TU846 ABB | Passive MTU for Redundant Industrial I/O
Manufacturer: ABB
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Part Number: TU846
Condition：New with Original Package
Product Type: Passive MTU for Redundant Industrial I/O
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Country of Origin: Sweden
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
ABB TU846 Module Termination Unit (MTU)
Overview
The ABB TU846 is a Module Termination Unit (MTU) engineered for ABB S800 I/O systems and CI840/CI840A redundant modules.
It provides passive termination, connecting power supply, dual electrical ModuleBuses, and dual CI840/CI840A modules.
This unit features mechanical keying to prevent incorrect module installation.
Dual rotary switches allow station address configuration from 0–99.
The TU846 supports optical ModuleBus connections via TB842 and TB846, offering flexible and scalable communication for industrial automation systems.
Technical Specifications
| Specification | Details |
|---|---|
| Model Number | TU846 |
| Part Number | 3BSE022460R1 |
| Product Type | Module Termination Unit (MTU) |
| System Compatibility | ABB S800 I/O, CI840/CI840A |
| Power Supply | 24 V DC |
| Communication Support | PROFIBUS, HART, Modbus, AO/AI |
| ModuleBus Support | Dual electrical ModuleBus + optional optical via TB842/TB846 |
| Address Configuration | Dual rotary switches (0–99) |
| Mechanical Keying | 4 keys (2 per CI840 position), 6 positions each |
| Dimensions (W × H × D) | 124 mm × 186 mm × 47 mm |
| Weight | 0.5 kg |
| Operating Temperature | –20°C to +60°C |
| Application Areas | Redundant I/O systems, distributed control, industrial automation |
FAQs
Q1: Is the ABB TU846 genuine and new?
✅ Yes, the TU846 is 100% original and brand new, supplied directly by ABB.
Q2: Do you have TU846 in stock?
✅ Yes, inventory is ready, with shipping 3 days to 2 weeks, depending on order size.
Q3: How is the station address configured?
✅ Using dual rotary switches, allowing addresses from 0 to 99 for CI840/CI840A modules.
Q4: Can the TU846 connect to optical ModuleBus?
✅ Yes, via TB842 and TB846, providing flexible optical connections.
Q5: What protection prevents incorrect module installation?
✅ Mechanical keying ensures proper placement and prevents configuration errors.