ABB TU841 is a passive S800 I/O module termination unit for redundant Optical ModuleBus modem configuration with non-redundant I/O. ABB identifies article number 3BSE020848R11. The MTU provides power-supply connections, one electrical ModuleBus, positions for two compatible optical modems and a rotary switch for cluster address settings from 1 to 7. Before replacement, compare the complete TU841 label, article number, modem configuration, I/O architecture and cabinet documentation. Original new condition, In stock availability, worldwide shipping and a one-year warranty are Stockoems commercial terms.
ABB catalog defines TU841 for redundant Optical ModuleBus modem configuration with non-redundant I/O. It provides single power, one electrical ModuleBus and cluster address selection from 1 to 7. Article number: 3BSE020848R11.
Condition, availability and warranty are Stockoems commercial terms and are not ABB manufacturer commitments.
Capture TU841, article number 3BSE020848R11 and every visible marking.
Record the installed architecture, connected modules and field wiring.
Compare drawings, maintenance records and terminal assignment.
Approve only an exact, documented identity match.
Match TU841 and article number 3BSE020848R11 against the product label, modem arrangement, I/O architecture, cluster address and cabinet drawings before replacement.
ABB TU841 is a passive S800 I/O MTU for redundant Optical ModuleBus modems used with non-redundant I/O.
No equivalence is assumed. The complete label, installed I/O module and field wiring must be compared.
Only configuration details explicitly stated for TU841 in the ABB catalog are included.
The ABB catalog used for this page does not state a lifecycle label for TU841, so no lifecycle claim is displayed.
Provide the complete label photos, quantity, destination, installed module details and terminal documentation.
Send us the complete part number, required quantity, destination country and product label photos. Our team will check availability, condition, compatibility requirements and shipping options.
Email: sales6@apterpower.com
WhatsApp: +86 18159889985
Office-based coordination for identity evidence, compatibility screening, quality records, logistics documents and written after-sales communication.
Exact inventory quantities and delivery timing are supplied only after order-specific review.
Look for exact suffix control, clear condition wording, label evidence, written warranty terms and a documented return route.
Request product-label photos, condition confirmation, packaging information, shipping documents and a named after-sales contact.
Verify the complete marking, installed S800 I/O module, terminal assignment, wiring and cabinet documentation.
Changed suffixes, generic photos, copied specifications, unsupported lifecycle claims, unrealistic delivery promises and missing written terms are warning signs.
Share the complete part number, quantity, destination and product label photos for a structured procurement review.
Email: sales6@apterpower.com
WhatsApp: +86 18159889985
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