Siemens 6GK5205-3BB00-2AB2
Siemens 6GK5205-3BB00-2AB2
Siemens 6GK5205-3BB00-2AB2
Siemens 6GK5205-3BB00-2AB2
Siemens 6GK5205-3BB00-2AB2
Siemens 6GK5205-3BB00-2AB2
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6GK5205-3BB00-2AB2

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Siemens 6GK5205-3BB00-2AB2 is a SCALANCE XB205-3 managed Layer 2 industrial Ethernet switch that joins five copper devices and three multimode-fiber links in one network segment.
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Technical specifications for 6GK5205-3BB00-2AB2

  • Manufacturer:
    Siemens
  • Part Number:
    6GK5205-3BB00-2AB2
  • Product Family:
    Siemens SCALANCE
  • Product Type:
    SCALANCE XB205-3 Managed Layer 2 Switch
  • Stock:
    1
  • Copper Ports:
    5 x RJ45, 10/100 Mbit/s
  • Fiber Ports:
    3 x multimode ST, 100 Mbit/s
  • Management Port:
    1 x RJ45
  • Console Port:
    1 x RJ11
  • Industrial Protocol Support:
    PROFINET diagnostics and configuration
  • Redundancy Functions:
    MRP and RSTP
  • Network Segmentation:
    VLAN support
  • Rated Supply:
    24 V DC, redundant input
  • Permitted Supply 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 +70 °C
  • Protection Rating:
    IP20
  • Weight:
    0.772 lbs (0.35 kg)
  • Estimated shipping dimensions:
    8x11.7x10.9cm
  • Tariff Code:
    85176200
  • 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 Applications Communication & Connectivity Safety & Compliance Efficiency

Features:

  • Five 10/100 Mbit/s RJ45 ports connect copper devices and three 100 Mbit/s ST ports connect multimode fiber.
  • VLAN, RSTP, MRP, and PROFINET functions manage segmentation, redundant paths, and network diagnostics.
  • Separate console and management interfaces support service access while redundant 24 V DC inputs maintain supply continuity.
Siemens 6GK5205-3BB00-2AB2 combines copper and optical Ethernet paths in one managed Layer 2 switch.

Multimode ST ports carry the optical segments, while local RJ45 ports attach twisted-pair industrial devices.

Managed redundancy and diagnostics organize forwarding behavior without converting the switch into a Layer 3 router.

Apter Power provides documentation, quotations, and network model matching for Siemens 6GK5205-3BB00-2AB2.
Siemens 6GK5205-3BB00-2AB2 SCALANCE XB205-3 Managed Layer 2 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.
  • Builds compact managed Layer 2 PROFINET and Industrial Ethernet networks for automation equipment and control cabinets.
  • Links copper-connected controllers and terminal devices with multimode fiber infrastructure between industrial network sections.
  • Supports redundant ring networks with up to 50 switches and a reconfiguration time of less than 0.3 seconds.
  • Five RJ45 ports provide 10/100 Mbit/s electrical Industrial Ethernet connections for controllers, operator stations and network devices.
  • Three 100BASE-FX ST/BFOC multimode fiber ports support optical connections over distances of up to 5 km.
  • An RJ11 console interface and support for HTTPS, SNMP, DCP and LLDP enable local servicing and managed network access.
  • IEC 62443-4-2 certification supports the cybersecurity requirements applied to industrial automation and control system components.
  • The device is included in Siemens' UK declaration covering electromagnetic compatibility and restriction of hazardous substances.
  • IP20 enclosure protection and a fused DC supply input provide defined protection for installation inside suitable control cabinets.
  • Rated power loss is 7.2 W, supporting low-heat operation within compact industrial control and network cabinets.
  • Maximum current consumption is 0.3 A from a 24 V DC supply, with an accepted operating range of 19.2 to 28.8 V DC.
  • IGMP snooping, IGMP querier and port-based VLAN functions help organize multicast traffic and improve network resource use.
Description
Siemens 6GK5205-3BB00-2AB2 is a SCALANCE XB205-3 managed Layer 2 switch for industrial Ethernet networks. Five 10/100 Mbit/s RJ45 ports connect copper devices, while three 100 Mbit/s multimode ST ports extend the same managed network over fiber.

The fiber paths on 6GK5205-3BB00-2AB2 provide optical links that are electrically separated from the copper cabling. ST connectors and multimode-fiber parameters must match at both ends, while the five RJ45 ports serve local twisted-pair devices within the documented copper-link limits.

Managed forwarding in 6GK5205-3BB00-2AB2 uses VLAN, RSTP, MRP, and PROFINET functions to control segmentation, redundant paths, and diagnostics. The RJ11 console and separate management RJ45 port provide service access without consuming the normal device-facing copper ports.

Two 24 V DC inputs feed 6GK5205-3BB00-2AB2 through a redundant supply arrangement, so loss of one valid input does not remove power while the other remains available. The IP20 switch mounts inside a cabinet and operates within its specified electrical and temperature limits.
Alternative Names
6GK52053BB002AB2 6GK5205 3BB00 2AB2 6GK 5205 3BB00 2AB2 Siemens 6GK5205-3BB00-2AB2 6GK5205-3BB00-2AB2 SCALANCE XB205-3 Managed Layer 2 Switch 6GK52O5-3BB00-2AB2 6GK520S-3BB00-2AB2 6GK5205-3B800-2AB2
Technical notes
Five copper and three multimode ST ports on Siemens 6GK5205-3BB00-2AB2 share one managed Layer 2 platform. Fiber type, ST termination, VLAN assignment, and ring role must match the network design.
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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 an ST fiber link stay down on Siemens 6GK5205-3BB00-2AB2 while the RJ45 ports work?
For Siemens 6GK5205-3BB00-2AB2, check multimode fiber type, transmit/receive crossing, ST seating, optical budget, and the remote port speed.
Can a single-mode fiber device connect directly to 6GK5205-3BB00-2AB2?
No. The three optical ports on 6GK5205-3BB00-2AB2 are specified for 100 Mbit/s multimode fiber with ST connectors.
What should be checked when an MRP ring remains open at Siemens 6GK5205-3BB00-2AB2?
On Siemens 6GK5205-3BB00-2AB2, verify both ring ports, fiber polarity, MRP manager or client role, device name, and ring topology.
Why can VLAN devices lose communication after replacing 6GK5205-3BB00-2AB2?
The replacement 6GK5205-3BB00-2AB2 must restore VLAN membership, port tagging, management addressing, and any saved switch configuration.
Does redundant power on 6GK5205-3BB00-2AB2 double the switch voltage?
No. The two 24 V DC inputs on 6GK5205-3BB00-2AB2 provide alternative supply paths rather than a series connection.
How should PROFINET identification problems on 6GK5205-3BB00-2AB2 be diagnosed?
Compare the 6GK5205-3BB00-2AB2 device name, IP settings, engineering project, port diagnostics, and management interface before changing cabling.

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