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6GK5124-0BA00-2AA3

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Siemens 6GK5124-0BA00-2AA3 is a SCALANCE X124 unmanaged Industrial Ethernet switch that connects 24 copper Fast Ethernet devices and monitors link and power faults.
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Technical specifications for 6GK5124-0BA00-2AA3

  • Manufacturer:
    Siemens
  • Part Number:
    6GK5124-0BA00-2AA3
  • Product Family:
    Siemens SCALANCE
  • Product Type:
    24-Port Unmanaged Industrial Ethernet Switch
  • Stock:
    1
  • Electrical Ports:
    24 x RJ45
  • Port Speed:
    10/100 Mbit/s
  • Port Operation:
    Half duplex or full duplex
  • Autonegotiation:
    Supported
  • Autocrossover:
    Supported
  • Supply Inputs:
    2 redundant 24 V DC inputs
  • Permitted Supply Range:
    18 to 32 V DC
  • Typical Power Consumption:
    9.4 W
  • Maximum Current Consumption:
    600 mA
  • Signaling Contact:
    1 floating contact
  • Signaling Contact Load:
    Maximum 100 mA at 24 V DC
  • Fault Mask:
    Set by front SET button
  • Protection Class:
    IP30
  • Operating Temperature:
    -20 to 70 C
  • Storage Temperature:
    -40 to 80 C
  • Relative Humidity:
    Up to 95 percent, non-condensing
  • Mounting:
    35 mm rail, S7-300 rail or wall
  • Management:
    Unmanaged
  • Industrial Protocol Support:
    PROFINET-compliant Ethernet forwarding
  • Weight:
    3.31 lbs (1.5 kg)
  • Estimated shipping dimensions:
    18x12.5x12.4cm
  • 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 Copper Ports Power Monitoring Fault Mask Cabinet Mounting

Features:

  • Twenty-four RJ45 ports connect 10/100 Mbit/s copper Industrial Ethernet devices.
  • Dual 24 V DC inputs allow the switch to remain powered when one supply path is lost.
  • The signaling contact and LED group report monitored power, port, and device faults.
Frames entering Siemens 6GK5124-0BA00-2AA3 are forwarded between the appropriate copper ports without a managed configuration layer.

Supply monitoring in 6GK5124-0BA00-2AA3 separates power-path status from Ethernet data so a redundant-feed loss can be reported externally.

The stored fault mask of 6GK5124-0BA00-2AA3 determines which connected ports participate in signaling-contact monitoring.

The Siemens 6GK5124-0BA00-2AA3 SCALANCE X124 Industrial Ethernet Switch may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6GK5124-0BA00-2AA3 SCALANCE X124 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.

Automatic Ethernet Connections

  • Port count: Twenty-four RJ45 interfaces form the copper device connection field.
  • Speed sensing: Each link negotiates 10 or 100 Mbit/s with the connected partner.
  • Duplex mode: Autonegotiation selects half or full duplex when supported by the peer.
  • Pair correction: Autocrossover adapts transmit and receive pairs without a crossover cable.

Redundant Feed and Fault Signal

  • Input paths: Two independent terminal inputs accept the documented 24 V DC supply range.
  • Redundancy: One healthy input can continue powering the switch after the other feed is lost.
  • Fault contact: The floating signaling contact transfers a configured fault state to external monitoring.
  • LED relation: Front indicators identify the affected power or link condition before the contact is reset.

Port Selection for Monitoring

  • Learning action: The SET button records the currently active links as the desired monitoring mask.
  • Link loss: A monitored port losing its link contributes to the group fault indication.
  • Unused ports: Ports excluded from the mask do not create a fault merely because they have no link.
  • Commissioning check: The mask should be learned only after the intended device links are established.

Rail Position and Environment

  • Standard rail: The enclosure clips to a 35 mm DIN mounting rail.
  • System rail: An S7-300 rail can be used with the documented mounting arrangement.
  • Wall option: Direct wall installation is available when the fasteners and clearances are provided.
  • Protection limit: IP30 requires the switch to remain inside a suitable industrial enclosure.
Description
Siemens 6GK5124-0BA00-2AA3 is a SCALANCE X124 unmanaged Industrial Ethernet switch for star or line network segments. Its twenty-four RJ45 ports automatically negotiate 10/100 Mbit/s and adapt transmit and receive pairs, allowing copper devices to exchange frames without a switch configuration project.

Two 24 V DC input paths feed 6GK5124-0BA00-2AA3 redundantly through the terminal block. A loss of one supply, a monitored link condition, or an internal fault can drive the signaling contact and front indicators so the cabinet controller receives a separate fault state from the data traffic.

The port groups of 6GK5124-0BA00-2AA3 support autocrossover and autonegotiation but do not provide managed VLAN, ring-management, or web-configuration functions. The SET button defines the fault-mask behavior by recording which active ports should be monitored.

Mounting options for 6GK5124-0BA00-2AA3 include a standard rail, an S7-300 rail, or direct wall attachment. Its IP30 enclosure belongs inside the control cabinet, where cable bend radius, service access, and the specified ambient range can be maintained.
Alternative Names
6GK51240BA002AA3 6GK5124 0BA00 2AA3 6GK 5124 0BA00 2AA3 Siemens 6GK5124-0BA00-2AA3 6GK5124-0BA00-2AA3 SCALANCE X124 SCALANCE X124 24-port switch 6GK5124-OBAOO-2AA3 Siemens Ethernet switch 6GK5124-0BA00-2AA3
Technical notes
Twenty-four Fast Ethernet ports, redundant DC feeds, a configurable fault mask, and cabinet rail mounting distinguish Siemens 6GK5124-0BA00-2AA3.
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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.
Can 6GK5124-0BA00-2AA3 be configured through a web browser?
No. Siemens 6GK5124-0BA00-2AA3 is an unmanaged switch and has no web-based network configuration.
What does the SET button change on 6GK5124-0BA00-2AA3?
The SET button of 6GK5124-0BA00-2AA3 records the active ports that the switch should include in its fault mask.
Will 6GK5124-0BA00-2AA3 continue running after one supply fails?
Yes, if its second 24 V DC feed remains within range, 6GK5124-0BA00-2AA3 can stay powered while reporting the failed path.
Do the copper ports of 6GK5124-0BA00-2AA3 require crossover cables?
The autocrossover function of 6GK5124-0BA00-2AA3 adapts the RJ45 pair assignment when the connected partner supports the link.
Why can 6GK5124-0BA00-2AA3 signal a fault when Ethernet traffic still passes?
A redundant-supply loss or monitored-link change can activate the 6GK5124-0BA00-2AA3 contact even while other ports continue forwarding traffic.
Why should 6GK5124-0BA00-2AA3 not be mounted as an exposed field device?
The IP30 enclosure of 6GK5124-0BA00-2AA3 requires an appropriate control cabinet or enclosure that protects the switch while preserving cable access and ventilation.

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