Original ABB 1MRK002311‑AAR02 RCM current input module for Relion IED, substation protection relay spare part.

Product Overview

1MRK002311‑AAR02 is RCM plug‑in current input module for ABB Relion series protection and control IED. It receives secondary current signals from current transformers, converts and transmits measured values to the main CPU board inside relay. It provides galvanic isolation for secondary CT circuit, ensures stable acquisition of protection‑related current data, widely used as maintenance spare part for power plant, substation medium‑high voltage relay protection systems.

Key Features

• Multi‑channel current signal acquisition for CT secondary circuit measurement
• Galvanic isolation between external CT circuit and internal IED logic circuit
• Slot plug‑in structure, directly inserted into internal slot of Relion protection relay
• On‑board status LED for module running and fault indication
• High anti‑interference capability, adapts to harsh electromagnetic environment of substation

• Complies with IEC standard for power protection equipment, easy on‑site replacement

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Technical Specifications

• Brand: ABB
• Model: 1MRK002311‑AAR02
• Module Type: RCM Current Input Module
• Input Source: Current transformer secondary signal
• Isolation: Galvanic isolation for CT circuit
• Power Supply: Powered by relay internal backplane bus
• Operating Temp: ‑20℃ ~ +60℃
• Storage Temp: ‑40℃ ~ +85℃
• Humidity: 5‑95% non‑condensing

• Installation: Internal slot plug‑in for protection relay

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Compatibility

Compatible with ABB Relion REF615, REF620 series protection IED. CT circuit check and IED parameter configuration are required after module replacement.