Overview

The MOXA EDS-308-MM-SC is an industrial-grade unmanaged Ethernet switch designed for stable, cost-effective networking in automation, transportation, and energy systems. It combines rugged hardware, dual-power input support, and relay contact alarms for proactive fault monitoring. Its compact DIN-rail form factor fits easily into control cabinets, while mixed copper/fiber connectivity enables flexible long-distance network extension.
The switch also complies with major industrial certifications (CE, FCC, UL, ATEX Zone 2, Class 1 Div. 2), making it suitable for deployments in harsh and hazardous environments.

Technical Specifications

Application

The EDS-308-MM-SC is widely used in distributed industrial networks where fiber is required for long distances and copper is needed for local devices. Key use cases include:

• Factory Automation – Linking PLCs, HMIs, drives, and sensors.

• Transportation Systems – Signaling, passenger information, and surveillance networks.

• Energy & Utilities – Substation networking and DCS/SCADA segment distribution.

• Oil & Gas – Hazardous environments requiring ATEX Zone 2 compliance.

• Smart Infrastructure – Mixed copper-fiber networks for building management systems.

The onboard relay alarm helps maintenance teams quickly identify power loss or port failures, improving uptime in critical installations.

FAQ

Q1: Is the EDS-308-MM-SC managed or unmanaged?
A: It is unmanaged, offering simple plug-and-play operation.

Q2: Can it operate in extreme temperatures?
A: Yes—for harsh environments, use the -T variant (-40°C to +75°C).

Q3: What fiber type is supported?
A: Multi-mode fiber, SC connectors, 100BaseFX.

Q4: How does the relay alarm help?
A: It triggers alerts for power or port faults, enabling rapid maintenance response.

Q5: Is it suitable for hazardous areas?
A: Yes—certified for ATEX Zone 2 and Class 1 Div. 2 locations.