ABB TU838 3BSE008572R1 S800 I/O Extended Module Termination Unit

Description

The TU838 3BSE008572R1 features 24 terminals for connecting various field signals. The "Extended" version offers extra space for wire management and supports three-wire termination for each channel (signal, return, ground). It eliminates the need for external marshalling components, saving cabinet space. The unit includes mechanical keying for correct module insertion and supports hot-swapping of I/O modules, enabling maintenance without power or wiring disruption. Built for industrial durability, it ensures electrical safety and reliable operation.

Specifications

• Manufacturer: ABB

• Model Number: TU838 (3BSE008572R1)

• Product Type: Extended Module Termination Unit (MTU)

• Terminal Points: 24 Screw-type terminals

• Max Voltage Rating: 50 V DC

• Max Current Capacity: 2 A per terminal

• Wiring Range: 0.2 to 2.5 mm² (24-12 AWG)

• Mounting: Standard 35mm DIN Rail

• Interface: ModuleBus communication link

• Protection Class: IP20

• Weight: 0.47 kg

Features

• Three-Wire Interfacing: Optimized for complex field signals by providing dedicated terminals for power, signal, and common return on a single base.

• ModuleBus Connection: Provides the electrical backplane required for high-speed data exchange between the I/O module and the AC 800M controller.

• Safety Keying: Built-in mechanical coding ensures only the correctly rated I/O module can be seated, mitigating the risk of human error during installation.

• Hot-Swap Compatibility: Supports the replacement of active I/O modules during live operation to maximize system uptime and process continuity.

• EMI Rejection: Designed with grounding points to manage high-frequency interference, protecting the integrity of sensitive analog and digital signals.

• Vibration-Resistant Terminals: High-quality screw-clamp terminals ensure stable electrical contact in demanding industrial manufacturing environments.