Westermo SDW-550EC Industrial EC Ethernet Switch – SDW-500 Series
When a managed Ethernet switch fails in a railway control cabinet or a trackside automation enclosure, the consequences are immediate and severe: loss of real-time communication between PLCs, signal controllers, and SCADA systems, leading to service disruption, safety incidents, and costly unplanned downtime. In environments where milliseconds matter and redundancy is non-negotiable, the network infrastructure must be as reliable as the rolling stock itself. The Westermo SDW-550EC is purpose-built to eliminate this risk — delivering deterministic, hardened Ethernet switching exactly where it is needed most.
The SDW-550EC occupies a critical position within Westermo’s SDW-500 Series, a product family engineered specifically for EN 50155-compliant railway and harsh industrial environments. Westermo, a Swedish manufacturer with decades of heritage in industrial data communications, is globally recognized as a benchmark supplier for rail operators, system integrators, and automation OEMs. The SDW-550EC is deployed across mainline rail, metro, light rail, and industrial automation projects on every continent, making it one of the most trusted managed switches in the EN 50155 ecosystem.
Technical Specifications
- Model: SDW-550EC
- Series: SDW-500 Series
- Brand: Westermo
- Type: Managed Industrial EC Ethernet Switch
- Standard Compliance: EN 50155 (Railway Rolling Stock Electronics)
- Form Factor: DIN-rail / panel-mount, compact rugged housing
- Operating Temperature: Extended industrial range (refer to official Westermo datasheet for exact values)
- Power Input: Wide-range DC input suitable for railway power supplies
- Redundancy Protocol: Supports ring redundancy (FRNT / RSTP) for sub-50ms failover
- Management: Web GUI, CLI, SNMP — full Layer 2 managed capability
- Vibration & Shock: Designed to EN 61373 railway vibration and shock standards
- EMC: EN 50121 railway EMC compliance
- Weight: Approx. 1,100 g
Note: Always verify exact specifications against the official Westermo SDW-550EC datasheet before system design.
Key Features & Benefits
- EN 50155 Certified: Meets the stringent requirements for electronics used in railway rolling stock — temperature cycling, humidity, vibration, and shock.
- Fast Ring Redundancy: Network recovery in under 50 ms, ensuring continuous communication even during a link failure — critical for safety-related systems.
- Full Layer 2 Management: VLAN segmentation, QoS prioritization, port mirroring, and IGMP snooping give network engineers complete traffic control.
- Wide DC Input Range: Compatible with standard railway DC bus voltages, eliminating the need for additional power conditioning.
- Rugged Sealed Housing: Resistant to dust, moisture, and corrosive atmospheres found in trackside and on-board environments.
- Compact DIN-Rail Design: Space-efficient installation in crowded control cabinets without compromising port density.
- Long Product Lifecycle: Westermo’s commitment to extended availability supports long-term rail project maintenance windows.
Industry & Equipment Applications
- Railway Rolling Stock: On-board Ethernet backbone for passenger information systems, CCTV, door control, and traction monitoring.
- Trackside & Wayside Systems: Interlocking, signalling, and level crossing control networks.
- Metro & Light Rail: Station automation, platform screen door control, and passenger counting systems.
- Industrial Automation: Process control networks in harsh factory and utility environments requiring EN 50155-grade reliability.
- Energy & Utilities: Substation automation and remote terminal unit (RTU) communication networks.
- Transportation Infrastructure: Tunnel monitoring, bridge control, and intelligent transport systems (ITS).
System Integration & Compatible Parts
The SDW-550EC is designed to integrate seamlessly within Westermo’s broader SDW-500 Series ecosystem and is compatible with:
- Other SDW-500 Series switches for scalable ring or star topology networks
- Westermo WeOS-based routers and gateways for WAN connectivity
- Standard SFP fiber modules for extended-distance or EMI-immune fiber uplinks
- EN 50155-compliant DC power supplies from major rail power vendors
- SCADA and PLC systems communicating via standard Ethernet protocols (Modbus TCP, PROFINET, EtherNet/IP)
Contact our engineering team at support@konmask.com to confirm compatibility with your specific system architecture.
Our Quality Assurance Process
At Konmask.com, every unit of the Westermo SDW-550EC is subject to a rigorous multi-stage sourcing and verification process:
- Authorized & Verified Supply Chain: We source exclusively from authorized distributors and verified industrial surplus channels with full traceability documentation.
- Physical Inspection: Each unit is inspected for label authenticity, housing integrity, connector condition, and firmware version consistency.
- Functional Testing: Where applicable, units undergo power-on and basic communication testing prior to dispatch.
- Documentation Package: CE declarations, original manufacturer datasheets, and test records are available upon request.
- Secure Packaging: Anti-static packaging with shock-absorbing materials ensures safe international transit.
How to Order
- Submit an Inquiry: Use the contact form on this page or email support@konmask.com with your required quantity and delivery timeline.
- Receive a Quotation: Our team will respond within 1 business day with pricing, lead time, and stock availability.
- Order Confirmation: Confirm your purchase order; we accept T/T bank transfer and other B2B payment methods.
- Shipping & Tracking: We ship worldwide via DHL, FedEx, and UPS with full tracking and export documentation.
- After-Sales Support: Our technical team remains available post-delivery for integration support and warranty queries.
Why Choose Konmask.com?
- Industrial Automation Specialists: We focus exclusively on industrial control and automation components — not a generalist marketplace.
- Global B2B Experience: Serving system integrators, OEMs, and maintenance teams across Europe, Asia, the Middle East, and the Americas.
- Fast Response: Dedicated account managers respond to all technical and commercial inquiries within 24 hours.
- Competitive Pricing: Direct relationships with distributors allow us to offer competitive pricing on both new and refurbished stock.
- Reliable Logistics: Proven export experience with full customs documentation, including commercial invoices, packing lists, and COO certificates.
Frequently Asked Questions
Q: Is the Westermo SDW-550EC still in production?
A: Product lifecycle status varies. Contact us at support@konmask.com for current stock availability and lead time information.
Q: Does the SDW-550EC support fiber optic uplinks?
A: The SDW-500 Series is designed to support SFP-based fiber modules. Please confirm the specific port configuration of the SDW-550EC with our technical team or the official Westermo datasheet.
Q: Can this switch be used outside of railway applications?
A: Yes. While EN 50155 certified for railway use, its rugged design makes it equally suitable for harsh industrial automation, utility, and transportation infrastructure environments.
Q: What is the warranty on units purchased from Konmask.com?
A: We offer a standard warranty on all units. Specific terms are provided at the time of quotation based on stock condition (new or refurbished).
Q: Can you provide a certificate of origin or customs documentation?
A: Yes. We provide full export documentation including commercial invoice, packing list, and certificate of origin for all international shipments.
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