Protection Relay I/O Solution – ABB 1MRK002133-ACR02 | REX521 Series
Where This Product Is Used
The ABB 1MRK002133-ACR02 Analog Digital I/O Module is purpose-built for integration into ABB’s REX521 feeder protection relay platform. It is deployed across a wide range of critical power system applications, including:
- Medium-voltage switchgear panels – providing analog measurement inputs and digital control outputs for feeder protection schemes
- Industrial substations – enabling real-time monitoring of current, voltage, and status signals in 6–35 kV distribution networks
- Power plant auxiliary systems – interfacing with generator protection and motor feeder control circuits
- Oil & gas facilities – supporting protection relay I/O expansion in hazardous-area switchrooms
- Water treatment & utilities – used in pump station MCC panels requiring reliable analog/digital signal conditioning
- Renewable energy installations – wind farm and solar plant collector feeder protection systems
Technical Specifications
| Attribute | Value |
|---|---|
| Part Number | 1MRK002133-ACR02 |
| Manufacturer | ABB |
| Series / Platform | REX521 Feeder Protection Relay |
| Module Type | Analog Digital I/O Module |
| Form Factor | Plug-in relay module (DIN-rail compatible chassis) |
| Analog Inputs | Current & voltage measurement channels (CT/VT compatible) |
| Digital I/O | Binary input/output channels for trip, alarm, and control signals |
| Communication | Internal bus interface to REX521 relay CPU module |
| Operating Temperature | -10°C to +55°C (IEC 60068-2) |
| Weight | 780 g |
| Compliance | IEC 60255, CE Marked |
| Country of Origin | Sweden / EU |
Why Engineers Specify This Model
- Drop-in compatibility – Designed exclusively for the REX521 chassis; no firmware reconfiguration required when replacing a like-for-like module
- High measurement accuracy – Analog channels maintain class 0.5 accuracy for current and voltage inputs, critical for protection coordination studies
- Robust digital I/O – Optically isolated binary inputs withstand industrial noise environments typical of switchgear rooms
- Long service life – ABB’s relay modules are rated for 20+ year operational life, reducing lifecycle replacement costs
- Proven field record – REX521 platform is installed in thousands of substations globally across utilities and industrial sites
- Simplified spares management – Single module covers both analog measurement and digital control functions, reducing spare parts inventory
Complete System Bill of Materials
For a complete REX521 feeder protection relay system, engineers typically specify the following alongside the 1MRK002133-ACR02:
- REX521 CPU / Main Module (1MRK002133-Axxx series)
- REX521 Power Supply Module
- REX521 Communication Module (IEC 61850 / Modbus / DNP3)
- REX521 HMI / Local Panel Interface
- CT/VT terminal blocks and wiring accessories
- DIN-rail mounting chassis and backplane
- ABB CAP505 / PCM600 relay configuration software license
Compliance & Industry Standards
- IEC 60255 – Measuring relays and protection equipment
- IEC 61850 – Communication networks and systems in substations (platform-level)
- IEC 60068-2 – Environmental testing (temperature, humidity, vibration)
- CE Marking – EU Low Voltage Directive and EMC Directive compliance
- ATEX / IECEx – Consult ABB for hazardous area installation guidance
Quality Assurance & Sourcing
At Konmask.com, every ABB module is sourced through verified industrial supply channels. Our quality process includes:
- Physical inspection of part markings, labels, and firmware revision against ABB documentation
- Functional bench-test verification where applicable
- Anti-counterfeit screening aligned with ABB’s authorized parts guidelines
- Secure ESD-safe packaging for international shipment
- Full traceability documentation available on request
How to Source This Part
The ABB 1MRK002133-ACR02 is a specialist relay module with limited availability on the open market. Konmask.com maintains stock of hard-to-find ABB protection relay components for rapid dispatch. To order:
- Online: Add to cart directly on this page
- Email RFQ: support@konmask.com
- Phone / WhatsApp: +0086 19859288691
- Lead time: In-stock items ship within 1–3 business days; ex-stock orders confirmed within 24 hours
- Export: We ship globally with full export documentation (commercial invoice, packing list, COO)
Application-Specific FAQ
Q: Is the 1MRK002133-ACR02 compatible with all REX521 variants?
A: This module is designed for the REX521 platform. Compatibility depends on the specific REX521 chassis revision and firmware version. Please share your relay nameplate data when inquiring so we can confirm fit.
Q: Can this module be used as a standalone I/O unit outside the REX521?
A: No. The 1MRK002133-ACR02 is a plug-in module that operates exclusively within the REX521 relay chassis via its internal backplane bus.
Q: Do you provide ABB configuration software (PCM600) with the module?
A: The module itself does not require separate software licensing. PCM600 is used at the relay system level. Contact us if you need assistance sourcing PCM600 licenses.
Q: What is the warranty on this module?
A: Konmask.com provides a 90-day functional warranty on all modules. Extended warranty and service agreements are available on request.
Q: Can you supply multiple units for a substation retrofit project?
A: Yes. We handle project-quantity orders. Contact us with your BOM and required delivery schedule for a project quotation.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
