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The ABB TU843 3BSE021443R1 Module Termination Unit is engineered for high-performance signal interfacing in S800 I/O systems. Supporting up to 16 I/O channels and 2+2 process voltage connections, it ensures reliable data routing and flexible configuration in distributed control environments.
Each channel includes dual I/O and one ZP connection, with mechanical keying to prevent incorrect module pairing. The TU843 3BSE021443R1 distributes two ModuleBuses and shifts position signals for accurate module addressing, enhancing system scalability and communication integrity.
| Parameter | Value |
|---|---|
| Model Number | TU843 3BSE021443R1 |
| Manufacturer | ABB |
| Product Type | Compact Product Suite Termination Unit |
| System | S800 I/O DCS |
| Channels Supported | 16 |
| Process Voltage Connections | 2 + 2 |
| Max Voltage | 50 V |
| Max Current per Channel | 3 A |
| Mechanical Key Positions | 36 (4 keys total) |
| Mounting Type | DIN Rail |
| Grounding | Mechanical Latch |
| Dimensions (L×W×H) | 18.5 × 13 × 6.5 cm |
| Weight | 0.62 kg |
| HS Code | 8537101190 |
| Origin | Sweden |
| Condition | Brand New |
| Availability | In Stock |
| MOQ | 1 Unit |
The ABB TU843 3BSE021443R1 is ideal for industrial automation systems requiring high-density signal termination and reliable module addressing. It supports 3-wire field connections and integrates seamlessly with ABB S800 I/O modules.

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Every product — including obsolete items — is covered by a 12-month warranty and 30-day return guarantee.