Product Overview
The TU841 (Part Number: 3BSE020848R1) is a high-reliability Module Termination Unit (MTU) designed for the ABB S800 I/O system, commonly utilized within Symphony Plus and AC 800M control architectures. As a critical hardware component, the TU841 (3BSE020848R1) provides the mechanical and electrical interface between field wiring and industrial I/O modules. It supports up to 16 channels and is specifically engineered to facilitate redundant ModuleBus communication. This ensures that even in the event of a bus failure, the I/O module remains accessible to the controller, making it an essential component for high-availability process automation systems where downtime is not an option.
Detailed Technical Specifications
| Feature | Specification |
| Manufacturer | ABB |
| Model Number | TU841 |
| Product ID | 3BSE020848R1 |
| Product Type | Module Termination Unit (MTU) |
| System Compatibility | S800 I/O, Symphony Plus, AC 800M |
| I/O Channels | Up to 16 channels (dependent on I/O module) |
| Bus Compatibility | Supports Redundant ModuleBus |
| Connection Type | Screw terminals for field wiring |
| Voltage Rating | 50 V Max |
| Current Rating | 2 A per channel (Typical) |
| Isolation | Galvanic isolation to protect system logic |
| Operating Temperature | -25 °C to +60 °C |
| Dimensions | 45 mm x 119 mm x 71 mm |
| Weight | 0.2 kg (Net) / 2.0 kg (Shipping) |
| Housing Material | Flame-retardant industrial plastic |
| Certifications | CE, UL, IEC compliant |
What's clients say about us
Excellent Emergency Support!
Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.
Mark Thompson
Maintenance Manager, USAReliable Source for New Spares
Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.
Robert Hoffmann
Engineering Lead, GermanyTop-tier Service and Quality
We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.
Lucas Müller
Operations Director, GermanyRelated Products
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Guide
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