Moxa EDS-308 series industrial Ethernet switch

Moxa EDS-308 series industrial Ethernet switch

Product core positioning and application scenarios

The EDS-308 series is an 8-port unmanaged industrial Ethernet switch launched by Moxa, positioned as a low-cost, high reliability network connection solution for industrial scenarios. Its design focuses on the stringent requirements of industrial environments, with features such as wide temperature adaptation, fault alarm, anti-interference, etc. It can achieve Ethernet data transmission for industrial equipment (such as PLC, sensors, frequency converters, cameras), and typical application scenarios include:

Industrial automation: data exchange between equipment in manufacturing production lines and smart factories;

Energy and infrastructure: equipment networking in power substations and petrochemical parks (compatible with Class 1 Div. 2/ATEX Zone 2 hazardous areas);

Transportation and Logistics: Network Connection of Rail Transit Signal Systems and Port Terminal Equipment;

Adverse environmental scenarios: industrial sites with high and low temperatures (-40~75 ℃), high electromagnetic interference, and frequent vibrations.

Product model classification and core differences

EDS-308 series is divided into several sub models according to "port type" and "operating temperature range" to meet different transmission media (copper/optical fiber) and environmental requirements. The core categories are as follows:

Model Category Key Configuration Operating Temperature Applicable Scenarios

Pure copper cable type (EDS-308/308-T) with 8 10/100BaseT (X) RJ45 ports EDS-308: -10~60 ℃; EDS-308-T: Short distance (within 100 meters) equipment connection at -40~75 ℃, such as networking of sensors and PLCs in the workshop

Single multimode fiber type (EDS-308-M-SC/MM-SC/MM-ST series) - M-SC: 7 RJ45+1 multimode SC fiber ports

-MM-SC: 6 RJ45+2 multimode SC fiber ports

-MM-ST: 6 RJ45+2 multimode ST fiber ports standard version: -10~60 ℃; -T suffix version: -40~75 ℃ medium to short distance (4-5 kilometers) fiber optic transmission, such as equipment networking across workshops and factories (multi-mode fiber optic supports 50/125 μ m cables)

Single mode fiber type (EDS-308-S-C/SS-SC series) - S-SC: 7 RJ45+1 single-mode SC fiber ports

-SS-SC: 6 RJ45+2 single-mode SC fiber ports standard version: -10~60 ℃; -T suffix version: -40~75 ℃ long-distance (40 kilometers) fiber optic transmission, such as equipment networking across factory areas and long-distance substations (single-mode fiber supports G.652 standard)

Ultra long single-mode fiber type (EDS-308-SC-80/SS-SC-80) - S-SC-80: 7 RJ45+1 single-mode SC fiber ports (80 kilometers)

-SS-SC-80: 6 RJ45+2 single-mode SC fiber ports (80 kilometers) -10~60 ℃ ultra long distance (80 kilometers) transmission, such as networking in large-scale scenarios such as oil fields and wind farms (using 1550nm wavelength, low dispersion)

Core technical specifications and performance advantages

（1） Hardware and port characteristics

Category specific parameters, technical advantages

Port configuration: 10/100BaseT (X) RJ45 ports: 6-8 (depending on model); 100BaseFX fiber ports: 1-2 (depending on model) support automatic negotiation (rate/duplex mode), automatic MDI/MDI-X (no need for crossover), compatible with devices of different rates (10Mbps/100Mbps)

Fiber optic transmission parameters - multimode (MM): wavelength 1300nm, transmission distance 4-5 kilometers, supports OM1/50/125 μ m cables

-Single mode (SM): wavelength 1310nm (40 kilometers)/1550nm (80 kilometers), supports G.652 cable coverage for medium to long distance transmission needs, and fiber optic ports have dust caps to reduce dust impact

Switching performance - MAC address table: 2048 entries

-Package buffer: 768KB

-Forwarding method: Store and Forward to avoid residual frame forwarding, reduce network congestion, and support simultaneous networking of multiple devices (2048 device address records)

Power Characteristics - Input Voltage: 9.6~60V DC (Redundant Dual Input)

-Current: 0.07~ 0.15A@24V DC (by model)

-Protection: Reverse polarity protection, overcurrent protection, wide voltage input suitable for unstable power supply in industrial sites, dual redundant input+fault protection to enhance power supply reliability

（2） Industrial grade reliability design

environmental adaptability

Temperature: Standard version -10~60 ℃, wide temperature version (- T suffix) -40~75 ℃, suitable for high and low temperature industrial scenarios (such as outdoor in winter in the north and workshop in summer in the south);

Humidity: 5%~95% (no condensation), suitable for humid environments (such as food processing and water treatment workshops);

Protection level: IP30 (metal shell), dustproof and finger proof, suitable for installation inside control cabinets;

anti-interference:

Electrostatic discharge (ESD): Contact with 6kV, air 8kV (IEC 61000-4-2);

Radio frequency interference (RS): 80MHz~1GHz, 20V/m (IEC 61000-4-3);

Surge: 2kV at the power supply end and 2kV at the signal end (IEC 61000-4-5).

Fault alarm and protection

Relay alarm: 1 relay output（ 1A@24VDC ）, can trigger "power failure" and "port disconnection" alarms, and promptly notify operation and maintenance personnel;

Broadcast storm protection: Suppress network broadcast storms and prevent single device failures from causing the entire network to crash;

100% aging test: Full process aging test before leaving the factory to ensure long-term stable operation in industrial scenarios.

Compatible with hazardous areas

Certification: ATEX Zone 2, Class 1 Div. 2, can be used in flammable and explosive environments such as petrochemicals and gas processing to reduce safety risks.

Installation and Accessories

（1） Installation method

DIN rail installation: standard DIN rail buckle, compatible with 35mm standard rail, easy to install densely inside the control cabinet;

Wall mounted installation: Optional wall mounted kit (WK-46) is required, including 2 mounting plates and 8 screws, suitable for scenarios without rails;

Size and weight: 53.6 × 135 × 105mm (width × length × height), weight 790g, compact size, saves installation space.

（2） Recommended accessories

Accessory type, model, specification, and purpose

Power adapter DR-120-24 120W/2.5A, input 88~132VAC/176~264VAC/248~370VDC to provide stable 24VDC power for the switch, compatible with a wide range of input voltages

DR-75-24 75W/3.2A， Input 85~264VAC/120~370VDC medium power supply, suitable for single switch power supply

MDR-60-24 60W/2.5A， Input 85~264VAC/120~370VDC, -20~70 ℃ wide temperature power supply, suitable for harsh temperature environments

Installation kit WK-46 includes 2 mounting plates and 8 screws (46.5 × 66.8 × 1mm) for wall mounted installation of switches, suitable for scenarios without DIN rails

Compliance certification and quality assurance

（1） Core certification

Safety certifications: UL 508 (Industrial Control Equipment), UL 60950-1, CSA C22.2 No. 60950-1 (Information Technology Equipment Safety);

Electromagnetic compatibility (EMC): CISPR 32, FCC Part 15B Class A, EN 55032/24;

Environmental certification: ATEX Zone 2, Class 1 Div. 2 (hazardous areas), IEC 60068 (environmental testing).

（2） Warranty and Reliability

Warranty period: 5-year ultra long warranty, covering the repair of core product faults;

Mean Time Between Failures (MTBF): 255528 hours (according to MIL-HDBK-217F standard), approximately 29 years, with high long-term operational reliability.