What Is the Difference Between Siemens 6GK5108-0BA00-2AC2 and Other SCALANCE X108 Models
2026-09-22
The Siemens 6GK5108-0BA00-2AC2 is one of the most widely deployed unmanaged industrial Ethernet switches in the SCALANCE X108 family. As a trusted supplier of industrial networking components, Xinyuan helps engineers, system integrators, and procurement teams distinguish between the various X108 variants so they can select the right device for their automation projects. This article breaks down the key differences in ports, power design, certifications, and lifecycle status, giving you a clear reference for specification and purchasing decisions.
Understanding the SCALANCE X108 Family
The SCALANCE X108 series is a line of compact, unmanaged industrial Ethernet switches designed for control-level networks. All models share a similar form factor and DIN-rail mounting concept, but they differ in port count, connector type, power supply design, and approval scope. The Siemens 6GK5108-0BA00-2AC2 represents the 8-port copper variant with a specific hardware revision and firmware package.
Key Differences at a Glance
| Feature | Siemens 6GK5108-0BA00-2AC2 | Other SCALANCE X108 Models |
|---|---|---|
| Port count | 8 x 10/100 Mbps RJ45 | 5, 8, or 8 + 2 fiber variants |
| Management | Unmanaged | Unmanaged (some variants with fiber uplink) |
| Power supply | 24V DC redundant input | 24V DC or 100–240V AC depending on model |
| Mounting | DIN rail / S7-300 profile | DIN rail, some with wall mount |
| Approvals | CE, UL, cUL, FM, ATEX Zone 2 | Varies by model and region |
| Fiber support | None | Available on X108 fiber variants |
| Lifecycle status | Active | Mixed; some legacy models phased out |
Port Configuration and Connectivity
The most obvious difference lies in port layout. The Siemens 6GK5108-0BA00-2AC2 provides eight RJ45 copper ports, making it ideal for star or tree topologies at the field level. Other SCALANCE X108 models may offer five ports for compact cabinets or include fiber optic uplinks for long-distance and EMI-resistant backbone connections. Xinyuan frequently advises customers to confirm whether copper-only connectivity is sufficient before standardizing on this model.
Power Supply and Redundancy
Power design is another decisive factor. The Siemens 6GK5108-0BA00-2AC2 supports redundant 24V DC input, which improves availability in critical control panels. Some other X108 variants accept AC power, while others offer only a single DC input. Redundant power is a significant advantage in processes where downtime carries high cost.
Certifications and Environmental Ratings
Approval scope differs across the family. The Siemens 6GK5108-0BA00-2AC2 carries CE, UL, cUL, FM, and ATEX Zone 2 approvals, allowing deployment in hazardous and industrial environments. Not every X108 model shares this full set of certifications, so engineers should verify the exact approval list for their target region and application.
FAQ: Common Questions About the Siemens 6GK5108-0BA00-2AC2
Q1: Is the Siemens 6GK5108-0BA00-2AC2 managed or unmanaged?
A1: It is an unmanaged switch, meaning it operates without configuration software, IP addressing, or VLAN setup. It forwards Ethernet frames automatically, which simplifies commissioning and reduces maintenance effort in control-level networks.
Q2: Can the Siemens 6GK5108-0BA00-2AC2 be used with PROFINET?
A2: Yes. Although it is unmanaged, it supports the Ethernet physical layer and frame forwarding required for PROFINET RT communication. It is commonly used to connect PROFINET devices at the field level, provided network planning respects the real-time requirements of the application.
Q3: What is the power supply requirement for the Siemens 6GK5108-0BA00-2AC2?
A3: The device requires a 24V DC power supply and supports redundant input terminals. This redundancy allows two independent power sources to feed the switch, ensuring continued operation if one supply fails.
Q4: Does the Siemens 6GK5108-0BA00-2AC2 support fiber optic connections?
A4: No. This specific model provides eight copper RJ45 ports only. Applications requiring fiber uplinks should consider other SCALANCE X108 variants or higher-level SCALANCE models with optical interfaces.
Q5: Is the Siemens 6GK5108-0BA00-2AC2 still available and supported?
A5: Yes. The model remains active in the Siemens portfolio, with spare parts and technical documentation available through authorized channels. Xinyuan maintains stock and provides lifecycle guidance for long-term projects.
Why Model-Level Accuracy Matters
Selecting the wrong X108 variant can lead to rewiring, additional power supplies, or certification gaps. The Siemens 6GK5108-0BA00-2AC2 offers a balanced combination of eight copper ports, redundant 24V DC power, and broad industrial approvals. Xinyuan recommends confirming port count, power type, and approval requirements before finalizing any bill of materials.
Contact Us
For pricing, availability, technical datasheets, or help comparing the Siemens 6GK5108-0BA00-2AC2 with other SCALANCE X108 models, contact Xinyuan today. Our industrial networking specialists will help you select the right switch, confirm compatibility, and keep your automation projects on schedule.