor Selection
These RITOKS references identify supplier-listed ECT sensors for the monitor family above. Confirm the exact monitor, sensor connection and conductor window before quotation.
| RITOKS reference | Construction | Primary current reference | Internal window |
|---|---|---|---|
| RTX-RCT-C13-100 | Closed core | 100 A | 13 mm |
| RTX-RCT-C19-200 | Closed core | 200 A | 19 mm |
| RTX-RCT-C30-400 | Closed core | 400 A | 30 mm |
| RTX-RCT-S16-100 | Split core | 100 A | 16 mm |
| RTX-RCT-S24-200 | Split core | 200 A | 24 mm |
| RTX-RCT-S36-400 | Split core | 400 A | 35.9 mm |
Technical Specifications
| Reference model / family | Atto RCM D4 ECT |
|---|---|
| Channels | Three differential-current channels |
| Interface | RS485 Modbus RTU |
| Sensors | Matched ECT residual-current transformers |
| Function | Monitoring and alarm; no protective trip |
| Exact rating and test report | Confirm against selected model documentation |
Applications
Illustrative application context; confirm the selected model and installation design.
Low-Voltage Distribution Boards
Residual-current sensing around a complete feeder with a matched monitoring device.
Alarm and Maintenance Systems
Investigate leakage trends through a separate monitoring and alarm path.
Industrial Control Cabinets
Coordinate monitoring with the separately specified protective devices.
Information to Confirm for Selection
- Exact Atto RCM D4 ECT order code and configuration
- Complete datasheet, circuit or topology diagram
- Operating ratings and test conditions
- Dimensions, mounting and connection drawing
- Sample, nameplate, MOQ, lead time and OEM documentation
FAQ
Can an RCM replace an RCCB or RCBO?
No. An RCM monitors residual current; a separately selected protective device is needed for automatic disconnection.
Are the listed family options available in one unit?
Not necessarily. Ratings and functions depend on the exact selected version; check the model-specific datasheet.
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Request a Quote
Send the exact model, required ratings, quantity and destination. We will confirm availability and documentation before quotation.
Please include: Exact Atto RCM D4 ECT order code and configuration; Complete datasheet, circuit or topology diagram; Operating ratings and test conditions.