EDS-309 Series
9-port unmanaged Ethernet switches

Features and Benefits
- Relay output warning for power failure and port break alarm
- Broadcast storm protection
- -40 to 75°C wide operating temperature range (-T models)
Certifications
- DNV
- ATEX
- CE
- FCC
Introduction
The EDS-309 Ethernet switches provide an economical solution for your industrial Ethernet connections. These 9-port switches come with a built-in relay warning function that alerts network engineers when power failures or port breaks occur. In addition, the switches are designed for harsh industrial environments, such as the hazardous locations defined by the Class 1 Div. 2 and ATEX Zone 2 standards. The switches comply with FCC, UL, and CE standards and support either a standard operating temperature range of -10 to 60°C or a wide operating temperature range of -40 to 75°C. All switches in the series undergo a 100% burn-in test to ensure that they fulfill the special needs of industrial automation control applications. The EDS-309 switches can be installed easily on a DIN rail or in a distribution box.
Models in this series (4)
| — | EDS-309-3M-SC | EDS-309-3M-SC-T | EDS-309-3M-ST | EDS-309-3M-ST-T |
| 10/100BaseT(X) Ports RJ45 Connector | 6 | 6 | 6 | 6 |
| 100BaseFX Ports Multi-Mode, SC Connector | 3 | 3 | – | – |
| 100BaseFX Ports Multi-Mode, ST Connector | – | – | 3 | 3 |
| Operating Temp. | -10 to 60°C | -40 to 75°C | -10 to 60°C | -40 to 75°C |
| — | Add to Quote View Bag Buy from distributors (for USA only) | Add to Quote View Bag Buy from distributors (for USA only) | Add to Quote View Bag Buy from distributors (for USA only) | Add to Quote View Bag Buy from distributors (for USA only) |
Specifications
Shown for EDS-309-3M-SC. Per-model differences are listed in the selection grid above.
Input/Output Interface
- Alarm Contact Channels
- 1 relay output with current carrying capacity of 1 A @ 24 VDC
Ethernet Interface
- 10/100BaseT(X) Ports (RJ45 connector)
- 6 Auto negotiation speed Full/Half duplex mode Auto MDI/MDI-X connection
- 100BaseFX Ports (multi-mode SC connector)
- 3
- Standards
- IEEE 802.3 for 10BaseT IEEE 802.3u for 100BaseT(X) and 100BaseFX IEEE 802.3x for flow control
Switch Properties
- MAC Table Size
- 1 K
- Packet Buffer Size
- 512 kbits
- Processing Type
- Store and Forward
DIP Switch Configuration
- Ethernet Interface
- Port break alarm
Power Parameters
- Input Current
- 0.26 A @ 24 VDC
- Connection
- 1 removable 6-contact terminal block(s)
- Operating Voltage
- 9.6 to 60 VDC
- Input Voltage
- Redundant dual inputs 12/24/48 VDC
- Reverse Polarity Protection
- Supported
- Overload Current Protection
- Supported
Physical Characteristics
- Housing
- Metal
- IP Rating
- IP30
- Dimensions
- 53.6 x 135 x 105 mm (2.11 x 5.31 x 4.13 in)
- Weight
- 790 g (1.75 lb)
- Installation
- DIN-rail mounting Wall mounting (with optional kit)
Environmental Limits
- Operating Temperature
- -10 to 60°C (14 to 140°F)
- Storage Temperature (package included)
- -40 to 85°C (-40 to 185°F)
- Ambient Relative Humidity
- 5 to 95% (non-condensing)
Standards and Certifications
- Safety
- UL 60950 UL 508 CSA C22.2 No. 60950, EN 62368-1 (LVD)
- EMC
- EN 55032/35
- EMI
- CISPR 32, FCC Part 15B Class A
- EMS
- IEC 61000-4-2 ESD: Contact: 6 kV; Air: 8 kV IEC 61000-4-3 RS: 80 MHz to 1 MHz: 20 V/m IEC 61000-4-4 EFT: Power: 2 kV; Signal: 1 kV IEC 61000-4-5 Surge: Power: 2 kV; Signal: 2 kV IEC 61000-4-6 CS: 10 V IEC 61000-4-8 PFMF
- Hazardous Locations
- ATEX Class I Division 2
- Vibration
- IEC 60068-2-6
- Shock
- IEC 60068-2-27
- Freefall
- IEC 60068-2-32
- Maritime
- DNV
MTBF
- Time
- 2,388,799 hrs
- Standards
- MIL-HDBK-217F
Warranty
- Warranty Period
- 5 years
- Details
- See www.moxa.com/warranty
Resources
| Name | Type | Version | Date |
|---|---|---|---|
| Datasheet for EDS-309 Series720.7 KB | Datasheet | v1.3 | Aug 26, 2025 |
| QIG for EDS-308/EDS-309 Series2.3 MB | QIG | v11.4 | Mar 11, 2025 |
| Declaration of Conformity (EU/UK) for EDS-309 Series304.8 KB | Declaration | v1.0 | Feb 02, 2024 |
| Tech Note: Recommended Procedure for STP Cable Grounding on Moxa's Industrial Ethernet Switches558.3 KB | Tech Note | v1.0 | Feb 12, 2019 |
| 2D CAD for EDS-309-3M-SC298.8 KB | 2D CAD | — | Jan 19, 2018 |
| 2D CAD for EDS-309-3M-ST248.6 KB | 2D CAD | — | Jan 19, 2018 |
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