ABB 1MRK000173-BBR03 Binary I/O Module for ABB Relion Protection Systems

Product Overview

The ABB 1MRK000173-BBR03 is a high-performance Binary I/O Module engineered by ABB for demanding industrial automation and protection system applications. This versatile digital I/O module provides 16 digital input channels and 16 digital output channels, offering a balanced and expandable solution for integrating binary field signals into control architectures. The ABB 1MRK000173-BBR03 is commonly associated with ABB’s Relion protection and control family, where it serves as a critical interface for monitoring switches, pushbuttons, and sensors while driving actuators, indicators, and small relays . As a member of the 1MRK series, the ABB 1MRK000173-BBR03 delivers reliable signal acquisition and control in substation automation, power generation, and process industrial environments.

The ABB 1MRK000173-BBR03 operates on a nominal 24V DC power supply with a wide input voltage tolerance of 20.4 to 28.8V DC, ensuring stable performance under typical industrial power conditions . Each of the 16 output channels provides a 0.5A drive capability, sufficient for directly powering indicator lamps, solenoid valves, and small relays without the need for interposing devices . The module’s fast response time of less than 10ms makes the ABB 1MRK000173-BBR03 suitable for time-critical control and interlocking applications. Designed with robust optocoupler isolation between the field signals and the system logic, the ABB 1MRK000173-BBR03 effectively protects the control system from ground potential differences and electrical noise, a critical feature for maintaining signal integrity in harsh industrial environments

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Description

Technical Specifications

Parameter Name	Value
Product Model	ABB 1MRK000173-BBR03
Manufacturer	ABB
Product Type	Binary I/O Module / Digital I/O Module
Digital Inputs (DI)	16 Channels
Digital Outputs (DO)	16 Channels
Input Voltage Range	20.4 – 28.8V DC (Nominal 24V DC)
Output Current per Channel	0.5A (Typical)
Response Time	< 10 ms
Signal Isolation	Optocoupler Isolation (Channel-to-System)
Communication Protocols	Modbus RTU, Profibus-DP, Ethernet/IP (Version Dependent)
Operating Temperature	-20°C to +60°C
Storage Temperature	-40°C to +85°C
Enclosure Protection	IP20
Mounting Type	DIN Rail
Approximate Weight	0.1 – 0.5 kg (Varies by Configuration)
Certifications	CE, UL, RoHS

Main Features and Advantages

The ABB 1MRK000173-BBR03 offers a comprehensive set of features that make it an invaluable component for control system expansion. Its most prominent advantage is the high-density 16-input, 16-output channel configuration, which provides a substantial number of discrete I/O points within a compact, DIN-rail mountable form factor . This design allows plant engineers to efficiently address I/O shortages without the cost and complexity of adding large PLC chassis or rack-based expansion modules. The ABB 1MRK000173-BBR03 effectively serves as a “drop-in” I/O expansion solution for a variety of control architectures, from ABB DCS systems to third-party PLC networks.

The ABB 1MRK000173-BBR03 is built to withstand the rigors of industrial deployment. Its wide operating temperature range of -20°C to +60°C ensures dependable performance in both cold and hot environments . The optocoupler isolation on the signal paths provides robust galvanic isolation, protecting the sensitive control electronics from voltage spikes, ground loops, and electromagnetic interference commonly encountered in power generation and substation environments . The fast <10ms response time of the ABB 1MRK000173-BBR03 is critical for applications requiring immediate reaction to field events, such as emergency shutdowns, sequence interlocks, and protective relay operations.

Flexible communication options are a key strength of the ABB 1MRK000173-BBR03. Depending on the specific firmware and configuration, the module supports industry-standard protocols including Modbus RTU, Profibus-DP, and Ethernet/IP . This versatility enables seamless integration into existing industrial networks, whether they are based on RS-485 serial communication or modern Ethernet infrastructure. The ABB 1MRK000173-BBR03 also features clear LED status indicators for power, communication, and individual channel states, simplifying diagnostics and troubleshooting . The robust, IP20-rated enclosure ensures protection against dust and debris within a control cabinet, contributing to the module’s long service life and overall system reliability.