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MOXA Industrial Unmanaged Ethernet Switch with 8 ports

MOXA Industrial Unmanaged Ethernet Switch with 8 ports

Part # EDS-308. Category: . Tags: , , , .


MOXA Industrial Unmanaged Ethernet Switch with 8 ports

The EDS308 is an 8-port Ethernet switch that provide an economical solution for your industrial Ethernet connections. The built-in relay warning function alerts network engineers when power failures or port breaks occur, and the switches are designed for harsh industrial environments, such as in hazardous locations (Class I, Div. 2/ATEX). The switches comply with FCC, TÜV, UL, and CE standards, and come in two model types. Standard operating temperature range models (0 to 60°C) and wide operating temperature range models (-40 to 75°C). Both models undergo a 100% burn-in test to ensure that they fulfill the special needs of industrial automation control applications. The EDS-308 switch can be installed easily on a DIN-rail or in a distribution box.

Features and Benefits

  • Relay output warning for power failure and port break alarm
  • Broadcast storm protection
  • Transparent transmission of VLAN tagged packets
  • -40 to 75°C operating temperature range (T models)


Standards IEEE 802.3 for 10BaseT
IEEE 802.3u for 100BaseT(X) and 100BaseFX
IEEE 802.3x for Flow Control
Processing Type Store and Forward
Flow Control IEEE 802.3x flow control, back pressure flow control

Switch Properties

MAC Table Size 1 K
Packet Buffer Size n/a (EDS-305), 512 kbit (EDS-308)


Fiber Ports 100BaseFX ports (SC/ST connector)
RJ45 Ports 10/100BaseT(X) auto negotiation speed, Full/Half duplex mode, and auto MDI/MDI-X connection
DIP Switches Port break alarm mask
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

Optical Fiber

Multi-mode Single-mode Single-mode, 80km
Wavelength 1300 nm 1310 nm 1550 nm
Max. TX -10 dBm 0 dBm 0 dBm
Min. TX -20 dBm -5 dBm -5 dBm
RX Sensitivity -32 dBm -34 dBm -34 dBm
Link Budget 12 dB 29 dB 29 dB
Typical Distance 5 kma
4 kmb
40 kmc 80kmd
Saturation -6 dBm -3 dBm -3 dBm


a. 50/125 µm, 800 MHz*km fiber optic cable
b. 62.5/125 µm, 500 MHz*km fiber optic cable
c. 9/125 µm single-mode fiber optic cable
d. 9/125 µm single-mode fiber optic cable (80 km)

Power Requirements

Input Voltage 24 VDC (12 to 48 VDC), redundant dual inputs
Input Current EDS-305: 0.13 A @ 24 V
EDS-305-M/S: 0.17 A @ 24 V
EDS-308: 0.13 A @ 24 V
EDS-308-M/S: 0.21 A @ 24 V
EDS-308-MM/SS: 0.26 A @ 24 V
Overload Current Protection EDS-305, EDS-305-M, EDS-305-S, EDS-308: 1.1 A
EDS-308-M/S/MM/SS: 1.6 A
Connection 1 removable 6-pin terminal blocks
Reverse Polarity Protection Present

Physical Characteristics

Housing Metal, IP30 protection
Dimensions 53.6 x 135 x 105 mm (2.11 x 5.31 x 4.13 in)
Weight 790 g
Installation DIN-rail mounting, wall mounting (with optional kit)

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)

Standards and Certifications

Safety EDS-305 Series: UL 508, UL 60950-1, CSA C22.2 No. 60950-1
EDS-308: UL 508, UL 60950-1, CSA C22.2 No. 60950-1, EN 60950-1
Hazardous Location UL/cUL Class 1 Division 2 Groups A/B/C/D,
ATEX Zone 2 Ex nA nC IIC T4 Gc
EMI FCC Part 15 Subpart B Class A, EN 55022 Class A
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)
Marine DNV, GL
Shock IEC 60068-2-27
Freefall IEC 60068-2-32
Vibration IEC 60068-2-6
Note Please check Moxa’s website for the most up-to-date certification status.

MTBF (mean time between failures)

Time EDS-305 Series: 422,000 hrs
EDS-308 Series: 255,000 hrs
Database MIL-HDBK-217F, GB 25°C


Warranty Period 5 years
Details See www.moxa.com/warranty