TU818 | ABB 3BSE069209R1 Termination Unit with 1x32 (and 2x16)

Overview

The ABB TU818 (Part Number: 3BSE069209R1) is a compact, single-slot Module Termination Unit (MTU) designed for the S800 I/O platform. It functions as a non-redundant, passive interface baseplate that connects a single S800 I/O module to the ModuleBus, providing field terminal aggregation for field devices without active electronic failure points on the board itself.

Technical Specifications

• Product Type: Compact Module Termination Unit (MTU) for Non-Redundant Configurations
• Model Code: TU818
• Part Number: 3BSE069209R1
• Manufacturer: ABB
• System Family Compatibility: S800 I/O System
• Channel / Module Capacity: Single-slot layout (1 module per MTU)
• Maximum Rated Voltage: 50 V
• Terminal Type: Compression screw terminal block architecture
• Ingress Protection Rating: IP20 (IEC 60529 Compliant)
• Conformal Coating: Factory standard protection for harsh environment reliability
• Mounting Style: Horizontal or Vertical 35 mm DIN Rail
• Physical Dimensions: 17.1 cm x 5.8 cm x 4.2 cm (Standard S800 compact MTU profile)
• Product Net Weight: 0.17 kg

Installation Notes

• Snap the TU818 MTU firmly onto the cabinet DIN rail until the rear locking mechanism fully engages.
• Ensure the integrated grounding clip makes solid, paint-free contact with the metallic rail to guarantee reliable EMI/RFI shielding.
• Set the mechanical keying wheels on the MTU face to exactly match the designated keying profile of the target S800 I/O module before slotting the electronics in.
• Terminate field loop wiring into the screw terminal blocks, ensuring proper wire strip lengths to preserve the touch-safe IP20 rating.