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TU849 3BSE042560R1

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ABB TU849 3BSE042560R1 is a passive dual-power MTU for two TB840/TB840A optical ModuleBus modems and non-redundant I/O for the S800 I/O Communication Interfaces family.
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Technical specifications for TU849 3BSE042560R1

  • Manufacturer:
    ABB
  • Part Number:
    TU849 3BSE042560R1
  • Product Family:
    ABB Advant OCS and Advant-800xA
  • Product Type:
    Dual-Power Optical ModuleBus Modem Termination Unit
  • Stock:
    1
  • Configuration:
    Redundant TB840/TB840A, single I/O, dual power
  • Communication Protocol:
    ModuleBus
  • Line Redundancy:
    Yes
  • Hot Swap:
    No
  • Power Input:
    24 V DC (19.2-30 V)
  • Power Arrangement:
    Two individual feeds, one per modem
  • ModuleBus Connections:
    Single
  • Cluster Address:
    Rotary switch, positions 1-7
  • ModuleBus Distribution:
    Maximum 5 V 1.5 A and 24 V 1.5 A
  • Conductor Range:
    Solid or stranded 0.2-2.5 mm2 (24-12 AWG)
  • Recommended Torque:
    0.5 Nm
  • Rated Insulation Voltage:
    50 V
  • Dielectric Test:
    500 V AC
  • Power Dissipation:
    2.5 W
  • Mechanical Keying:
    Four keys; 36 configurations
  • Mounting:
    Vertical or horizontal DIN rail
  • Ambient Limit:
    55 C generally; 40 C for vertical mounting
  • Operating Temperature:
    0 to +55 C
  • Storage Temperature:
    -40 to +70 C
  • Relative Humidity:
    5-95%, non-condensing
  • Protection Rating:
    IP20
  • Product Dimensions:
    124 x 47 x 186 mm (W x D x H including latch)
  • Weight:
    0.45 kg
  • Tariff Code:
    85371098
  • Country of origin:
    Sweden
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Dual-Power Planning Single-I/O ModuleBus Cluster Addressing

Features:

  • Dual modem power: Each TB840/TB840A position has its own 24 V input.
  • Single-I/O ModuleBus: One electrical ModuleBus serves the non-redundant I/O arrangement.
  • Four-key configuration: Mechanical keying provides 36 documented configurations.

TU849 is the dual-power termination base for a redundant optical modem pair connected to non-redundant I/O.

Its two power feeds do not change the single electrical ModuleBus and single-I/O architecture stated by ABB.

Ordering review should match TU849 and 3BSE042560R1 with both modem positions, two feeds, cluster address, single ModuleBus route, and four keys.

Availability is subject to Apter Power's current inventory and sourcing confirmation.

Internal resources for TU849 3BSE042560R1:

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

ABB TU849 3BSE042560R1 Dual-Power Optical ModuleBus Modem Termination Unit Specs

General

  • Manufacturer ABB
  • Model TU849 3BSE042560R1
  • Condition New Original ready stock
  • Product Family S800 I/O Communication Interfaces
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

Two-feed verification

  • Separate feeds: Provide one 24 V input per modem.
  • Voltage range: Keep both inputs within 19.2-30 V DC.
  • Protection: Record both feed protection devices.
  • Cable labels: Identify each feed at the terminal unit.

Non-redundant I/O checks

  • Bus count: Confirm one electrical ModuleBus.
  • I/O architecture: Use the documented single-I/O arrangement.
  • Distribution limits: Observe 5 V and 24 V current boundaries.
  • Drawing match: Retain the single-path ModuleBus record.

Modem and identity review

  • Address range: Use rotary-switch positions 1 through 7.
  • Modem pair: Verify both TB840 or TB840A labels.
  • Mechanical keys: Record all four key positions.
  • Article check: Confirm 3BSE042560R1.
Description
The ABB TU849 3BSE042560R1 is a passive dual-power MTU for two TB840/TB840A optical ModuleBus modems and non-redundant I/O in the ABB S800 I/O family.

TU849 3BSE042560R1 is documented with the following system role: It supplies one 24 V input per modem, a single electrical ModuleBus, cluster addressing from 1 to 7, and mechanical keying.

Before ordering TU849 3BSE042560R1, confirm both power feeds, non-redundant I/O, the single ModuleBus, modem pair, cluster address, four key positions, and article number.
Alternative Names
TU8493BSE042560R1 TU849 3BSE042560R1 TU849-3BSE042560R1 ABB TU849 3BSE042560R1 ABB TU849 3BSE042560R1 S800 I/O TU849 TU849 Dual-Power Optical ModuleBus MTU
Technical notes
ABB TU849 3BSE042560R1 combines redundant TB840/TB840A modems, non-redundant I/O, dual power, and a single ModuleBus connection.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is ABB TU849 3BSE042560R1 used for?
It terminates two TB840/TB840A optical ModuleBus modems for non-redundant I/O with individual power for each modem.
Does dual power make TU849 a redundant-I/O base?
No. ABB specifies dual modem power but single I/O and one electrical ModuleBus for TU849.
How does TU849 differ from TU848?
TU849 serves single I/O with one ModuleBus; TU848 serves redundant I/O with a redundant ModuleBus. Both use dual power.
What should be checked on the two TU849 power inputs?
Verify both 24 V feeds, the 19.2-30 V range, protective devices, conductor sizes, torque, and terminal labels.
How is the TU849 cluster address set?
Use the rotary switch from 1 to 7 and record the installed setting before replacement.
Can TU849 be treated as hot-swappable?
No. ABB lists Hot Swap as No, so isolate the system according to the approved maintenance procedure.
How do I request TU849 documentation and pricing?
Open the verified Manuals PDF and send Apter Power the modem types, complete article, quantity, destination, condition, and schedule.

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