Features and Benefits 

• 4 IEEE 802.3af-compliant PoE and Ethernet combo ports
• Up to 15.4 watts at 48 VDC per PoE port
• Intelligent power consumption detection and classification
• Redundant dual VDC power inputs
• -40 to 75?C operating temperature range (T models) 

Introduction

The EDS-P308 switches are smart, 8-port, unmanaged Ethernet switches supporting PoE (Power-over-Ethernet) on ports 1 to 4. The switches are classified as power source equipment (PSE), and when used in this way, the EDS-P308 switches enable centralization of the power supply and provide up to 15.4 watts of power per port. The switches can be used to power IEEE 802.3af compliant powered devices (PD), eliminating the need for additional wiring, and support IEEE 802.3/802.3u/802.3x with 10/100M, full/half-duplex, MDI/MDI-X auto-sensing to provide an economical solution for your industrial Ethernet network. In addition, the built-in relay warning function alerts network engineers when power failures or port breaks occur.

Spec :

• Technology
Standards	IEEE 802.3af for Power-over-Ethernet IEEE 802.3 for 10BaseT IEEE 802.3u for 100BaseT(X) 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	512 Kbit
• Interface
Fiber Ports	100BaseFX ports (SC connector)
RJ45 Ports	10/100BaseT(X) auto negotiation speed, Full/Half duplex mode, and auto MDI/MDI-X connection
PoE Pinout	V+, V+, V-, V- for pin 1, 2, 3, 6 (Endspan, MDI Alternative A)
DIP Switches	Port break alarm mask
LED Indicators	PWR1, PWR2, FAULT, 10/100M, PoE
Alarm Contact	1 relay output with current carrying capacity of 0.5 A @ 48 VDC
• Optical Fiber
• Power Requirements
Input Voltage	48 (46 to 50 V) VDC, redundant inputs
Input Current	Max. 1.6 A @ 48 V (supports up to 4 ports at 15.4 W per PoE port)
Overload Current Protection	2.5 A @ 48 VDC
Connection	1 removable 6-contact terminal block
Reverse Polarity Protection	Present
• Physical Characteristics
Housing	Metal, IP30 protection
Dimensions	53.6 × 135 × 105 mm (2.11 x 5.31 x 4.13 in)
Weight	840 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	UL 508
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 4, EN 61000-4-5 (Surge) Level 4, EN 61000-4-6 (CS) Level 3, EN61000-4-8
Marine	DNV, GL, LR, ABS, NK
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	406,194 hrs
Database	Telcordia (Bellcore), GB