Description
Core Product Summary (Brand / Model / Key Attributes)
The Moxa EDS-308-MM-SC is an unmanaged industrial Ethernet switch from the EDS-308 Series. It provides six 10/100BaseT(X) RJ45 ports and two 100BaseFX multi-mode ports with SC connectors.
The switch is designed for reliable operation in industrial environments. It features a relay output for power-failure and port-break alarms, redundant dual DC power inputs, store-and-forward switching, and a rugged metal IP30 housing. DIN-rail or wall mounting is supported. The standard operating temperature range is 0 to 60 °C (some documentation lists –10 to 60 °C).
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product type | Unmanaged industrial Ethernet switch |
| Series | EDS-308 |
| Copper ports | 6 × 10/100BaseT(X) RJ45 (auto-negotiation, full/half duplex, auto MDI/MDI-X) |
| Fiber ports | 2 × 100BaseFX multi-mode, SC connector |
| Switching method | Store-and-forward |
| MAC table size | 2 kbits |
| Packet buffer | 768 K |
| Alarm output | 1 relay contact, 1 A @ 24 VDC (power failure / port break) |
| Power input | Redundant dual inputs, 12/24/48 VDC (operating range 9.6–60 VDC) |
| Input current | 0.15 A @ 24 VDC |
| Housing | Metal, IP30 |
| Dimensions | 53.6 × 135 × 105 mm (2.11 × 5.31 × 4.13 in) |
| Weight | 790 g (1.75 lb) |
| Mounting | DIN-rail or wall (optional kit) |
| Operating temperature | 0 to 60 °C (standard model) |
Detailed Product Overview
The Moxa EDS-308-MM-SC belongs to the EDS-308 family of unmanaged 8-port industrial Ethernet switches. It is intended for applications that require simple, reliable copper-to-fiber connectivity without the complexity of managed features.
Six RJ45 ports support 10/100 Mbps auto-negotiation and auto MDI/MDI-X, allowing direct connection of PLCs, HMIs, sensors, or other Ethernet devices. The two multi-mode 100BaseFX SC fiber ports provide optical uplinks or long-distance links that are immune to electromagnetic interference. Fiber distance capability follows standard multi-mode 100BaseFX specifications (typically up to 2 km or 4–5 km depending on fiber type and power budget).
A built-in relay output can signal power failure or a port-break condition, enabling external alarm or PLC monitoring. DIP-switch configuration allows the port-break alarm function to be enabled or disabled. Broadcast storm protection is included to help maintain network stability under abnormal traffic conditions.
Power is supplied through redundant dual DC inputs (12/24/48 VDC nominal, 9.6–60 VDC operating range) with reverse-polarity and overload protection. The metal housing is rated IP30 and is suitable for DIN-rail mounting inside control cabinets or wall mounting with an optional kit. The compact form factor (53.6 × 135 × 105 mm) and low power consumption make the unit practical for space-constrained industrial installations.
The EDS-308 series is designed for harsh environments and carries industrial certifications appropriate for factory automation, process control, and transportation applications. A wide-temperature variant (EDS-308-MM-SC-T) is available for –40 to 75 °C operation.
Engineering Selection Highlights
- Six copper + two multi-mode SC fiber ports for mixed copper/fiber industrial networks.
- Unmanaged design for simple, plug-and-play deployment without configuration software.
- Relay output provides power-failure and port-break alarm signaling.
- Redundant dual 12/24/48 VDC inputs with wide operating voltage range (9.6–60 VDC).
- Rugged metal IP30 housing suitable for DIN-rail or wall mounting.
- Store-and-forward switching with 2 K MAC table and broadcast storm protection.
- Standard temperature range 0–60 °C; wide-temperature (-T) version available.
EDS-308-MM-SC
EDS-308-MM-SC
System Compatibility & Integration Requirements
| Item / Dependency | Verified Compatibility or Requirement | Practical Note |
|---|---|---|
| Network devices | 10/100 Mbps Ethernet devices | Auto-negotiation and auto MDI/MDI-X supported |
| Fiber | Multi-mode fiber with SC connectors | Standard 100BaseFX multi-mode |
| Power supply | 12/24/48 VDC redundant dual inputs | Operating range 9.6–60 VDC |
| Alarm monitoring | External PLC or alarm system | Relay contact rated 1 A @ 24 VDC |
| Mounting | DIN-rail or wall | Optional wall-mount kit available |
| Environment | Industrial control cabinets | IP30 metal housing |
Dimensions, Mounting & Connection Notes
The switch measures 53.6 × 135 × 105 mm and weighs approximately 790 g. It is designed for standard 35 mm DIN-rail mounting; an optional kit enables wall mounting. Power and alarm wiring terminate on a removable 6-contact terminal block. RJ45 ports accept standard Category 5 or better cabling; fiber ports use SC multi-mode connectors. Ensure adequate ventilation and observe the specified temperature range for reliable operation.
FAQ
What is the Moxa -MM-SC?
It is an unmanaged industrial Ethernet switch with six 10/100BaseT(X) RJ45 ports and two multi-mode 100BaseFX SC fiber ports.
How many fiber ports does it have?
Two multi-mode 100BaseFX ports with SC connectors.
Does it require configuration software?
No. It is an unmanaged switch and operates in plug-and-play mode.
What power supply does it use?
Redundant dual 12/24/48 VDC inputs (operating range 9.6–60 VDC).
What is the operating temperature range?
0 to 60 °C for the standard EDS-308-MM-SC model. A –40 to 75 °C wide-temperature version (EDS-308-MM-SC-T) is also available.
Does it provide alarm outputs?
Yes. A relay contact signals power failure or port-break conditions (1 A @ 24 VDC).
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