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6GK5108-2BB00-2AB2

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Siemens 6GK5108-2BB00-2AB2 is a SCALANCE XB108-2 unmanaged industrial Ethernet switch with eight copper ports and two multimode-fiber ST ports.
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Technical specifications for 6GK5108-2BB00-2AB2

  • Manufacturer:
    Siemens
  • Part Number:
    6GK5108-2BB00-2AB2
  • Product Family:
    Siemens SCALANCE
  • Product Type:
    SCALANCE XB108-2 Unmanaged Industrial Ethernet Switch
  • Stock:
    1
  • Copper Ports:
    8 x RJ45
  • Copper Port Rate:
    10/100 Mbit/s
  • Fiber Ports:
    2 x ST/BFOC multimode
  • Fiber Standard:
    100BaseFX
  • Quality of Service:
    Class of Service supported
  • PROFINET Conformance:
    Class A
  • Media Redundancy Protocol:
    Supported
  • Rated Supply:
    24 V AC/DC, redundant inputs
  • Permitted DC Range:
    19.2 to 28.8 V DC
  • Maximum Current:
    0.3 A
  • Power Loss:
    7.2 W
  • Operating Temperature:
    0 to +60 °C
  • Storage and Transport Temperature:
    -40 to +80 °C
  • Maximum Relative Humidity:
    95% non-condensing
  • Protection Rating:
    IP20
  • Mounting Rail:
    35 mm DIN rail
  • Weight:
    0.974 lbs (0.442 kg)
  • Estimated shipping dimensions:
    8x10.9x11.7cm
  • Tariff Code:
    8517623990
  • Country of origin:
    Germany
  • 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 Copper Ports Fiber Paths Redundant Feed Network Fit

Features:

  • Eight RJ45 ports connect local copper devices at 10 or 100 Mbit/s.
  • Two ST/BFOC ports extend the network through 100BaseFX multimode fiber.
  • Redundant 24 V AC/DC inputs maintain the unmanaged switch power path.
Siemens 6GK5108-2BB00-2AB2 forwards copper and optical Ethernet traffic on one unmanaged network.

The fiber interfaces of 6GK5108-2BB00-2AB2 use a separate optical transmit and receive path.

Port indicators on 6GK5108-2BB00-2AB2 support local link and traffic checks.

The complete order number in Siemens 6GK5108-2BB00-2AB2 SCALANCE XB108-2 Unmanaged Industrial Ethernet Switch identifies the configuration that must be checked before product selection or replacement.
Siemens 6GK5108-2BB00-2AB2 SCALANCE XB108-2 Unmanaged Industrial Ethernet Switch Manuals,Datasheets,Link 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.

RJ45 Device Connections

  • Port group: Eight RJ45 sockets attach local industrial Ethernet devices.
  • Link rate: Each copper path operates at ten or one hundred megabits per second.
  • Cable boundary: Twisted-pair cable category, length, shielding, and connector seating must meet the installed network rules.
  • Link diagnosis: Port indicators show whether a physical link and traffic activity are present.

Multimode 100BaseFX Links

  • Optical ports: Two ST/BFOC connectors provide multimode 100BaseFX communication.
  • Fiber pairing: Transmit on one endpoint connects to receive on the other endpoint.
  • Media match: Both devices must use compatible multimode wavelength, connector, and optical-budget specifications.
  • Fault isolation: Clean connectors and a light-path test separate fiber loss from switch or network faults.

Two Supply Inputs

  • Input role: Each supply input can feed the switch independently when it remains inside the permitted range.
  • Redundancy: Loss of one valid feed does not interrupt operation while the second feed remains available.
  • AC or DC: The terminal arrangement supports the documented 24 V AC or DC supply form.
  • Grounding: Protective bonding and cable shielding must follow the cabinet installation plan.

Unmanaged Switching Boundaries

  • Frame forwarding: The switch learns and forwards Ethernet traffic without VLAN or routing configuration.
  • PROFINET use: Conformance Class A supports the documented basic PROFINET network role.
  • Redundancy role: Media Redundancy Protocol support must be applied only within a compatible ring design.
  • Cabinet fit: The DIN-rail IP20 unit requires an enclosure with suitable clearance and temperature control.
Description
Siemens 6GK5108-2BB00-2AB2 is a SCALANCE XB108-2 unmanaged industrial Ethernet switch that joins copper equipment and multimode-fiber links within one Layer 2 network. It learns source addresses and forwards Ethernet frames between its ten physical ports without a routing function.

Eight RJ45 interfaces on 6GK5108-2BB00-2AB2 carry 10 or 100 Mbit/s copper traffic, while two ST/BFOC interfaces carry 100BaseFX traffic over multimode fiber. The copper and optical ports participate in the same switching fabric, allowing frames to pass between the two media types.

Two supply inputs form the redundant 24 V AC or DC power path of 6GK5108-2BB00-2AB2. Either energized input feeds the internal switch electronics, while the second input provides an alternate source if the other supply is removed.

A 35 mm mounting rail supports 6GK5108-2BB00-2AB2 inside an industrial enclosure. Individual port indicators represent link and traffic states for the copper and fiber interfaces, and the IP20 housing leaves environmental protection to the surrounding cabinet.
Alternative Names
6GK51082BB002AB2 6GK5108 2BB00 2AB2 6GK 5108 2BB00 2AB2 Siemens 6GK5108-2BB00-2AB2 6GK5108-2BB00-2AB2 XB108-2 6GK5108-2BB00-2AB2 Ethernet Switch 6GK5108-2BBOO-2AB2 6GK5I08-2BB00-2AB2
Technical notes
The two ST/BFOC ports on Siemens 6GK5108-2BB00-2AB2 require multimode 100BaseFX media and correct transmit/receive pairing; they are not copper-port substitutes.
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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.
Why does a fiber port on 6GK5108-2BB00-2AB2 stay dark while copper links work?
For 6GK5108-2BB00-2AB2, check multimode fiber type, ST connector seating, transmit/receive crossing, optical loss, remote-port standard, and endpoint power.
Can single-mode fiber be connected directly to 6GK5108-2BB00-2AB2?
No. The optical ports on 6GK5108-2BB00-2AB2 are specified for multimode 100BaseFX, so the remote device and installed fiber must match that medium.
Why does 6GK5108-2BB00-2AB2 restart when one supply is removed?
Measure both 6GK5108-2BB00-2AB2 inputs under load and verify polarity, AC or DC wiring, permitted range, terminal tightness, protective device, and shared reference.
What must be checked before replacing 6GK5108-2BB00-2AB2?
Record the 6GK5108-2BB00-2AB2 copper and fiber port assignments, power feeds, rail position, optical pairing, cable labels, and redundancy role.
Why can 6GK5108-2BB00-2AB2 show link but pass no useful controller traffic?
Inspect the 6GK5108-2BB00-2AB2 connected-device addresses, duplicate IP conditions, remote configuration, cable path, protocol diagnostics, and any external managed-switch settings.
How should intermittent optical traffic on 6GK5108-2BB00-2AB2 be diagnosed?
Clean and reseat the 6GK5108-2BB00-2AB2 ST connectors, test both fiber strands, verify optical budget and bend radius, then compare remote error counters.