Description

The Westermo SDW-500 series (SDW-550) industrial Ethernet switch
The Westermo SDW-500 (commonly referred to as SDW-550) is a non-managed 5-port industrial Ethernet switch produced by Sweden’s Westermo. It is specifically designed for harsh industrial environments and supports both copper cable/fiber optic hybrid ports. It has been discontinued and is a mainstream model for high-reliability access to on-site networks and fiber optic extension.

Core Specifications
Brand: Westermo (Sweden)
Model: SDW-500 Series (Typical: SDW-550 Full Electrical Port)
Ports:
SDW-550: 5×10/100Base-TX (RJ45)
SDW-541: 4×TX + 1×FX (Fiber Optic)
SDW-532: 3×TX + 2×FX (Fiber Optic)
Speed: 10/100 Mbps, Auto Negotiation / Manual DIP Configuration
Power Supply: 12–48 VDC (Range 9.6–57.6 VDC), Dual Power Redundancy, Reverse Polarity Protection
Power Consumption: Approximately 320 mA @12 VDC (SDW-550)
Isolation: TX Port 2.8 kV DC Isolation, Anti-ground Loop Interference
Temperature: -25°C ~ +70°C (Wide Temperature)
Size / Weight: 35×121×119 mm / 0.2 kg, DIN Rail Installation
Protection: IP20, LED Diagnostic Indicator Light
Status: Out of Production, Can be Replaced with Westermo Successor Series

Key Features
Plug-and-Play: Default Auto Negotiation (Speed / Duplex / MDI-X), No Configuration Required; Supports DIP Switch for Manual Port Parameter Locking.
Strong Anti-Interference: Port Isolation + Wide Temperature + Redundant Power Supply, Suitable for Factory, Power, Transportation, etc. Strong Interference Scenarios.
Flexible Networking: Multiple Models Available, Supports Electrical Ports / Fiber Optic Mixed, Can Be Used as Switch or Fiber Transceiver (Media Converter).
Operational Friendly: Port Mirroring, LED Status Indicators, Facilitate Fault Troubleshooting.

Typical Applications
Industrial Automation: PLC, DCS, SCADA Network Access
Power/Energy: Substations, Wind Power / Solar Energy Field Communication
Transportation / Municipalities: Rail Transit, Water Treatment, Intelligent Transportation
Fiber Optic Extension: Long Distance / Strong Interference Environment Network Expansion