ABB

ABB 3BSE069209R1 TU818 Compact Module Termination Unit

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  • Manufacturer: ABB

  • Product No.: 3BSE069209R1 TU818

  • Product Type: Termination Unit

  • Product Origin: Sweden

  • Payment: T/T

  • Weight: 170g

  • Shipping port: Xiamen

  • Warranty: 12 months

The TU818 is a 32-channel, 50 V Compact Module Termination Unit (MTU) for the ABB S800 I/O system.
It is a passive unit used for connecting field wiring to I/O modules and also incorporates part of the ModuleBus.

The MTU distributes the ModuleBus to the connected I/O module and forwards it to the next MTU in the chain. It also generates the correct I/O module address by shifting the outgoing position signals to the subsequent MTU.

Two mechanical keys are used to configure the MTU for different types of I/O modules. This configuration is purely mechanical and does not affect the functionality of either the MTU or the I/O module. Each key has six selectable positions, allowing for a total of 36 possible configurations.

Features and Benefits

  • Compact installation of I/O modules using one-wire or two-wire connections (depending on I/O module type)

  • Supports up to 32 channels of field signals and process power connections

  • Interfaces for ModuleBus and I/O module connections

  • Mechanical keying prevents installation of incorrect I/O modules

  • Integrated latching device for DIN rail grounding

  • DIN rail mounting

Detailed Technical Data

Parameter Value
Maximum Current per I/O Channel 2.5 A
Maximum Process Connection Current L1+ max. 8 A
L2+ max. 8 A
Acceptable Wire Sizes Solid: 0.5–2.5 mm²
Stranded: 0.5–1.5 mm²
Dielectric Test Voltage 500 V AC

Dimensions

  • Width:
    64 mm (2.52 in.) including connector
    58.5 mm (2.30 in.) edge-to-edge when installed

  • Depth: 64 mm (2.52 in.) including terminals

  • Height: 170 mm (6.7 in.) including latch

  • Weight: 0.17 kg (0.37 lbs)

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