ABB 1MRK002133-ABr02 – Hardware Module for Relion Protection IEDs

The ABB 1MRK002133-ABr02 is a genuine ABB hardware module from the 1MRK family, typically used as a factory option or field spare within Relion 650/670-series protection and control IEDs. If you maintain REC/REL/RET/RER units in substations or industrial power systems, this part helps you replace like-for-like hardware with the correct build state (r02) and keep configurations consistent.

One thing I appreciate is the way ABB maintains traceability on 1MRK modules—matching the module revision to your IED’s hardware profile typically saves commissioning time and avoids compatibility surprises. In many cases, it’s the most reliable route to restore an out-of-service bay fast.

• Genuine ABB 1MRK part number: 1MRK002133-ABr02, with identifiable build revision “r02” for clear version control.

• Relion 650/670 platform compatibility: Intended for use in ABB protection IEDs (e.g., REL/RET/REC/RER families) where this module code is specified.

• Backplane powered: Draws power from the host IED—no separate field supply in normal installations.

• Service-friendly replacement: Like-for-like swap helps preserve wiring, settings mapping, and typical test procedures.

• Factory-aligned firmware/hardware: Module revisions are designed to align with supported IED firmware baselines, reducing integration risk.

• Built for protection environments: Selected to operate within IEC protection-class conditions when installed in the intended ABB device.

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From my experience, this 1MRK-coded module format is used wherever Relion protection is standardised: utilities, EPCs, and large industrial sites that prefer ABB’s 650/670 hardware ecosystem.

• Transmission and distribution substations (bay control and line/transformer protection)

• MV switchgear panels in industrial plants

• Power generation protection cabinets and excitation auxiliaries

• Data centers, mining, oil & gas, and process industries where IEC 61850 fleets are common

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• Correct build state (r02): Helps align with your IED’s hardware/firmware combination—typically avoids requalification.

• Lifecycle continuity: Keeps spare parts strategy simple across a mixed fleet of Relion devices.

• Reduced downtime risk: Like-for-like swap generally shortens outage windows and site test effort.

• Compatibility assurance: ABB 1MRK code tracks exact option content; fewer surprises during commissioning.

• Supportable long term: Easier for maintenance teams to document, inventory, and plan replacements.

“We keep a small stock of these ABB 1MRK modules for our 670 relays. When a bay trips and we suspect a hardware fault, swapping to a matching build state has, in most cases, brought the panel back without a full re-engineering cycle.” — Maintenance Supervisor, Utility Substation (anonymized)

• Environment: Install inside a clean, ventilated, IEC-compliant control cabinet; maintain rated ambient per the host IED’s datasheet.

• Safety: De-energize the panel and follow lockout/tagout. Handle the module with ESD precautions and avoid touching connector pins.

• Wiring: Use the host IED’s terminal plan. After replacement, verify I/O mapping and run the device self-tests before energizing.

• Commissioning: Check that the module revision is compatible with the IED firmware. Restore settings and disturbance records as required.

• Routine care: Periodically inspect connectors for looseness, keep the cabinet dust-free, and align firmware updates with ABB release notes where applicable.

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• Conformity: Designed to operate within IEC 60255 protection-class environments when installed in supported ABB IEDs.

• Markings: CE compliant at the IED assembly level; RoHS applied to electronic assemblies in most regions.

• Manufacturing system: Produced under ISO 9001 quality management processes.

• Warranty: Manufacturer warranty typically 12 months from shipment (region- and contract-dependent).

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You might notice that many sites keep complementary items on hand to streamline maintenance. Common pairings include:

• Front fastening kits and panel screws matching the Relion chassis

• Pre-terminated harnesses or terminal block kits for quick swap-over

• Service tools for settings/firmware alignment (per ABB Relion guidelines)

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Note: The 1MRK002133-ABr02 designation refers to a specific ABB module variant. Since functions can differ by option code, it’s best to confirm your exact IED type code and order number so we can verify interface and compatibility before shipment.