6GK5104-2BB00-2AA3 Siemens SCALANCE X104-2 Unmanaged Switch

Product Overview

The 6GK5104-2BB00-2AA3 is an industrial-grade unmanaged Industrial Ethernet switch from the Siemens SCALANCE X104-2 product group. This compact networking node bridges electrical copper lines and long-distance fiber channels inside harsh manufacturing environments. It integrates four high-speed RJ45 ports and two multimode BFOC optical interfaces to deliver deterministic raw data transmission across the factory floor.

Engineered for plug-and-play simplicity, the 6GK5104-2BB00-2AA3 removes the configuration complexity of managed switches while maintaining industrial network integrity. Its rugged IP30 compact housing fits onto multiple rail systems. This makes it an ideal infrastructure choice for expandability in safety-isolated networks or distributed control configurations.

Technical Specifications

• Brand: Siemens (SIMATIC)
• Model Number: 6GK5104-2BB00-2AA3
• Product Series: SCALANCE X104-2 Architecture
• Functional Type: Unmanaged Industrial Ethernet Switch
• Copper Interfaces: 4x 10/100 Mbit/s RJ45 ports for local network components
• Fiber Interfaces: 2x 100 Mbit/s Multimode BFOC sockets (ranges up to 5 km)
• Optical Budget: -19 dB to -14 dB transmission power characteristics
• Power Framework: Redundant 24 V DC supply terminals (operational range from 18 V to 32 V DC)
• Maximum Input Current: 0.175 A continuous load
• Active Power Loss: 3.8 W typical at 24 V DC
• Integrated Signaling: 1x 2-pole terminal block for fault signaling contact (rated 0.6A / 60V)
• Chassis Dimensions: 60 mm Width x 125 mm Height x 124 mm Depth
• Net Mass: 0.78 kg industrial-grade casing assembly

Target Equipment & Field Infrastructure

The 6GK5104-2BB00-2AA3 forms the communication backbone for complex automation lines. It links Siemens S7-300, S7-1200, and S7-1500 controller chassis to local distributed I/O stations, variable frequency drives, and operator panels. The dual BFOC multimode fiber ports allow the switch to span up to 5 km. This enables noise-isolated data connections between separated processing buildings, water treatment stations, and heavy-duty marine control centers.

Diagnostic Features & Hardware Controls

The 6GK5104-2BB00-2AA3 features instant, hardware-level tracking systems. The front faceplate incorporates clear status LEDs for real-time monitoring of power redundancy, line link activity, and localized port errors. It also includes an integrated floating fault signaling contact. Technicians can set this contact via an onboard button to trigger external alarms during power drops or port disconnections, which minimizes diagnostic response times.

Logistics, Inclusions & Warranty Terms

• Inventory Status: Maintained in stock for immediate international distribution
• Global Carriers: Shipped worldwide via expedited air transport through DHL, FedEx, and UPS
• Fulfillment Speed: Secured warehouse dispatch within 24 to 48 hours from checkout validation
• Warranty Terms: Covered by a comprehensive 12-month structural and functional warranty
• Documentation Package: Ships with the original electronic system manuals preloaded on CD

Global PLC Spare HUB's Insight

From an industrial maintenance standpoint, the 6GK5104-2BB00-2AA3 is highly valued because it holds a wide array of marine classifications, including ABS, BV, DNV, GL, LRS, and NK. It also carries strict FM3611 Class 1 Division 2 and ATEX Zone 2 hazardous area ratings. This means it is certified to operate safely in spaces containing explosive gases or vapors. By separating local copper sub-nets via optical BFOC links, it stops ground loop currents and high electromagnetic interference from disrupting your central PLC racks.

Frequently Asked Questions

How do you register and lock a network fault condition using the integrated set button?

When the network is operating normally, press the faceplate set button. This saves the current link status to the local memory. If any active port loses its connection after this step, the internal relay trips to trigger your external alarm circuit.

Can this unmanaged switch operate safely if only one 24 V DC power terminal is wired?

Yes, the switch functions correctly with a single power feed. However, it will continuously trigger the fault signaling contact until a redundant secondary supply is connected to the other terminal block.

What is the maximum physical distance supported by the built-in BFOC fiber sockets?

The optical transceivers are optimized for multimode fiber cabling. They can transmit data up to 5 kilometers without needing inline signal repeaters or active boosters.

Does the module support configuration via web-based management or SNMP queries?

No, this model is a strictly unmanaged switch. It does not have an IP address and cannot be accessed via web browsers or TIA Portal software for setting firmware parameters.

What mounting configurations are possible for this specific compact housing?

The rear plate features universal mounting options. It clips directly onto standard 35 mm DIN rails, mounts securely onto standard S7-300 profile rails, or bolts flat against enclosure backpanels for wall installations.

Procurement & Selection Guidance

When securing a backup switch for an existing system, verify that your field connections match the legacy BFOC (ST style) bayonet-twist fiber connectors. Newer SCALANCE modules often transition to SC or LC push-pull connections, which require different patch cords. For critical applications in oil and gas processing or marine propulsion, verify that the hazardous location Class 1 Division 2 compliance plates match your plant's zone maps. This prevents compliance friction during official safety inspections.

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