ABB TU839 Extended MTU S800 I/O – Product Description

Overview

The ABB TU839 is an extended module termination unit (MTU) designed for ABB’s S800 I/O system within the System 800xA platform. It serves as a robust physical backbone for connecting I/O modules, distributing signals, and supplying sensor power. Moreover, its compact design enables easy installation in tight control cabinet spaces.

Technical Specifications

• Model: TU839

• Part Number: 3BSE046966R1

• Type: Extended Module Termination Unit (MTU)

• System Compatibility: ABB S800 I/O, System 800xA

• Signal Terminals: 2 × 8

• Sensor Power Connections: 2 × 4 fused

• Rated Voltage: Up to 250 V

• Dimensions (W × H × D): 126 × 64 × 110 mm

• Weight: 0.28 kg

• Mounting: DIN‑rail / cabinet installation

• Protection Class: IP20

• Country of Origin: Sweden

• Application Areas: Industrial automation, process control, signal distribution

FAQ

Q: What is the TU839 MTU used for?
A: It connects and terminates I/O modules, distributing signals and sensor power in ABB S800 systems.

Q: How many channels and sensor connections does it support?
A: TU839 supports 8 I/O channels and 2 × 4 fused sensor power connections.

Q: What is the maximum rated voltage and current?
A: The unit supports up to 250 V and 1 A per channel.

Q: How is the unit mounted?
A: The TU839 is designed for DIN‑rail or cabinet installation.

Q: Which industries typically use this MTU?
A: Power generation, oil & gas, pulp & paper, chemical plants, and other process industries.