What is an MRCD? The principle of modular residual current protection
Explore the protection chain comprising a compatible measuring current transformer, MRCD module and circuit breaker.
Read the technical guideProduct families / Residual current monitoring / LINETRAXX® MRCDB423
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BENDER DISTRIBUTOR IN TÜRKİYE · ADEO TEKNİK
Bender LINETRAXX® MRCDB423Type B MRCD Device
AC/DC-sensitive Type B MRCD device for TN and TT circuits with CTUB101-CTBC measuring current transformers.
TECHNICAL SUMMARY
Features of this model.
Modular residual current protection · MRCD
- Designed for an MRCD combination according to IEC 60947-2 Annex M.
- RMS measurement, LC display and LED alarm indicators.
- K1 relay for prewarning; K2 relay for controlling a suitable switching element.
- Measuring current transformer connection monitoring and fault memory.
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 guideRCM versus RCD: How does residual current monitoring work?
Learn the difference between residual current measurement/alarm and tripping for protection.
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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16 / 16 options
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Model options and technical values
| Model | Alarm range I Δn | Rated frequency | Supply voltage U S * | Order code |
|---|---|---|---|---|
| MRCDB423-D-1 | 30 mA…3 A | 0…2000 Hz | DC 9,6…94 V / AC 42…460 Hz, 16…72 V | B94043055 |
| MRCDB423-D-2 | 30 mA…3 A | 0…2000 Hz | DC 70…300 V / AC 42…460 Hz, 70…300 V | B94043056 |
Manufacturer table notes (original language):
* Absolute values of the voltage range
Explore compatible accessories
Compatible accessories · 1
| Model | Current transformer diameter | Display | Order code |
|---|---|---|---|
| CTUB101-CTBC20 | ø 20 | – | B78120010 |
| CTUB101-CTBC20P | ø 20 | ✓ | B78120020 |
| CTUB101-CTBC35 | ø 35 | – | B78120012 |
| CTUB101-CTBC35P | ø 35 | ✓ | B78120022 |
| CTUB101-CTBC60 | ø 60 | – | B78120014 |
| CTUB101-CTBC60P | ø 60 | ✓ | B78120024 |
| CTUB101-CTBC120 | ø 120 | – | B78120016 |
| CTUB101-CTBC120P | ø 120 | ✓ | B78120026 |
| CTUB101-CTBC210 | ø 210 | – | B78120018 |
| CTUB101-CTBC210P | ø 210 | ✓ | B78120028 |
Manufacturer table notes (original language):
Connection cable measuring current transformer – MRCDB423
Compatible accessories · 2
| Model | Length/m | Order code |
|---|---|---|
| CTX-100 | 1 | B98110080 |
| CTX-250 | 2,5 | B98110081 |
Manufacturer table notes (original language):
Accessories
Compatible accessories · 3
| Model | Order code |
|---|---|
| Mounting clip for screw mounting (one piece per device) | B98060008 |
| Mounting frame XM420 | B990994 |
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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4 / 4 documents
Datasheet
MRCDB423
MRCDB423_D00396_D_XXEN.pdfTechnical summary source · pp. 1, 2Open document ↗Operating manualMRCDB423
MRCDB423_D00396_M_XXEN.pdfOpen document ↗Conformity documentMRCDB423
CEKO_MRCDB423.pdfOpen document ↗Conformity documentUKCA - MRCDB423
UKCA_MRCDB423.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.
Used with a suitable circuit breaker in circuits containing rectifiers, chargers and variable-frequency drives. Prewarning and main alarm outputs support residual current monitoring and the circuit-breaker trip arrangement.
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