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TU848 Module Termination Unit Redundant ABB

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About the Product

ABB TU848 Module Termination Unit for Redundant ModuleBus

  • ABB | TU848 – a passive termination unit for redundant Optical ModuleBus Modem TB840/TB840A.
  • This MTU supports dual power feeds, dual electrical ModuleBus lines, and two TB840/TB840A modems.
  • A rotary switch (positions 1 to 7) sets the cluster address directly on the unit.
  • Two mechanical keys with six positions each offer 36 unique configuration combinations.
  • You can change these key settings easily with a standard screwdriver.

Key Features & Operational Benefits

  • Dual power supply connection ensures high availability for each modem.
  • Redundant ModuleBus architecture supports fault-tolerant I/O networks.
  • Mechanical keying prevents inserting an incorrect module type.
  • Rotary switch provides quick cluster address assignment (1 to 7).
  • Integrated latching device secures the unit to a DIN rail and provides grounding.
  • Supports redundant I/O when paired with TB840/TB840A modems (TU849 serves non-redundant I/O).
  • Passive design consumes only 2.5 W power dissipation.

Environmental & Certification Compliance

  • CE-marked and RoHS compliant (EU, UAE, CN).
  • Electrical safety: EN 61010-1, UL 61010-1, EN 61010-2-201, UL 61010-2-201.
  • Hazardous location approvals: cULus Class 1 Zone 2 and ATEX Zone 2.
  • Marine certificates: ABS, BV, DNV-GL, LR.
  • WEEE compliant (DIRECTIVE/2012/19/EU).

Frequently Asked Questions (FAQ)

  • Is the TU848 a new original ABB unit?
    Yes, we supply 100% new and original ABB TU848 modules.
  • Do you have the TU848 in stock?
    Yes, we maintain ample stock for the ABB 3BSE042558R1.
  • What is the typical delivery time?
    We ship within 5 working days after order confirmation.
  • Which carriers do you use?
    We ship via FedEx, UPS, or DHL – you can choose your preferred option.
  • Can I return the TU848 if it doesn't fit my system?
    Yes, we support a 30-day return policy for unused items in original condition.
  • Does the TU848 support redundant I/O with TB840A?
    Yes, this TU848 model is specifically designed for redundant I/O configurations using TB840 or TB840A modems.
  • What is the difference between TU848 and TU849?
    TU848 provides dual power and redundant ModuleBus for redundant I/O; TU849 supports non-redundant I/O with individual power feeds.

© 2026 NexAuto Technology Limited. All rights reserved.
Original Source: https://www.nex-auto.com/
Contact: sales@nex-auto.com  |  +86 153 9242 9628

  • Quick Quotes: Receive pricing and availability fast from our dedicated customer service team.
  • Delivery: Expedited, freight, and international shipping available worldwide.
  • Warranty: NexAuto offers a 12-month warranty on all parts purchased from us, in addition to any manufacturer coverage.
  • Returns: 30-day return policy for defective or mismatched parts, ensuring peace of mind.
  • Payment: Flexible options including major credit cards, PayPal, and bank transfers.
  • Custom Calibration: Provide your specifications, and we’ll handle the rest with precision.
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