RCM 201-ROGO
Residual current monitoring device, Type A, for Rogowski coils
The RCM 201-ROGO is a DIN-rail residual current monitoring device for continuous Type A monitoring in TN-S systems, in line with DIN EN 62020 / VDE 0663 / IEC 62020. It records AC residual currents with a Janitza Rogowski coil, so it can be used where a conventional residual current transformer cannot be fitted mechanically, such as on busbars, large cable cross-sections or when retrofitting cramped existing installations. The measured value is read out directly via Modbus RTU over RS485 or passed as a 0–40 mA signal to the RCM inputs of Janitza power analyzers, and separate signal and alarm outputs switch when the set limit is exceeded.
Key Features
- 01Type A residual current monitoring (AC residual currents) to DIN EN 62020 / VDE 0663 / IEC 62020
- 02Measurement with Janitza Rogowski coils, for busbars, large cross-sections and retrofits
- 03Four selectable measuring ranges from 0.1 A up to 125 A
- 040–40 mA output for the RCM inputs of Janitza power analyzers
- 05Signal and alarm outputs with adjustable level, delay and hysteresis
- 06RS485 interface with Modbus RTU; compact 22.5 mm DIN rail housing
Technical Specifications
RCM 201-ROGO
| Item number | 1503629 |
|---|---|
| Residual current monitoring (RCM) | Type A (AC residual currents); measured with a Janitza Rogowski coil (not included) |
| Measuring range | 0.1–5 A, 0.2–10 A, 0.5–25 A, 2.5–125 A (selectable by key or Modbus) |
| Frequency | 40 Hz – 5 kHz |
| Accuracy | Transmission error < 2 % (40–60 Hz), < 5 % (60 Hz – 5 kHz) |
| Current inputs | 1 Rogowski coil input, Mini-DIN 4-pole; 100 mV/kA |
| Inputs / outputs | 0–40 mA residual current output; 1 signal output, 1 alarm output (potential-free transistor, 24 V DC / 100 mA) |
| Alarm settings | Response level 10–100 % of range (1 % steps); delay 1–255 s; hysteresis 0–30 % |
| Communication protocols | RS485 (electrically isolated), Modbus RTU; 9,600–250,000 baud |
| Power supply | 24 V DC / 0.1 A, external, electrically isolated |
| Dimensions | 22.5 × 100 × 110 mm (W × H × D); approx. 0.2 kg |
| Installation type | DIN rail, 35 mm (DIN 43880), any mounting position |
| Operating temperature | -20 … +60 °C |
| Protection | IP30 |
| Certifications / standards | DIN EN 62020 / VDE 0663 / IEC 62020; UL |
Technical values are taken from the manufacturer's published documentation. Confirm against the current datasheet before ordering.
Downloads
Datasheets, manuals and technical documentation are available from the manufacturer's document centre, or on request from us.
Technical sources
- www.janitza.com/en/products/rcm-201-rogo
- www.janitza.com/en/products/rcm-201-rogo/technical-details
- www.janitza.com/en/products/rcm-201-rogo/downloads
- assets.janitza.com/ce18jq9ih0x6/b1a4ce82b410a64d8da71f/daecf54a265bc79f2f82b228b47d5024/RCM_201-ROGO_db_en.pdf
- assets.janitza.com/ce18jq9ih0x6/007c79183dfed2d083697b/84d4e8bd088a15db262164a5a519b3d2/janitza-inst-rcm201rogo-de-en.pdf.pdf
- assets.janitza.com/ce18jq9ih0x6/e5384b0d149e667f6f1c76/59791f5cd59b2571867078ebe4dfe297/janitza-mal-rcm201-rogo-en.pdf
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