The TU842 is a Module Termination Unit (MTU) designed for the S800 I/O system to support redundant I/O configurations. It serves as the physical and electrical interface base, enabling two compatible S800 I/O modules to work in pairs for high-availability process automation applications. Engineered with a maximum voltage rating of 50V, this unit routes signal and power lines safely while facilitating horizontal DIN rail mounting inside electrical control cabinets.
| Parameter | Value |
|---|---|
| Manufacturer | ABB |
| Model Designation | TU842 |
| Product ID | 3BSE020850R1 |
| Product Type | Module Termination Unit |
| System Compatibility | S800 I/O System (System 800xA 4.0/4.1/5.0/5.1/6.0, Compact Product Suite) |
| I/O Configuration | Redundant I/O support |
| Voltage Rating | 50V maximum |
| Mounting Orientation | Horizontal |
| HS Code | 853710 |
| Customs Tariff Number | 85371098 |
| Product Net Width | 124 mm |
| Product Net Height | 186.5 mm |
| Product Net Depth / Length | 64 mm |
| Product Net Weight | 0.66 kg |
| Number of Batteries | 0 |
| RoHS Compliance | Following EU Directive 2011/65/EU |
| WEEE Category | 5. Small Equipment (No External Dimension More Than 50 cm) |
Mount the unit horizontally on a top-hat standard 35 mm DIN rail. Ensure the rail is grounded properly to the backplate of the enclosure to manage electromagnetic interference. Snap the locking clips securely onto the rail to avoid movement under vibration.
Verify that all field wiring routed to the terminal connections does not exceed the maximum specification of 50V. Maintain proper separation between low-voltage signal cables and high-power electrical runs within the cable ducting.
When seating modules into the dual slots of the base unit, ensure that both components are of identical model numbers and firmware revisions to maintain proper synchronization and failover functions.
Keep appropriate open space above and below the horizontally installed base unit. Proper spacing prevents stagnant hot air pockets and guarantees sufficient natural convection across the module housings.
What is the core purpose of the TU842 base unit?
It provides the shared electrical connection points and mechanical mounting slots required to operate two S800 I/O modules in a redundant configuration.
What is the maximum operational voltage supported by this termination unit?
The unit is specified for a maximum operating voltage of 50V.
Can this unit be mounted vertically on the DIN rail?
No, this module termination unit is explicitly designed for horizontal DIN rail mounting.
Does this product incorporate any batteries?
No, the unit contains zero batteries and depends entirely on external system power distribution.
Which ABB control architectures support this device?
It is fully compatible with ABB System 800xA versions 4.0 through 6.0 and the Compact Product Suite running S800 I/O modules.
Global Express Shipping
Returns & Warranty
Manufacturer: ABB
Product No.: 3BSE020850R1
Country of origin:Sweden
Product Type: Redundant Module Termination Unit
Barcode: 85371098
Payment: T/T, Western Union
Weight: 660g
Dimensions: 124 mm x 186.5 mm x 64 mm
Shipping port: Xiamen
Warranty: 12 months
The TU842 is a Module Termination Unit (MTU) designed for the S800 I/O system to support redundant I/O configurations. It serves as the physical and electrical interface base, enabling two compatible S800 I/O modules to work in pairs for high-availability process automation applications. Engineered with a maximum voltage rating of 50V, this unit routes signal and power lines safely while facilitating horizontal DIN rail mounting inside electrical control cabinets.
| Parameter | Value |
|---|---|
| Manufacturer | ABB |
| Model Designation | TU842 |
| Product ID | 3BSE020850R1 |
| Product Type | Module Termination Unit |
| System Compatibility | S800 I/O System (System 800xA 4.0/4.1/5.0/5.1/6.0, Compact Product Suite) |
| I/O Configuration | Redundant I/O support |
| Voltage Rating | 50V maximum |
| Mounting Orientation | Horizontal |
| HS Code | 853710 |
| Customs Tariff Number | 85371098 |
| Product Net Width | 124 mm |
| Product Net Height | 186.5 mm |
| Product Net Depth / Length | 64 mm |
| Product Net Weight | 0.66 kg |
| Number of Batteries | 0 |
| RoHS Compliance | Following EU Directive 2011/65/EU |
| WEEE Category | 5. Small Equipment (No External Dimension More Than 50 cm) |
Mount the unit horizontally on a top-hat standard 35 mm DIN rail. Ensure the rail is grounded properly to the backplate of the enclosure to manage electromagnetic interference. Snap the locking clips securely onto the rail to avoid movement under vibration.
Verify that all field wiring routed to the terminal connections does not exceed the maximum specification of 50V. Maintain proper separation between low-voltage signal cables and high-power electrical runs within the cable ducting.
When seating modules into the dual slots of the base unit, ensure that both components are of identical model numbers and firmware revisions to maintain proper synchronization and failover functions.
Keep appropriate open space above and below the horizontally installed base unit. Proper spacing prevents stagnant hot air pockets and guarantees sufficient natural convection across the module housings.
What is the core purpose of the TU842 base unit?
It provides the shared electrical connection points and mechanical mounting slots required to operate two S800 I/O modules in a redundant configuration.
What is the maximum operational voltage supported by this termination unit?
The unit is specified for a maximum operating voltage of 50V.
Can this unit be mounted vertically on the DIN rail?
No, this module termination unit is explicitly designed for horizontal DIN rail mounting.
Does this product incorporate any batteries?
No, the unit contains zero batteries and depends entirely on external system power distribution.
Which ABB control architectures support this device?
It is fully compatible with ABB System 800xA versions 4.0 through 6.0 and the Compact Product Suite running S800 I/O modules.
| Product Image | Model Number / Title | Condition | Availability | Action |
|---|---|---|---|---|
|
ABB 3BSE008544R2 AI820-eA S800 I/O Analog Input Module | Original New | In Stock | View Details |
|
ABB 3BSE008546R2 AO820-eA S800 Analog Output Module | Original New | In Stock | View Details |
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Color pattern |
White
Greyish White
Silver
|
| Country of origin |
Sweden
|
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