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Industrial Ethernet Switch with 6 10/100BaseT(X) ports, 3 100BaseFX port, multi mode ST

MOXA Major Lines
Mfg Part Number:  EDS-309-3M-ST  
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Price: $647.66
In Stock: 6
No Sales Tax except these states
, PO and Wire.

Certifications: ATEXDNVEN 55032/EN 55024FCC Part 15BGLIEC 60945LVD(EN 60950-1)RoHSUL508UL508 CID2UL60950-1

The EDS-309 series includes 9-port Ethernet switches that provide an economical solution for your industrial Ethernet connection, and the built-in relay warning function alerts maintainers when power failures or port breaks occur. The switch has three multi-mode fiber port supports ST or SC connectors and distances up to 5 km. The EDS-309 Series includes 2 models: one with an operating temperature range of 0 to 60°C, and the other one with extended operating temperature range of -40 to 75°C. These 2 models are designed for standard and extended operating temperatures respectively, and go through a 100% burn-in test to ensure that they fulfill the special needs of industrial automation control.

High Performance Network Switching Technology
  • 10/100BaseT(X) (RJ45), 100BaseFX (SC/ST connector, Multi mode)
  • Broadcast storm protection
  • IEEE802.3/802.3u/802.3x support
  • Store and Forward switching process type
  • 10/100M, Full/Half-Duplex, MDI/MDI-X auto-sensing
Industrial-grade Reliability
  • Power failure, port break alarm by relay output
  • Redundant dual DC power inputs
Rugged Design
  • Operating temperature ranges from 0 to 60°C, or extended operating temperature from -40 to 75°C
  • IP30, rugged high-strength metal case
  • DIN-Rail or panel mounting ability
Recommended Accessories
  • DR Series DIN-Rail 24 VDC Power Supplies


IEEE802.3, 802.3u, 802.3x
Processing Type
Store and Forward
Flow Control
IEEE802.3x flow control, back pressure flow control

RJ45 ports
10/100BaseT(X) auto negotiation speed, F/H duplex mode, and auto MDI/MDI-X connection
Fiber Ports
100BaseFX ports (SC/ST connector)
LED Indicators
PWR1, PWR2, Fault, 10/100M (TP port), and 100M (Fiber port)
DIP Switch
Port break alarm mask
Alarm Contact
One relay output with current carrying capacity of 1A @ 24 VDC

 Optical Fiber
Multi mode: 0 to 5 km, 1300 nm (50/125 µm, 800 MHz*km)
Min. TX Output
Multi mode: -20 dBm
Max. TX Output
Multi mode: -14 dBm
RX Sensitivity
Multi mode: -34 to -30 dBm
Input Voltage
24 VDC (12 to 48 VDC), redundant inputs
Input Current (@ 24V)
Overload Current Protection
Removable 6-pin Terminal Block
Reverse Polarity Protection

IP30 protection, metal case
(W x H x D)
53.6 x 135 x 105 mm
2.11 x 5.31 x 4.13 in.
DIN-Rail or Wall Mounting (optional kit)

Operating Temperature
0 to 60°C (32 to 140°C)
-40 to 75°C (-40 to 167°C) for T models
Storage Temperature
-40 to 85°C (-40 to 185°F)
Ambient Relative Humidity
5 to 95% (non-condensing)
 Regulatory Approvals
UL508 (pending), UL60950-1, EN60950-1
Hazardous location
UL/cUL Class 1, Division 2, Groups A, B, C, and D
ATEX Class 1, Zone 2, EEx nC IIC (pending)
FCC Part 15, CISPR (EN55022) class A
EN61000-4-2 (ESD), Level 3
EN61000-4-3 (RS), Level 3
EN61000-4-4 (EFT), Level 3
EN61000-4-5 (Surge), Level 3
EN61000-4-6 (CS), Level 3
Free fall
5 years
Product Category
Product Category Unmanaged Switch
Dimensions: WxHxD (mm) 53.6mm x 135mm x 105mm
Mounting Din Rail
IP level IP30
Enclosure Metal
Data Rate and Number of Ports
Number of Ports 9
Fast Ethernet, 10/100 Mbps 6
Gigabit, 10/100/1000 Mbps -
Interface Type 10/100 Mbps RJ45, 100 Mbps Multi-mode ST
Fiber connector 3 Multi-mode ST
PoE -
M12 Connector -
Digital I/O/Relay -
Console -
Bypass -
Modular Design -
Available Modular -
Power Input Type Redundant DC/DC Terminal Block
Operating Supply Voltage 24 VDC
Power Consumption 0.13 A @ 24V
Operating Temperature 0C to 60C
Redundancy and Backup Options
Redundancy Technology Yes
Automatic Backup Configurator Yes
Certification -
UL 508 (Industrial Control) Yes
EN 50155 (Rail Industry) -
EN 50121-4 (Rail Industry) -
EN 50121-3-2 (Rail Industry) -
IEC 61850-3 (Power Industry) -
IEEE 1613 (Power Industry) -
IEEE 1588PTP (Power Industry) -
DNV.GL (Marine) -
ABS.LR.NK (Marine) -
C1D2 (Oil & Gas) Yes
ATEX (Oil & Gas) Yes
Network Management and Control
Layer Level Switching L2
Modbus/TCP -
Ethernet/IP -
IGMP Snooping/GMRP -
QoS -
VLAN 802.1Q -
IEEE 802.1X -
LACP (802.3ad) -
Port Lock -
IPv6 -


DIP Switches • Port break alarm mask
• Enable/disable broadcast storm protection (EDS-316)
Fiber Ports 100BaseFX ports (SC/ST connector)
LED Indicators PWR1, PWR2, FAULT, 10/100M (TP port), 100M (fiber port)
Alarm Contact 1 relay output with current carrying capacity of 1 A @ 24 VDC
RJ45 Ports 10/100BaseT(X) auto negotiation speed, Full/Half duplex mode, and auto MDI/MDI-X connection
Power Requirements
Overload Current Protection 1.6 A
Reverse Polarity Protection Present
Input Voltage 24 VDC (12 to 45 VDC), redundant dual inputs
Input Current 0.31 A @ 24 V
Connection 1 removable 6-pin terminal blocks
Standards IEEE 802.3 for 10BaseT
IEEE 802.3u for 100BaseT(X) and 100BaseFX
IEEE 802.3x for Flow Control
Flow Control IEEE 802.3x flow control, back pressure flow control
Processing Type Store and Forward
Environmental Limits
Operating Temperature Standard Models: 0 to 60°C (32 to 140°F)
Wide Temp. Models: -40 to 75°C (-40 to 167°F)
Storage Temperature -40 to 85°C (-40 to 185°F)
Ambient Relative Humidity 5 to 95% (non-condensing)
MTBF (mean time between failures)
Time 396,000 hrs
Database MIL-HDBK-217F, GB 25°C
Physical Characteristics
Weight 790 g
Dimensions 53.6 x 135 x 105 mm (2.11 x 5.31 x 4.13 in)
Installation DIN-Rail mounting, wall mounting (with optional kit)
Housing Metal, IP30 protection
Switch Properties
MAC Table Size 1 K (EDS-305/308/309), 4 K (EDS-316)
Packet Buffer Size n/a (EDS-305), 512 Kbit (EDS-308/309), 1.25 Mbit (EDS-316)
Standards and Certifications
EMI FCC Part 15 Subpart B Class A, EN 55022 Class A
Safety UL 508, UL 60950-1, CSA C22.2 No. 60950-1, EN 60950-1
Hazardous Location UL/cUL Class I Division 2 Groups A/B/C/D, ATEX Zone 2 Ex nC IIC (EDS-316 Series V2.0 pending)
Note Please check Moxa’s website for the most up-to-date certification status.
Shock IEC 60068-2-27
Vibration IEC 60068-2-6
EMS EN 61000-4-2 (ESD) Level 3, EN 61000-4-3 (RS) Level 3,
EN 61000-4-4 (EFT) Level 3, EN 61000-4-5 (Surge) Level 3,
EN 61000-4-6 (CS) (EDS-305/308: Level 2; EDS-309/316: Level 3)
Freefall IEC 60068-2-32
Marine DNV, GL
Warranty Period 5 years
Details See
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