ABB TU848 3BSE042558R1 Redundant Module

Product Overview

The ABB TU848 (3BSE042558R1) is a specialized Module Termination Unit (MTU) engineered for high-availability automation systems. It supports line and module redundancy, ensuring critical process continuity in distributed control environments. Designed for dual I/O and redundant TB840/TB840A setups, it provides a stable, fail-safe interface for complex industrial control loops.

Technical Configuration

The TU848 is built for demanding high-uptime applications, featuring robust power distribution and modular flexibility:

• Redundancy Support: Fully supports line and module redundancy for maximum system uptime.

• Compatibility: Optimized for redundant TB840/TB840A configurations and dual I/O applications.

• ModuleBus Distribution: Handles up to 1.5 A at 5 V and 1.5 A at 24 V for internal bus communication.

• Mechanical Security: Features 36 distinct mechanical keying combinations to prevent incorrect module insertion.

• Mounting Flexibility: Supports both vertical and horizontal installation to suit specific cabinet space requirements.

Specifications

• Part Number: 3BSE042558R1

• ABB Type: TU848

• Power Input: 24 V DC (19.2 – 30 V range)

• Power Dissipation: 2.5 W

• Rated Insulation Voltage: 50 V

• Dielectric Test Voltage: 500 V AC

• Wire Compatibility: Solid/Stranded 0.2–2.5 $mm^2$ (24–12 AWG)

• Torque Specification: 0.5 Nm

• Certifications: CE-marked, EN 61010-1, UL 61010-1, EN 61010-2-201