RCM versus RCD: How does residual current monitoring work?
Learn the difference between residual current measurement/alarm and tripping for protection.
Read the technical guideProduct families / Residual current monitoring / LINETRAXX® RCMB300 series
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BENDER DISTRIBUTOR IN TÜRKİYE · ADEO TEKNİK
Bender LINETRAXX® RCMB300 seriesType B Residual Current Monitoring Module
Modular series with CTBC transformer and Modbus RTU interface for AC/DC residual current monitoring in TN and TT systems.
TECHNICAL SUMMARY
Features of this model.
AC/DC residual current monitoring
- Residual current measurement up to 20 A over DC…100 kHz.
- Separate evaluation and threshold assignment for RMS, AC and DC components.
- Two changeover alarm contacts, Modbus RTU and DC 24 V supply.
- CTBC20…210 transformer options; magnetic shielding in P variants.
FROM PRODUCT TO TECHNICAL KNOWLEDGE
All technical guides ↗Related technical guides
Explore the product's function and its system's operating principle through technical explanations.
How do you choose Type A or Type B residual current monitoring?
Review AC, pulsating DC and smooth DC detection coverage together with sensor and model selection.
Read the technical guideResidual current monitoring strategy: Where should measurements be taken?
Compare the information provided by measurement points at main distribution, sub-board and final-circuit levels.
Read the technical guideADEO Teknik · Bender distributor in Türkiye
Ask ADEO Teknik Technical product information and supply support for model selection, compatible components and current manufacturer documentation.
MODEL, ORDER AND ACCESSORY INFORMATION
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18 / 18 options
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Model options and technical values
| Model | Supply voltage U S | Variant | Order code |
|---|---|---|---|
| RCMB301 | DC 24 V (19.2…28.8 V) | Modbus RTU | B74043100 |
Manufacturer table notes (original language):
Required terminals are included in the scope of delivery.
Measuring current transformers
Model options and technical values
| Model | Internal diameter | Order code |
|---|---|---|
| CTBC20 | 20 mm | B98120001 |
| CTBC20P | 20 mm | B98120002 |
| CTBC35 | 35 mm | B98120003 |
| CTBC35P | 35 mm | B98120004 |
| CTBC60 | 60 mm | B98120005 |
| CTBC60P | 60 mm | B98120006 |
| CTBC120 | 120 mm | B98120007 |
| CTBC120P | 120 mm | B98120020 |
| CTBC210 | 210 mm | B98120008 |
| CTBC210P | 210 mm | B98120021 |
Manufacturer table notes (original language):
P = full magnetic shield
Explore compatible accessories
Compatible accessories · 1
| Description | Order code |
|---|---|
| Interface converter USB to RS-485 | B95012045 |
| Terminal block for RCMB301 module* | B74043124 |
| Snap-on mounting for CTBC20 and CTBC20P* | B91080111 |
| Snap-on mounting for CTBC35 and CTBC35P* | B91080112 |
Manufacturer table notes (original language):
* included in scope of delivery
Voltage supply
Compatible accessories · 2
| Model | Maximum number of connectable current transformers | Order code |
|---|---|---|
| STEP-PS/1 AC/24 DC/0.5 | 4 | B94053110 |
| STEP-PS/1 AC/24 DC/1.75 | 14 | B94053111 |
| STEP-PS/1 AC/24 DC/4.2 | 34 | B94053112 |
Based on tables on the manufacturer's current product page. For marked-value footnotes, connection conditions and variant suitability, review Bender product source ↗ and the technical documents together. Listing an order code does not commit to stock availability or delivery time.
BENDER MANUFACTURER DOCUMENTS
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Find product and accessory documents by type or file name. Language and file information appear beside each document.
10 / 10 documents
Datasheet
RCMB300-series
RCMB300-series_D00372_D_XXEN.pdfTechnical summary source · pp. 1, 2, 3Open document ↗Operating manualCTBC series
CTBC_D00336_M_XXEN.pdfOpen document ↗Operating manualRCMB300-series
RCMB300-series_D00372_M_XXEN.pdfOpen document ↗Quick startRCMB300-series
RCMB300-series_D00372_Q_XXEN.pdfOpen document ↗Conformity documentCTxx
CEKO_CTxx.pdfOpen document ↗Conformity documentRCMB30x
CEKO_RCMB30x.pdfOpen document ↗Conformity documentUKCA - CTxx
UKCA_CTxx.pdfOpen document ↗Conformity documentUKCA - RCMB30x
UKCA_RCMB30x.pdfOpen document ↗BrochureHolistic Residual Current Monitoring for data centres
BU-I_DataCentre_ganzheitlichesRCM_Fly_A4_en.pdfOpen document ↗Other technical documentsTÜV NORD - AGH150x, CTACx, CTBCx, EDS44x, CTUB10x, MRCDB30x and RCMB30x
Z_1436.GR.20210803.144728_en.pdfOpen document ↗No documents match your search. Change the search or document type.
About manufacturer sources
This summary is based on the product descriptions, features and variant information on the specified document pages. Consult the manufacturer document for complete technical values, connection information and ordering options.
Current product and variant information · Bender ↗
Data sheets, operating manuals and related manufacturer documents. File names identify the model or accessory; documents retain their original language.
ADEO Teknik · Bender's distributor in Türkiye. Current Bender product source ↗
APPLICATIONS
Its role in your application.
Supports installation monitoring by separately evaluating the RMS, AC and DC components of residual current. Replaceable electronics allow the system to be adapted as monitoring requirements change.
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