Siemens 6GK5108-2BB00-2AB2 SCALANCE X108 Industrial Ethernet Switch | Replacement, Equivalent & Selection Guide
The Siemens 6GK5108-2BB00-2AB2 is an 8-port unmanaged industrial Ethernet switch from the SCALANCE X108 series, designed for reliable plant-floor networking in harsh industrial environments. This page provides full technical specifications, compatible replacement models, application guidance, and a structured selection guide to help engineers and procurement teams make confident sourcing decisions.
Technical Specifications
- Part Number: 6GK5108-2BB00-2AB2
- Series: SCALANCE X108
- Manufacturer: Siemens AG
- Type: Unmanaged Industrial Ethernet Switch
- Ports: 8 × RJ45 (10/100 Mbps, auto-negotiation, auto-crossover)
- Transmission Rate: 10/100 Mbps
- Switching Method: Store-and-forward
- Power Supply: 24 V DC (18–32 V DC), redundant input
- Power Consumption: Max. 4.5 W
- Operating Temperature: −40 °C to +70 °C
- Protection Class: IP30
- Mounting: DIN rail / S7-300 rail
- Dimensions (W×H×D): 60 × 125 × 124 mm
- Weight: Approx. 720 g
- Certifications: CE, UL, ATEX Zone 2, cULus
- PROFINET: Not supported (unmanaged)
- Diagnostics: LED status indicators per port
Compatible Replacement & Equivalent Models
The following models are functionally equivalent or serve as direct replacements for the 6GK5108-2BB00-2AB2 in most applications. Always verify electrical and mechanical compatibility before substitution.
- Siemens 6GK5108-0BA00-2AB2 – SCALANCE X108, 8-port, standard temp range (0–60 °C), lower cost alternative for non-harsh environments
- Siemens 6GK5116-0BA00-2AB2 – SCALANCE X116, 16-port unmanaged, suitable when port expansion is required
- Siemens 6GK5208-0BA00-2AB2 – SCALANCE X208, 8-port managed, upgrade path when SNMP/PROFINET diagnostics are needed
- Phoenix Contact FL SWITCH 1008 – 8-port unmanaged, 24 V DC, DIN rail, compatible footprint for many panel designs
- Moxa EDS-208A – 8-port unmanaged industrial switch, wide temp, DIN rail, widely used as a cross-brand equivalent
- Hirschmann RS20-0800T1T1SDAEHH – 8-port managed alternative with enhanced diagnostics
Note: Third-party replacements may require firmware or configuration adjustments. Contact Konmask for compatibility verification.
Why Choose the Original Model
- Extended Temperature Range: −40 °C to +70 °C ensures reliable operation in outdoor cabinets, cold storage, and high-heat environments
- Redundant Power Input: Dual 24 V DC inputs prevent single-point power failure
- Siemens Ecosystem Integration: Seamless integration with SIMATIC S7, TIA Portal, and PROFIBUS/PROFINET architectures
- ATEX Zone 2 Certification: Approved for use in potentially explosive atmospheres
- Proven Industrial Reliability: SCALANCE X series is a globally trusted standard in process and discrete manufacturing
- DIN Rail & S7-300 Rail Mounting: Flexible installation directly alongside SIMATIC controllers
Typical Applications
- Machine-level Ethernet networking in SIMATIC S7-300/400/1500 control panels
- Process automation in chemical, oil & gas, and water treatment plants
- Automotive assembly line network infrastructure
- Building automation and HVAC control systems
- Railway and transportation control cabinets
- Outdoor and cold-climate industrial installations (−40 °C rated)
System Compatibility
- PLC Platforms: Siemens SIMATIC S7-300, S7-400, S7-1200, S7-1500; compatible with third-party PLCs via standard Ethernet
- HMI: Siemens SIMATIC HMI panels (TP, KTP series), WinCC, WinCC Flexible
- SCADA: Compatible with any SCADA system using standard TCP/IP Ethernet
- Protocols: TCP/IP, UDP, ICMP (unmanaged — no SNMP, no PROFINET IO device role)
- Topology: Star topology; can be cascaded for line or tree structures
- Cable: Cat5e or Cat6 shielded (STP) recommended for industrial environments
Selection Guide
Use this guide to determine whether the 6GK5108-2BB00-2AB2 is the right model for your application:
- Need <8 ports, unmanaged, −40 °C? → 6GK5108-2BB00-2AB2 ✓ (this model)
- Need 8 ports, unmanaged, 0–60 °C only? → Consider 6GK5108-0BA00-2AB2 (lower cost)
- Need 16 ports, unmanaged? → Upgrade to 6GK5116-0BA00-2AB2
- Need SNMP management or PROFINET diagnostics? → Step up to SCALANCE X208 (6GK5208-0BA00-2AB2)
- Need fiber uplink? → Consider SCALANCE X108-2 or X204-2 series
- Need ring redundancy (MRP/RSTP)? → Managed SCALANCE X200/X300 series required
- ATEX Zone 1 required? → Contact Konmask for SCALANCE XB-200 ATEX variants
Quality Assurance & Sourcing
- Origin: Genuine Siemens product, sourced through authorized industrial distribution channels
- Condition: New-in-box (NIB) and tested surplus stock available — specify on inquiry
- Inspection: Each unit inspected for physical integrity and label authenticity before shipment
- Warranty: 12-month Konmask warranty on all shipped units; OEM warranty honored where applicable
- Traceability: Batch and serial number documentation available on request
- Export Compliance: ECCN classification and export documentation provided for international orders
How to Order
- Part Number: 6GK5108-2BB00-2AB2
- Step 1: Add to cart or submit an RFQ via the product page
- Step 2: Specify required quantity, condition (new / surplus), and delivery timeline
- Step 3: Receive quotation within 1 business day
- Payment: T/T, PayPal, credit card accepted
- Shipping: DHL / FedEx / UPS express worldwide; sea freight available for bulk orders
- Lead Time: In-stock items ship within 3–5 business days; sourced items 7–15 business days
For urgent requirements or volume pricing, contact us directly at support@konmask.com or call +0086 19859288691.
Replacement & Compatibility FAQ
Q: Can I replace 6GK5108-2BB00-2AB2 with 6GK5108-0BA00-2AB2?
A: Yes, for applications where ambient temperature stays above 0 °C. The -0BA00- variant lacks the extended −40 °C rating.
Q: Is this switch compatible with PROFINET IO?
A: As an unmanaged switch, it transparently passes PROFINET traffic but does not function as a PROFINET IO device itself. For PROFINET diagnostics, use a managed SCALANCE X200 or higher.
Q: Can I use a Moxa or Phoenix Contact switch as a drop-in replacement?
A: Electrically yes in most cases (24 V DC, RJ45, DIN rail). However, physical dimensions and mounting holes may differ. Verify panel layout before substitution.
Q: Does Konmask provide a certificate of conformity?
A: Yes. CoC, test reports, and packing lists are available upon request for all orders.
Q: What is the difference between SCALANCE X108 and SCALANCE XB108?
A: The XB108 is a newer, more compact successor with similar port count but updated housing. The 6GK5108-2BB00-2AB2 belongs to the classic X108 line.
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