General
Number of RJ45 ports	5
Number of fibre optic connections	3
VLAN support
IGMP Snooping
Bandwidth management
RMON

The Moxa EDS-408A-3S-SC-T is an industrial 8-port managed Ethernet switch designed for use in demanding environments such as power supply, transportation, rail, and automation. The device features five RJ45 ports (10/100BaseT(X)) and three fiber optic connections (100BaseFX, Single-Mode SC), making it suitable for both copper-based and optical network connections. The construction accounts for extreme operating conditions, particularly through an extended temperature range of -40 to 75 °C, enabling use in outdoor environments or industrial facilities with high thermal loads.

Applications

The switch is specifically designed for industrial networks requiring high reliability and stability. It is suitable for applications in power supply, rail transport, automation technology, and marine environments. Certification according to UL 508, EN 50121-4, and NEMA TS2 confirms suitability for these areas. The robust design and support for protocols such as Modbus TCP and EtherNet/IP make it a suitable component in modern automation networks.

Functions and Features in Detail

The EDS-408A-3S-SC-T offers advanced networking functions such as VLANs (802.1Q), port-based VLANs, GVRP, and IGMP Snooping, enabling targeted control and segmentation of data traffic. QoS functions allow prioritization of data streams to support critical applications such as control or monitoring systems. Bandwidth management and Port Mirroring expand the possibilities for network monitoring and analysis. Management is performed via web browser, CLI, Telnet, serial console, or through an ABC-01 module, providing flexible access options for maintenance and configuration.

Technology Explained Simply

The RJ45 ports support Auto-Negotiation, Full- and Half-Duplex mode, as well as MDI/MDI-X, enabling flexible adaptation to various network cables and devices. The three Single-Mode SC fiber optic connections (100BaseFX) are designed for transmission over longer distances, with optical transmission offering lower signal loss and higher immunity to interference compared to copper cables. Power supply is via 9.6–60 VDC, with integrated redundant power supply, overcurrent protection, and reverse polarity protection to enhance operational safety. The mean time between failures (MTBF) exceeds 1,253,000 hours, indicating high reliability.

Compatibility and Accessories

The switch supports redundant network architectures via Turbo Ring and Turbo Chain with a recovery time of under 20 ms, supplemented by RSTP and STP. These functions ensure rapid recovery in case of network failures. Protocol support for Modbus TCP and EtherNet/IP enables integration into existing automation systems. Management via SNMPv1/v2c/v3 and RMON supports network monitoring. Security features such as HTTPS, SSH, Port Lock, and NTP authentication protect configuration and data traffic.

Mounting and Installation

The device features an IP30 metal housing that effectively resists mechanical stress and dust. It is designed for mounting on DIN rails and can optionally be wall-mounted. Installation is performed by connecting network cables to the RJ45 or fiber optic ports and supplying power via the DC connector. Configuration is carried out using the available management options.

Operational Advantages

The EDS-408A-3S-SC-T offers high operational reliability through redundant power supply, extended temperature range, and robust construction. Integrated redundancy functions such as Turbo Ring and Turbo Chain ensure rapid network recovery. Support for VLANs, QoS, and Port Mirroring enables precise network control. Certification according to relevant industry standards and the long MTBF underscore reliability for critical applications. Management via multiple interfaces provides flexibility during commissioning and maintenance.