SIEMENS 6GK5205-3BF00-2AB2 – 5-Port Managed Industrial Ethernet Switch | SCALANCE X200 Platform
Engineering Background
The SCALANCE X200 series represents Siemens’ proven entry-level managed industrial Ethernet switching platform, engineered for deterministic, high-availability communication in factory automation, process control, and infrastructure environments. The 6GK5205-3BF00-2AB2 (SCALANCE X205-3) is a DIN-rail-mounted, 5-port managed switch combining three 10/100 Mbps RJ45 copper ports with two 100 Mbps fiber-optic ports (SC connector, multi-mode), purpose-built for noise-immune, long-distance segment bridging in harsh industrial settings.
Product Positioning
Targeted at automation engineers and system integrators who require PROFINET-compliant, IEC 61850-ready Ethernet infrastructure with centralized SNMP/web-based management, redundancy protocols (MRP/RSTP), and extended temperature tolerance — without the cost overhead of the SCALANCE X300/X400 tiers. Ideal as a field-level switch in SIMATIC S7, TIA Portal, and third-party PLC architectures.
Complete Technical Specifications
| Order Number (MLFB) | 6GK5205-3BF00-2AB2 |
| Product Family | SCALANCE X200 Managed |
| Form Factor | DIN-rail mount, compact housing |
| Total Ports | 5 (3× RJ45 + 2× SC fiber) |
| Copper Ports | 3× 10/100 Mbps, RJ45, auto-negotiation, auto-crossover (MDI/MDI-X) |
| Fiber Ports | 2× 100 Mbps, SC connector, multi-mode (MM), 50/125 µm or 62.5/125 µm |
| Fiber Max. Distance | Up to 3 km (multi-mode, 100BASE-FX) |
| Switching Capacity | 1 Gbps (non-blocking) |
| MAC Address Table | 4,096 entries |
| Management | Web-based (HTTP/HTTPS), SNMP v1/v2c/v3, CLI (Telnet/SSH), PROFINET IO |
| Redundancy Protocols | MRP (Media Redundancy Protocol), RSTP (IEEE 802.1w), STP (IEEE 802.1d) |
| VLAN | IEEE 802.1Q, up to 256 VLANs |
| QoS | IEEE 802.1p, 4 priority queues |
| Supply Voltage | 24 V DC (18–32 V DC), redundant power input |
| Power Consumption | Max. 6 W |
| Operating Temperature | -10 °C to +60 °C |
| Storage Temperature | -40 °C to +80 °C |
| Relative Humidity | 5–95% (non-condensing) |
| Protection Class | IP30 |
| Dimensions (W×H×D) | 60 × 125 × 75 mm |
| Weight | Approx. 300 g |
| Certifications | CE, UL, cUL, ATEX Zone 2, IECEx, GL, DNV, PROFINET Certified |
| EMC Standard | EN 61000-6-2, EN 61000-6-4 |
| Vibration / Shock | IEC 60068-2-6 / IEC 60068-2-27 |
| MTBF | > 300,000 hours |
| HS Code | 8517.62.00 |
| Country of Origin | Germany |
Proven Application Environments
- Automotive Manufacturing: Body-shop and paint-line PROFINET rings with MRP failover <200 ms
- Pharmaceutical / Food & Beverage: Hygienic-area segment isolation via fiber, VLAN-separated OT/IT traffic
- Water & Wastewater: Remote pump-station Ethernet backbone, long-distance fiber runs up to 3 km
- Power Utilities: IEC 61850 substation LAN, GOOSE message transport, DNV/GL marine-certified installations
- Oil & Gas / Chemical: ATEX Zone 2 / IECEx certified for use in potentially explosive atmospheres
- Machine Building (OEM): Compact DIN-rail footprint for integration into control-cabinet Ethernet topology
- Building Automation: BACnet/IP and Modbus TCP convergence over managed VLAN infrastructure
Engineering Advantages
- Fiber + Copper Hybrid: Eliminates ground-loop interference and EMI coupling between control-cabinet segments and field devices over distances copper cannot reliably serve
- MRP Ring Redundancy: Sub-200 ms network recovery — meets PROFINET RT Class 1 availability requirements without additional hardware
- PROFINET IO Device: Fully integrated into TIA Portal v13+ and STEP 7 V5.x; GSD file available for third-party engineering tools
- Redundant 24 V DC Input: Dual power terminals for 1oo2 power supply architecture; fault signaling relay output
- SNMP v3 + HTTPS: Encrypted management plane — compliant with IEC 62443-3-3 network segmentation requirements
- Port Mirroring & RMON: Non-intrusive traffic capture for network diagnostics without production interruption
- Extended Temperature Range: -10 °C to +60 °C ambient — suitable for unheated enclosures and outdoor cabinets
System Architecture & Signal Flow
In a typical PROFINET star/ring topology, the 6GK5205-3BF00-2AB2 functions as a field-level distribution switch:
- Uplink (Fiber Port 1): 100BASE-FX SC connection to plant-level backbone switch (e.g., SCALANCE X308-2) — electrically isolated, EMI-immune fiber segment
- Ring Closure (Fiber Port 2): MRP ring port back to adjacent field switch or backbone — provides automatic failover path
- Device Ports (RJ45 P1–P3): Direct connection to SIMATIC ET 200SP, S7-1200/1500 CPU PN interfaces, HMI panels, drives (SINAMICS), or third-party PROFINET devices
- Management Plane: SNMP traps and PROFINET alarms forwarded to SINEMA Remote Connect or third-party NMS for centralized monitoring
- Power: Dual 24 V DC inputs from redundant SITOP PSU — signaling contact wired to PLC digital input for power-loss alarm
Sourcing & Quality Verification
- ✅ Genuine Siemens product — sourced through authorized industrial distribution channels
- ✅ Pre-shipment inspection: Visual, label, and firmware-version verification against Siemens product database
- ✅ Functional test: Port link-up, management access (web/SNMP), and MRP ring formation verified before dispatch
- ✅ Original packaging: Ships in Siemens OEM box with accessories (DIN-rail clip, terminal block, documentation)
- ✅ Traceability: Serial number and production date recorded; available on request for warranty registration
- ✅ Export compliance: ECCN EAR99 / AL N — no export license required for most destinations
Procurement Process
- Confirm quantity & lead time — Contact us via live chat or email for real-time stock confirmation
- Request quotation — Provide your project PO number; we issue a formal proforma invoice within 2 business hours
- Payment — T/T (bank transfer), PayPal, or credit card accepted; net-30 terms available for qualified accounts
- Dispatch — Orders confirmed before 14:00 CST ship same business day via DHL Express, FedEx IP, or UPS Worldwide
- Documentation — Commercial invoice, packing list, certificate of origin, and test report included with every shipment
- After-sales — 12-month warranty; RMA process initiated within 24 hours of defect report
Technical FAQ
Q: Is the 6GK5205-3BF00-2AB2 compatible with TIA Portal V17/V18?
A: Yes. The GSDML file is available from the Siemens Industry Online Support portal and is compatible with TIA Portal V13 SP1 and later, including V17 and V18.
Q: What fiber cable type is required for the SC ports?
A: Multi-mode fiber (MMF) 50/125 µm (OM2/OM3) or 62.5/125 µm (OM1), SC duplex connectors. Maximum segment length 3 km at 100BASE-FX.
Q: Can this switch be used in an MRP ring with non-Siemens switches?
A: MRP (IEC 62439-2) is an open standard. Interoperability with third-party MRP-capable switches is possible but must be validated during commissioning. For guaranteed interoperability, use SCALANCE X200 switches throughout the ring.
Q: Does the switch support IGMP snooping for multicast PROFINET traffic?
A: Yes. IGMP v1/v2 snooping is supported and enabled by default to prevent multicast flooding on PROFINET RT/IRT networks.
Q: What is the firmware upgrade procedure?
A: Firmware can be uploaded via the web interface (HTTP/HTTPS) or TFTP. Siemens recommends using SINEMA Network Manager for fleet-wide firmware management.
Q: Is a conformal-coated version available?
A: The standard 6GK5205-3BF00-2AB2 does not include conformal coating. For corrosive environments, specify the SCALANCE XC200 series (e.g., 6GK5205-3BF00-2AB2 with -1AB2 suffix for conformal coat variant — verify with Siemens sales).
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