Description
Core Product Summary
The Moxa EDS-408A-MM-SC is an entry-level Layer 2 managed industrial Ethernet switch designed for industrial network infrastructure. It provides six 10/100BaseT(X) copper Ethernet ports and two 100BaseFX multimode fiber ports with SC connectors, enabling copper-connected devices and fiber network segments to communicate over the same switching platform.
The switch supports network management functions including VLANs, Quality of Service (QoS), port mirroring, SNMP and Spanning Tree Protocol features. Its Turbo Ring functionality supports industrial Ethernet ring configurations, subject to the network topology and correct configuration.
The unit accepts redundant DC power inputs and supports DIN-rail mounting. Its standard operating temperature range is -10 to 60°C; the wide-temperature EDS-408A-MM-SC-T is a distinct variant and should not be confused with this model.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Moxa |
| Model | EDS-408A-MM-SC |
| Product type | Layer 2 managed industrial Ethernet switch |
| Total Ethernet ports | 8 |
| Copper ports | 6 × 10/100BaseT(X), RJ45 |
| Fiber ports | 2 × 100BaseFX, multimode, SC connectors |
| Ethernet standards | IEEE 802.3, IEEE 802.3u |
| Flow control | IEEE 802.3x |
| Spanning Tree | STP and RSTP support |
| VLAN | IEEE 802.1Q VLAN tagging |
| Maximum VLANs | 64 |
| VLAN ID range | 1–4094 |
| MAC address table | 8K entries |
| Packet buffer | 1 Mbit |
| Priority queues | 4 |
| Power input | Redundant dual 12/24/48 V DC inputs |
| Operating voltage | 9.6–60 V DC |
| Alarm output | Relay output, 1 A at 24 V DC |
| Console interface | RS-232 through 10-pin RJ45 connector |
| Housing | Metal |
| Protection rating | IP30 |
| Dimensions | 53.6 × 135 × 105 mm |
| Weight | Approximately 650 g |
| Mounting | DIN rail; wall mounting with optional kit |
| Operating temperature | -10 to 60°C |
| Storage temperature | -40 to 85°C |
| Relative humidity | 5–95%, non-condensing |
Specifications are for the EDS-408A-MM-SC model. Confirm the product label and applicable datasheet when specifying a replacement.
Engineering Selection Highlights
- Copper and fiber connectivity: Six RJ45 copper ports and two multimode SC fiber ports support mixed-media industrial networks.
- Layer 2 management: VLANs, QoS, port mirroring and network monitoring functions support segmentation, traffic prioritization and troubleshooting.
- Industrial ring networking: Turbo Ring features can support network redundancy when configured according to the network design.
- Redundant power inputs: Dual DC power inputs help support power redundancy when supplied from appropriately independent sources.
- Relay alarm output: The alarm relay supports integration with compatible external alarm circuits within its rated limits.
- Industrial mounting: The metal housing and DIN-rail mounting support control cabinets and industrial equipment enclosures.
- Variant-specific selection: The MM-SC suffix specifies multimode fiber with SC connectors. Single-mode and ST-connector versions are different models.
System Compatibility & Integration Requirements
The EDS-408A-MM-SC is intended for industrial Ethernet networks using standard Ethernet communication. Its fiber links and management features must be matched to the connected devices and network architecture.
| Integration item | Requirement |
|---|---|
| Copper network | Connect compatible 10/100 Mbps Ethernet devices through RJ45 ports |
| Fiber network | Use multimode 100BaseFX fiber with SC connectors |
| Fiber distance | Typical listed distance is up to 4 km on OM1 fiber and up to 5 km on specified 50/125 μm fiber; validate cable grade and link budget |
| Network redundancy | Configure Turbo Ring or spanning-tree features to match the topology |
| VLAN and QoS | Set management parameters to match the wider network configuration |
| Power supply | Provide 12/24/48 V DC nominal input within the 9.6–60 V DC operating range |
| Alarm relay | Keep the external alarm circuit within the 1 A at 24 V DC rating |
| Management access | Use the supported web management and console interfaces |
| Environmental conditions | Keep ambient temperature and humidity within the model’s specified limits |
Fiber distance depends on cable specifications, connector losses, optical link budget and installation conditions. Do not treat typical distance figures as guaranteed values for every fiber installation.
EDS-408A-MM-SC
EDS-408A-MM-SC
EDS-408A-MM-SC
Dimensions, Mounting & Connection Notes
The EDS-408A-MM-SC has a metal enclosure measuring approximately 53.6 × 135 × 105 mm and weighs approximately 650 g. It supports DIN-rail mounting, with wall mounting available through an optional kit.
Before installation:
- Check enclosure clearance and DIN-rail compatibility.
- Verify the polarity and voltage of both DC power inputs.
- Confirm multimode fiber type and SC connector compatibility.
- Clean and inspect fiber connectors before mating them.
- Verify the console pinout before connecting serial equipment.
- Configure VLANs, ring redundancy and alarm behavior before deployment.
- Confirm that cabinet temperature and humidity remain within specification.
Detailed Product Overview
Mixed copper and fiber switching
The EDS-408A-MM-SC combines six copper Ethernet ports with two multimode fiber ports. This arrangement allows local Ethernet devices to connect over copper while linking the switch to other network segments through fiber. Fiber can provide electrical isolation between network segments and help span longer distances than typical copper Ethernet links, subject to the installed cabling and link budget.
Layer 2 network management
The switch supports VLAN tagging, QoS, port mirroring, SNMP and spanning-tree functions. These features help network engineers separate traffic, prioritize selected packets, monitor network behavior and diagnose connectivity problems. Exact behavior depends on firmware, management configuration and network topology.
Ring redundancy and network resilience
Turbo Ring functionality supports industrial Ethernet ring arrangements when correctly configured. Redundancy design should account for ring roles, recovery behavior, connected equipment and any other spanning-tree mechanisms in the network. Avoid creating unintended loops through overlapping redundancy configurations.
Power and alarm integration
Redundant DC power inputs allow the switch to be supplied from separate power sources where the system design supports this arrangement. The relay alarm output can signal supported fault conditions to an external monitoring system, provided the alarm configuration and external circuit ratings are correct.
Maintenance and replacement
Before replacing an installed unit, verify the complete model suffix, port arrangement, fiber type, power requirements and management configuration. Save the existing network configuration where possible and validate port links, VLAN membership, ring status and alarm behavior after replacement.
Applications & System Role
The Moxa EDS-408A-MM-SC is suitable for industrial Ethernet infrastructure where managed switching and fiber connectivity are required.
Typical applications include:
- Factory automation and machine networks.
- PLC, HMI and industrial computer connectivity.
- Fiber backbone connections between control cabinets.
- Industrial monitoring and supervisory networks.
- Network segmentation using VLANs.
- Redundant Ethernet topologies in industrial environments.
- Marine or transportation equipment where the specific installation approvals and environmental requirements are satisfied.
The switch provides network connectivity and management; it does not perform PLC control logic or replace application-level controllers.
Frequently Asked Questions
1. What is the Moxa EDS-408A-MM-SC?
It is a Layer 2 managed industrial Ethernet switch with six 10/100BaseT(X) copper ports and two multimode 100BaseFX fiber ports with SC connectors.
2. Does the EDS-408A-MM-SC support multimode fiber?
Yes. Both fiber ports use 100BaseFX multimode optics with SC connectors. It is not the same variant as the single-mode SS-SC model.
3. What is the maximum fiber transmission distance?
Moxa lists typical distances of 4 km for OM1 fiber and 5 km for specified 50/125 μm fiber. Actual achievable distance depends on the cable and optical link budget.
4. What power supply does it require?
It supports redundant dual DC inputs with nominal 12, 24 or 48 V DC supplies and an operating voltage range of 9.6–60 V DC. Follow the wiring and protection requirements in the installation manual.
5. What is the operating temperature range?
The standard EDS-408A-MM-SC is specified for -10 to 60°C. The EDS-408A-MM-SC-T is the wide-temperature variant, specified for -40 to 75°C.
6. Does the switch support network redundancy?
Yes. It supports Turbo Ring and spanning-tree features. Redundancy must be configured to match the intended network topology.
7. Can it be used in marine installations?
The EDS-408A series includes maritime approvals for several models, and Moxa lists maritime approvals for the MM-SC variant. Confirm the exact model’s current certification and the vessel or project requirements before installation.
8. What should be checked before ordering a replacement?
Confirm the exact model suffix, copper and fiber port counts, multimode fiber compatibility, connector type, power range, temperature rating and existing management configuration.
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