Description
WESTERMO SDW-550 Ethernet Switch
Product Dimensions:
The Westermo SDW-550 is an industrial-grade unmanaged Ethernet switch designed for harsh environments where reliability is non-negotiable. It is a “plug-and-forget” solution, meaning it requires no configuration to get your network up and running.
## Product Overview
The SDW-550 features five 10/100 Base-TX ports housed in a rugged DIN-rail metal enclosure. It is specifically engineered to handle industrial communication challenges, such as electromagnetic interference (EMI), extreme temperatures, and vibration.
## Technical Specifications
| Feature | Specification |
| Interface | 5 x RJ-45, 10/100 Mbit/s |
| Operating Voltage | 12 to 48 VDC (Dual power inputs) |
| Operating Temp | -25°C to +70°C (-13°F to +158°F) |
| Enclosure Rating | IP21, Full Metal Housing |
| Mounting | 35mm DIN-rail |
| MTBF | 1,100,000 hours (MIL-HDBK-217F) |
| Diagnostic LEDs | Power, Fault, Speed, and Link/Activity |
## Key Advantages
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Industrial Durability: Unlike commercial switches, the SDW-550 uses high-quality components to ensure a massive Mean Time Between Failures (MTBF).
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Redundant Power: It supports dual power feeds. If one power supply fails, the unit continues to operate seamlessly, and a fault contact can trigger an external alarm.
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Network Performance: It supports Auto MDI/MDI-X (automatic cable sensing) and Flow Control, ensuring stable data transmission even under heavy loads.
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Legacy Support: It is designed to be transparent to all standard industrial protocols, including PROFINET, Modbus/TCP, and EtherNet/IP.
## Important Considerations (Usage Notes)
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Environment: While the unit is rugged, ensure there is sufficient airflow when mounting multiple units side-by-side on a DIN rail to maintain the +70°C rating.
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Cabling: Use high-quality shielded twisted pair (STP) cables in high-interference environments to maintain signal integrity.
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Grounding: Always ensure the functional earth (FE) point is properly connected to the DIN rail or ground bus to protect against surges.
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Unmanaged Nature: Note that this is an unmanaged switch. If you require VLANs, IGMP snooping, or SNMP monitoring, you would need to look at Westermo’s Lynx or RedFox series.
## Product Applications
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Factory Automation: Connecting PLCs, HMIs, and I/O modules on the shop floor.
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Infrastructure: Monitoring systems for water treatment, power substations, and traffic control.
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Oil & Gas: Reliable data backhaul in remote locations with wide temperature swings.
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Maritime: Often used in engine rooms or bridge systems due to its high vibration resistance.
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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