Brand: ABB
Category: Safety/Compliance
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for RD3M-48
Uploaded: April 20, 2026, 8:12 p.m.
Manual Publish Date: 2011-09-19
Warranty Information
Refer to the manufacturer for warranty information.
- The RD3M device provides residual current monitoring and protection.
- It can be used with MCBs S200 and moulded-case devices in the Tmax range.
- LEDs and output contacts are used for signalling.
- Pre-alarm function: Activates by moving the dip-switch to ON. Output contacts 7-8-9 switch if a differential fault above 60% IΔ occurs.
- Fail-safe function: Incorporated into the device. If the RD3 device loses power, output contacts 10-11-12 will switch.
Troubleshooting and error codes
| Signal | Condition | Output Contacts |
|---|---|---|
| ON (green) | Stand-by | 7-8 NC, 8-9 NO; 10-11 NO, 11-12 NC |
| Pre Alarm (yellow) | Differential fault >60% IΔ | 7-8 NO, 8-9 NC; 10-11 NO, 11-12 NC |
| FAULT (red) | Differential fault ≥ IΔtrip | 7-8 NO, 8-9 NC; 10-11 NO, 11-12 NC |
| No power to RD3M | FAIL SAFE | 7-8 NO, 8-9 NC; 10-11 NO, 11-12 NC |
| No TR connection | FAULT (red) | 7-8 NO, 8-9 NC; 10-11 NO, 11-12 NC |