ABB TU849 MTU | 3BSE042560R1 Optical ModuleBus Termination
Manufacturer: ABB
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Part Number: TU849
Condition：New with Original Package
Product Type: Optical ModuleBus Termination
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Country of Origin: Sweden
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
ABB TU849 3BSE042560R1 Module Termination Unit (MTU)
Overview
The ABB TU849 3BSE042560R1 is a Module Termination Unit (MTU) designed for ABB S800 I/O systems, specifically supporting redundant configurations of the TB840/TB840A Optical ModuleBus Modem.
It provides mechanical and electrical interfaces for connecting I/O modules to the control system and ensures non-redundant I/O communication.
The TU849 features dual power supply inputs, a rotary switch for cluster addressing (1–7), and mechanical keying to guarantee correct module placement.
Its DIN-rail mountable design and robust construction make it ideal for industrial environments requiring high reliability and modular flexibility.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | ABB |
| Model Number | TU849 |
| Part Number | 3BSE042560R1 |
| Product Type | Module Termination Unit (MTU) |
| System Compatibility | ABB S800 I/O, TB840/TB840A Optical Modem |
| Power Supply | Dual 24 V DC inputs (one per modem) |
| Communication | Optical ModuleBus (non-redundant I/O) |
| Cluster Addressing | Rotary switch (1–7) |
| Mechanical Keying | 4 keys, 2 per position, 6 positions each (36 configurations) |
| Mounting Type | DIN rail with locking latch |
| Dimensions (W × H × D) | 47 mm × 186.5 mm × 124 mm |
| Weight | 0.45 kg |
| Operating Temperature | –40°C to +70°C |
| Protection Rating | IP20 (requires enclosure in harsh environments) |
| Application Areas | Process automation, power distribution, telecommunications |
FAQs
Q1: Is the ABB TU849 brand new?
✅ Yes, the TU849 3BSE042560R1 is full new original ABB product, in stock and factory-sealed.
Q2: What is the main function of this MTU?
✅ Provides electrical and mechanical termination for TB840/TB840A Optical ModuleBus Modems.
Q3: How is the cluster address configured?
✅ Using the rotary switch, adjustable from 1 to 7.
Q4: How many module configurations does it support?
✅ Supports 36 different configurations via 4 mechanical keys with 6 positions each.
Q5: What is the power requirement?
✅ Requires dual 24 V DC inputs, one for each modem.