6GK5204-2BB10-2AA3 Siemens SCALANCE X204-2 Managed Switch New

Product Overview

The Siemens 6GK5204-2BB10-2AA3 is a high-performance, managed Industrial Ethernet switch from the rugged SCALANCE X204-2 family.

Designed for demanding industrial environments, this compact module bridges copper-based machine networks with long-distance fiber optic backbones.

It combines four electrical RJ45 ports with two multi-mode BFOC optical interfaces to support reliable star, linear, or redundant ring topologies.

With an integrated redundancy manager and comprehensive Layer 2 management capacities, it ensures high network availability and rapid fault recovery.

The unit features robust metal-clip housing optimized for multiple rack formats, including standard DIN rails and specialized S7-300 profiles.

Automation engineers deploy this intelligent component to manage determinism, prioritize traffic, and monitor field communication loops in real time.

Technical Specifications

• Brand: Siemens
• Model Number: 6GK5204-2BB10-2AA3
• Product Series: SCALANCE X204-2
• Switch Type: Managed Industrial Ethernet Switch
• Electrical Ports: 4 x 10/100 Mbit/s RJ45 ports with structural retaining sleeves
• Optical Ports: 2 x 100 Mbit/s multi-mode BFOC (ST) ports running 100BaseFX mode
• Data Transfer Rate: 10 Mbit/s and 100 Mbit/s line speed auto-negotiation
• Supply Input Voltage: Dual redundant 24 V DC inputs (operational window spanning 18 V to 32 V DC)
• Current & Power Losses: Maximum current draw of 0.265 A with an efficiency loss rating of 6.36 W
• Onboard Circuit Protection: Internal overcurrent fuse rated at 0.6 A / 60 V on power rails
• Removable Storage Media: Supports optional C-PLUG slot for automatic configuration backups
• Signaling Contact: 1 x 2-pin terminal block fault signaling contact (rated 24 V DC / 0.1 A maximum)
• Operating Temperature Range: Extended range from -40 °C to +60 °C (storage from -40 °C to +70 °C)
• Relative Humidity Ceiling: 95% maximum at 25 °C under strictly non-condensing industrial parameters
• Enclosure Protection Class: IP30 rated compact rugged housing
• Physical Dimensions: 60 mm Wide x 125 mm High x 124 mm Deep
• Net Weight: 0.78 kg
• Mounting Modalities: 35 mm DIN rail installation, flat wall mounting, and Siemens S7-300 profile rails
• Mean Time Between Failures: Proven service life metrics calculated at 74.64 years (MTBF)
• PROFINET Parameters: Class B conformance category; operates seamlessly as a PROFINET IO device

Network Architecture & Redundancy Protocols

• Integrated Redundancy Manager: Controls high-speed ring configurations to prevent logical data loops
• Ring Reconstitution Time: Executes full media recovery loops in under 0.3 seconds across 100 switches
• Star Network Flexibility: Arbitrary depth configuration restricted only by physical line propagation delay periods
• Media Redundancy Protocol (MRP): Native compliance ensures interoperability inside standard redundant loops
• High Speed Redundancy (HRP): Full vendor-level implementation of HRP ring topologies with manager support
• Parallel Redundancy Protocol (PRP): Passive listening capability inside fault-tolerant PRP automation layouts

Advanced Firmware & Management Capabilities

• Configuration Interfaces: Full support for Command Line Interface (CLI) and Web-Based Management (WBM)
• Engineering Integration: Configured, scaled, and commissioned natively within STEP 7 and TIA Portal
• Diagnostics and Logs: Features independent port diagnostic tables, error statistics, packet size, and type tracking
• SNMP Integration: Supports Simple Network Management Protocol versions v1, v2, and v3 alongside MIB tables
• Alert Management: Generates real-time trap logs sent directly over email loops to factory maintenance hubs
• Traffic Handling: Supports Port Mirroring for deep network analysis and LLDP for automated topology maps
• Time Synchronization: Features native SICLOCK and SNTP protocol support for unified plant timestamping

Suitable Equipment & Application Scenarios

• PLC Infrastructure: Connects Siemens S7-300, S7-1200, and S7-1500 controllers to central enterprise levels
• Fiber Optic Aggregation: Links distributed remote I/O drops over multi-mode fiber to overcome copper distance limits
• Marine Automation: Fully certified for onboard vessel deployment, machinery monitoring, and bridge control loops
• Process Industries: Ideal for oil refining facilities, chemical processing cells, and high-interference power sub-stations

Global PLC Spare HUB's Insight

The 6GK5204-2BB10-2AA3 represents a highly versatile Layer 2 switch for legacy migration and harsh environments. The dual BFOC multi-mode ports allow engineers to maintain robust fiber loops over kilometers, eliminating the threat of common-mode voltage differences between separate factory buildings. By achieving PROFINET Class B certification, it integrates cleanly into the cyclic data framework of STEP 7, making network diagnostic data visible on HMI screens as standard system alarms. The inclusion of the C-PLUG slot is excellent for field service, permitting immediate configuration transfers during hot-swaps without a PC tool.

Global Certifications & Standards

• General Compliance: Full CE marking, South Korean KC licensing, and Australian RCM certification
• EMC Regulatory Benchmarks: Tested to EN 61000-6-4:2001 (Class A emission) and EN 61000-6-4:2001 (immunity)
• Standard Electrical Safety: Listed under UL 60950-1 (File E115352) and CSA C22.2 No. 60950-1 specifications
• Hazardous Atmosphere Approvals: Officially certified under ATEX, UKEX, IECEx, ULhazloc, FM, and China CCC Ex (GB)
• Marine Classification Society Listings: Fully certified by ABS, BV, DNV, DNV GL, KRS, LRS, NK, and PRS

Logistics, Warranty, & Package Details

• Warranty Coverage: Backed by a full 12-month industrial comprehensive replacement warranty
• Global Shipping Networks: Handled via express priority routing through DHL, FedEx, and UPS
• Dispatch Timeline: Securely prepared, scanned, and dispatched within 24 to 48 hours from storage hubs
• Package Manifest: Includes one factory-certified switch module, an electronic manual CD-ROM, and a 4-pin power block

Procurement & Selection Guide

• Verify your fiber optic line termination matches the twist-lock BFOC (ST) style prior to installation loops
• Order a Siemens C-PLUG separately if your maintenance strategy relies on hardware-based configuration recovery
• Ensure the cabinet layout can accommodate the 124 mm depth footprint of this specialized compact module series

Frequently Asked Questions (FAQ)

What does the integrated set button on the front panel of the switch do?

The local button sets the onboard fault signaling contact state, letting technicians easily acknowledge local alarms and clear active error indications.

How does the optional C-PLUG storage card simplify emergency field maintenance?

The module writes its entire configuration, including IP addresses and ring settings, to the plug. If a failure occurs, moving the plug to a new switch restores the network instantly.

Can this module be mounted directly inside an S7-300 rack alongside central CPU cards?

Yes, the rear chassis is cast with specific locking features that slide directly into standard Siemens S7-300 profile rails.

What is the advantage of using the 100BaseFX multi-mode fiber ports over traditional copper lines?

Fiber optic links are completely immune to electromagnetic interference, eliminate ground loops, and support significantly longer connection runs than standard RJ45 cables.

How does the switch handle power input failures when utilizing the redundant power terminal block?

If one power source fails, the secondary input immediately takes over the electrical load without interrupting data traffic, while the signaling contact opens to trigger a system alarm.

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