The ABB 1MRK002133-ABR03 (Revision Variant: 1MRK002133-AB) is a highly specialized, multi-functional internal expansion board developed for the ABB Relion protection and control relay ecosystem. This advanced circuit board consolidates discrete digital inputs, analog signal filtering circuits, dry-contact relay outputs, and high-precision time synchronization hardware into a single, compact add-on module.
Technical Specifications
Manufacturer: ABB
Part Number / Hardware Code: 1MRK002133-ABR03 (Core series reference: 1MRK002133-AB)
Primary Core Functionality: Combined Relay Switching, Analog-to-Digital Conditioning, and High-Precision Time Synchronization
System Category: Programmable Logic Controllers (PLCs) / Machine Control Infrastructure
Hardware Subcategory: PC Board PLC / Internal Expansion Module
Data Logging Precision: Embedded time synchronization hardware for millisecond-accurate Sequence of Events (SOE) tracking
Signal Support: Multi-channel mixed architecture processing binary (digital) and variable analog waveforms
Backplane Connectivity: High-density multi-pin plug interface for stable internal data routing
Net Unit Weight: 0.41 lbs (Approx. 0.186 kg)
Industrial Application Scenarios
The ABB 1MRK002133-ABR03 daughterboard is installed directly into the internal chassis slots of Relion protection relays positioned within medium-to-high voltage switchgear bays and central substation control panels.
Its primary industrial field roles include:
Sequence of Events (SOE) Tracking: Stamping incoming binary transitions with microsecond-level accuracy, allowing engineers to analyze the exact order of component operations during a complex grid fault.
Mixed-Signal Telemetry: Processing analog thermal sensors alongside discrete circuit breaker status lines to give a comprehensive view of equipment health inside the bay.
Synchronized Substation Automation: Interfacing with master GPS or IRIG-B clock sources to align local relay actions with the wider power transmission network, preventing out-of-phase connection errors.
