Siemens SCALANCE X-100 Modules: 6GK1105-2AB10

Technical Dossier

Product Details And Specifications

Siemens SCALANCE X-100 Series: Comprehensive Module Range and Technical Overview

The Siemens SCALANCE X-100 series represents one of the most widely deployed unmanaged industrial Ethernet switch families in global heavy industry. Installed across petrochemical complexes, nuclear power facilities, offshore platforms, and continuous-process refineries, the X-100 range provides deterministic Layer 2 switching in environments where commercial-grade networking hardware cannot meet the mechanical, thermal, or EMC requirements of industrial automation. The series operates under IEC 61158 and PROFINET IO standards, integrating directly into Siemens SIMATIC, SINUMERIK, and SIMOTION control architectures. Its DIN-rail form factor, 24 VDC supply compatibility, and IP30 enclosure rating make it a default specification in control cabinet builds across the process industries. The installed base of SCALANCE X-100 units in active service globally is estimated in the hundreds of thousands, creating sustained demand for spare parts, replacements, and lifecycle extension services.

The Evolution of SCALANCE X-100 Architecture

The SCALANCE X-100 series was introduced by Siemens in the early 2000s as a successor to OSM/ESM (Optical/Electrical Switch Module) technology used in earlier SIMATIC NET deployments. The original X-100 units provided fixed-port, unmanaged Fast Ethernet (10/100 Mbps) switching with no configuration interface — a deliberate design choice for deterministic, maintenance-free operation in field-level networks.

First-generation X-100 units (e.g., 6GK1105-2AA00, 6GK1105-2AB00) used 100BASE-TX copper ports exclusively. Subsequent revisions introduced fiber-optic uplink variants (6GK1105-2AC00, 6GK1105-2AD00) to address electromagnetic interference in high-voltage switchgear environments. The -2AB10 revision introduced improved surge protection on all RJ45 ports and enhanced conformal coating options for humid or corrosive atmospheres.

Compatibility across hardware revisions is generally maintained at the electrical and mechanical level. Engineers replacing X-100 units in legacy PROFINET ring topologies must verify MRP (Media Redundancy Protocol) support requirements, as the unmanaged X-100 series does not natively support MRP — a function reserved for the SCALANCE X-200 and X-300 managed families. As of 2024, several X-100 variants have entered Siemens' phase-out or end-of-sale lifecycle stage. Siemens recommends migration to the SCALANCE XB-100 or XC-100 series for new installations, but the X-100 remains in active production support through the Siemens Industry Online Support (SIOS) portal for existing installations.

SCALANCE X-100 Full Catalog & Functionalities (SKU List)

The following SKUs represent the verified, commercially documented module range within the SCALANCE X-100 family.

Unmanaged Fast Ethernet Switches — Copper Port Variants

• 6GK1105-2AA00: 5-port 10/100 Mbps unmanaged switch, all RJ45, 24 VDC, DIN-rail mount.
• 6GK1105-2AB00: 8-port 10/100 Mbps unmanaged switch, all RJ45, 24 VDC, DIN-rail mount.
• 6GK1105-2AB10: 8-port 10/100 Mbps unmanaged switch, enhanced surge protection, conformal coating option, 24 VDC.
• 6GK1105-2AA10: 5-port 10/100 Mbps unmanaged switch, enhanced surge protection revision, 24 VDC, DIN-rail.

Unmanaged Fast Ethernet Switches — Fiber Uplink Variants

• 6GK1105-2AC00: 5-port switch, 4x RJ45 + 1x SC fiber (100BASE-FX MM), 24 VDC, DIN-rail.
• 6GK1105-2AD00: 5-port switch, 4x RJ45 + 1x SC fiber (100BASE-FX SM), extended fiber reach, 24 VDC.
• 6GK1105-2AC10: 8-port switch, 7x RJ45 + 1x SC MM fiber uplink, enhanced revision, 24 VDC.
• 6GK1105-2AD10: 8-port switch, 7x RJ45 + 1x SC SM fiber uplink, long-haul fiber, 24 VDC.
• 6GK1105-2AE00: 5-port switch, 4x RJ45 + 1x BFOC/ST MM fiber, legacy connector format, 24 VDC.
• 6GK1105-2AF00: 5-port switch, 4x RJ45 + 1x BFOC/ST SM fiber, single-mode, 24 VDC.

Power Supply & Accessory Modules

• 6GK1900-0AB00: SCALANCE redundant power supply module, 24 VDC input, DIN-rail, for X-100/X-200 series.
• 6GK1901-1BB10-2AA0: IE FC RJ45 Plug 180, field-installable RJ45 connector for SCALANCE and SIMATIC NET.
• 6GK1901-1BB20-2AA0: IE FC RJ45 Plug 145, angled field-installable connector, panel-mount applications.

Replacement & Spare Components

• 6GK1105-2AB10-2AA3: SCALANCE X108 spare/replacement unit, factory-refurbished, tested to OEM specification.
• 6GK1900-0UB00-0AA0: SCALANCE mounting rail clip set, DIN-rail retention hardware for X-100 series enclosures.
• 6GK1905-0DA00: SIMATIC NET IE FC stripping tool, required for field termination of IE FC cables used with X-100 installations.

Sourcing Hard-to-Find & Obsolete SCALANCE X-100 Parts

DriveKNMS maintains a dedicated inventory of SCALANCE X-100 series units, including variants that have reached end-of-sale status through Siemens' official distribution channels. For facilities operating legacy SIMATIC NET topologies — particularly those built prior to 2015 — direct OEM replacement is frequently unavailable through standard procurement routes. DriveKNMS addresses this gap through three supply channels:

• New old stock (NOS): Sealed, date-coded units sourced from authorized distributor excess inventory, verified against Siemens' original packaging and label specifications.
• Tested used units: Deinstalled units from decommissioned plant sections, subjected to full functional testing against OEM performance parameters before resale.
• Cross-reference substitution: Where a specific X-100 variant is unavailable, DriveKNMS engineers identify electrically and mechanically compatible substitutes within the SCALANCE XB-100 or XC-100 families, with documented compatibility notes for the customer's engineering team.

All sourced units are accompanied by a test report, traceability documentation, and a 12-month operational warranty. Emergency shipment is available for critical plant maintenance scenarios with lead times as short as 24-72 hours depending on stock position.

Quality Control for the SCALANCE X-100 Range

The SCALANCE X-100 series presents specific test challenges due to its unmanaged architecture: there is no management interface through which to query port statistics, error counters, or internal diagnostics. DriveKNMS applies a hardware-level test protocol developed specifically for unmanaged industrial switches:

• Port-by-port traffic injection: Each RJ45 and fiber port is tested with bidirectional 100 Mbps traffic using calibrated Ethernet test equipment. Frame loss, CRC error rate, and latency are measured against Siemens' published specifications.
• Power supply stress test: Units are powered at 18 VDC (low-end tolerance) and 32 VDC (high-end tolerance) to verify operation across the full 24 VDC nominal input range.
• Thermal cycling: Units are cycled between 0 degrees C and 60 degrees C operating temperature range to identify capacitor degradation or solder joint failures common in aged units.
• Surge protection verification: For -10 revision units (including 6GK1105-2AB10), transient voltage suppression (TVS) diode integrity is verified on all RJ45 ports using a pulse generator.
• Visual and mechanical inspection: Connector retention force, DIN-rail clip engagement, and LED indicator function are verified against OEM mechanical tolerances.

Test records are retained for a minimum of 5 years and are available to customers upon request for integration into plant maintenance documentation systems.

© 2026 DriveKNMS. All trademarks belong to their respective owners. Specifications are for reference only and subject to change without notice. Verify all parameters against official documentation before installation.