Siemens 6GK5005-0BA00-1AA3 Industrial Ethernet Switch – SCALANCE X005

Siemens 6GK5005-0BA00-1AA3 — 5-Port Unmanaged Fast Ethernet Switch for Industrial Control Networks

In a machine-level Ethernet segment, the switch is the silent arbiter of every frame exchange between a PLC, a distributed I/O rack, and an HMI panel. Its forwarding latency, its tolerance for electrical noise, and its mechanical reliability under continuous 24/7 operation determine whether a control loop closes on time or misses its cycle. The Siemens 6GK5005-0BA00-1AA3 is a 5-port, unmanaged Fast Ethernet switch from the SCALANCE X-000 product family, designed to fulfill this role in compact DIN-rail control cabinets where space is constrained, power budgets are fixed at 24 V DC, and the expectation of maintenance-free operation is non-negotiable.

The SCALANCE X005 occupies the entry tier of Siemens’ industrial switching portfolio, but its construction reflects the same environmental and electrical hardening applied across the broader SCALANCE X line. It is deployed globally in discrete manufacturing cells, process automation field panels, building management systems, and OEM machine enclosures — wherever a small, reliable, plug-and-play Ethernet distribution node is required without the overhead of managed switch configuration.

Unlike commercial-grade switches repurposed for industrial use, the 6GK5005-0BA00-1AA3 is rated to operate continuously from 0 °C to +60 °C ambient, withstands the vibration and shock profiles defined in IEC 61131-2, and draws power directly from the 24 V DC bus common to Siemens SIMATIC control cabinets — eliminating the need for a separate 230 V AC supply or an intermediate DC/DC converter. Its store-and-forward switching architecture ensures that only complete, error-free frames are forwarded, preventing corrupted Ethernet frames from propagating across the segment and triggering spurious PLC faults.

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Technical Parameters

Hardware Logical Analysis

The 6GK5005-0BA00-1AA3 implements a store-and-forward switching fabric, meaning each incoming Ethernet frame is fully received and its FCS (Frame Check Sequence) is verified before the frame is forwarded to the destination port. This is architecturally distinct from cut-through switching: while cut-through reduces forwarding latency by beginning transmission before the full frame is received, it propagates corrupted frames across the segment. In an industrial control network where a corrupted PROFINET cyclic data frame can cause a PLC to enter a fault state, store-and-forward is the operationally correct choice — the marginal latency increase (sub-millisecond at 100 Mbps for standard-length frames) is irrelevant against the cost of a spurious safety interlock trip.

The switch’s EMC design addresses the primary interference sources present in motor-drive cabinets: conducted emissions from variable-frequency drives (VFDs) coupling onto the 24 V DC supply rail, and radiated emissions from high-current switching transients. The 6GK5005-0BA00-1AA3 meets EN 61000-6-2, the industrial immunity standard, which includes 4 kV contact discharge and 8 kV air discharge per IEC 61000-4-2, 10 V/m radiated immunity per IEC 61000-4-3, and 2 kV burst immunity per IEC 61000-4-4. These test levels correspond to the electrical environment inside a typical motor control center (MCC) — not a benign office LAN environment.

The RJ45 ports incorporate auto-negotiation per IEEE 802.3u and auto-MDI/MDIX, which eliminates the need for crossover cables when connecting PLC CPU Ethernet ports directly to the switch. In practice, this reduces commissioning errors in field installations where cable polarity and type are frequently mismatched under time pressure. The MAC address table supports standard unicast forwarding with hardware-based address learning, ensuring that unicast traffic between two ports does not flood all remaining ports — a critical behavior in networks carrying time-sensitive PROFINET IO cyclic frames alongside aperiodic diagnostic traffic.

The 24 V DC power input operates across an 18–32 V DC range, accommodating the voltage sag that occurs on a shared 24 V bus when multiple solenoids or relay coils switch simultaneously. The screw terminal block connection provides a mechanically secure, vibration-resistant power interface — superior to the friction-fit connectors used on commercial switches, which can develop intermittent contact resistance under sustained vibration.

System Integration Benefits

• Direct 24 V DC bus compatibility: Powers from the same supply rail as SIMATIC S7 CPUs and ET 200 I/O stations, eliminating a separate AC/DC power supply and its associated failure mode from the cabinet BOM.
• Zero-configuration deployment: No IP address assignment, no VLAN configuration, no firmware update required at commissioning. The switch is operational within seconds of power application — critical for rapid machine startup and field replacement scenarios.
• Transparent PROFINET frame forwarding: PROFINET IO cyclic frames, alarms, and acyclic record data pass through the switch without modification or delay injection beyond the store-and-forward processing time, preserving the deterministic timing of the PROFINET IO cycle.
• IEC 61131-2 mechanical compliance: Qualified for the vibration and shock profiles generated by servo motor operation, pneumatic actuators, and conveyor drive systems — the switch will not develop intermittent port failures due to mechanical fatigue in a high-vibration machine frame.
• Per-port LED diagnostics: Link and activity status LEDs on each of the five ports allow a technician to identify a disconnected cable, a failed NIC, or a port-level fault without connecting a laptop or a network analyzer — reducing mean time to repair (MTTR) in production environments.
• ATEX Zone 2 approval: Permits installation in control panels located adjacent to Zone 2 hazardous areas (gas group IIC, temperature class T4), covering petrochemical, pharmaceutical, and solvent-handling applications without requiring an additional Ex-rated enclosure for the switch.
• 35 mm DIN rail mounting: Integrates mechanically with Siemens SIMATIC S7-1200/1500 CPUs, ET 200SP base units, SITOP power supplies, and circuit breakers on a common DIN rail — enabling a compact, organized cabinet layout without dedicated switch mounting hardware.
• Scalable upgrade path: When network diagnostic requirements grow — PROFINET topology detection, SNMP monitoring, VLAN segmentation — the 6GK5005-0BA00-1AA3 can be replaced with a SCALANCE X108 or XC-200 series managed switch on the same DIN rail position, with no changes to cabinet wiring or PLC configuration required.

Quality Assurance & Global Logistics

Every unit of the Siemens 6GK5005-0BA00-1AA3 supplied by siemensplc.com is sourced through verified supply channels and subjected to a structured pre-shipment inspection process at our Xiamen, China operations center.

Authenticity verification covers label inspection against current Siemens label specifications, hologram and barcode cross-check, and physical comparison against reference units. Counterfeit industrial networking components are a documented problem in the grey market; our sourcing and inspection process is designed to eliminate this risk for our customers.

Functional pre-shipment test includes power-on at 24 V DC, verification of all five port LEDs for correct link and activity behavior, and a brief traffic injection test to confirm frame forwarding across all port combinations. Units that fail any test criterion are quarantined and not shipped.

Packaging uses anti-static inner wrap, foam-cushioned outer carton, and moisture barrier sealing — appropriate for air freight and sea freight transit conditions. Each shipment includes a commercial invoice, packing list, and certificate of origin for customs clearance.

Logistics from Xiamen: Our location in Xiamen, Fujian Province provides direct access to Xiamen Gaoqi International Airport (XMN) for air freight and Xiamen Port for sea freight. Standard air freight transit times are 3–7 business days to Europe, 5–10 business days to North America, and 2–5 business days to Southeast Asia. DHL, FedEx, UPS, and TNT express services are available for urgent shipments. DDP, DAP, and EXW Incoterms are supported. Export documentation including HS code classification, CITES compliance (where applicable), and dual-use export control screening is handled by our logistics team.

A 12-month warranty covers manufacturing defects from the date of shipment. Warranty claims are processed directly through siemensplc.com — submit your order reference and fault description to [email protected] and our technical team will respond within one business day with a resolution path.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
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