Overview

The WESTERMO SDW-550 is a rugged, unmanaged 5-port Industrial Ethernet switch designed for industrial, transportation, and marine applications. Its plug-and-play nature eliminates configuration complexity, making it ideal for field device networks, decentralized systems, and situations requiring simple, reliable connectivity.

The SDW-550 features dual redundant power inputs and total galvanic isolation between ports and chassis, protecting against ground loops, surges, and electrical noise. While the SDW-550 is considered a legacy model, the SDW-550-T5G is the recommended replacement, offering Gigabit speeds and extended temperature tolerance.

Technical Data

Key Features

• Redundant Power Inputs: Automatic failover ensures continuous operation.

• Galvanic Isolation: Prevents ground loops and protects connected equipment.

• Unmanaged Operation: Plug-and-play simplicity with no setup required.

• Legacy Device Support: DIP switches allow manual locking of speed/duplex for older devices.

• Diagnostics: Port mirroring simplifies monitoring and troubleshooting with analyzers.

• Industrial Robustness: Withstands vibration, electrical noise, and temperature extremes.

Typical Applications

• Factory Automation: Connects PLCs, HMIs, and sensors in electrically noisy environments.

• Transportation Networks: Provides connectivity on buses, rail vehicles, and mobile systems (with optional E-Mark certification).

• Decentralized Networks: Extends Ethernet connectivity in distribution, security, and utility systems.

FAQ

Q1: Why choose the SDW-550 over a managed switch?
A1: It offers simplicity, cost-effectiveness, and minimal maintenance. Ideal for small clusters or network edges where advanced features like VLANs, QoS, or SNMP are unnecessary.

Q2: What is the difference between SDW-550 and SDW-550-T5G?
A2: The T5G supports Gigabit Ethernet (10/100/1000 Mbps), wider temperature range (down to -40°C), and is the recommended current replacement for legacy SDW-550 systems.

Q3: What does IP21 protection mean?
A3: The switch is protected against finger contact (IP2X) and vertically falling water drops (IPX1), suitable for mounting in enclosures with minor moisture or condensation.