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3 port DIN-Rail copper to fiber media converters
Product Overview

The KOM300F is a ultra low power consumption Green industrial media convertor, its full load power consumption is as low as 3.5 watts. The KOM300F supports 1 100Base-FX fiber port and 2 10/100Base-T(X) copper ports. The KOM300F provides 9-36 VDC, 18-72VDC or 85-264VAC/77-300VDC single power inputs, supports DIN-Rail mounting or Panel mounting, metal housing with IP40 protection class, operating temperature -40°C to 75°C.

Key Features

Green Ethernet solution with ultra-low power consumption design, its full load power consumption is as low as 3.5 watts
1 100Base-FX port and 2 10/100Base-T(X) RJ45 ports 
Single power inputs with wide voltage range
IP40 protection class
EMC level 3
CE, FCC certificates


Product Specifications
Standard IEEE 802.3i(10Base-T)
IEEE 802.3u(100Base-TX and 100Base-FX)
Switch Properties MAC Table 2K
Packet Buffer 1Mbit
Packet Forwarding Rate 0.8Mpps
Switching Delay <5μs
Interface Fast Ethernet Ports
100Base-FX, SM/MM port, SC/ST/FC connector
10/100Base-T(X) RJ45 port
LED Indicators in the front panel
Power LED: PWR
Interface LED: Link/ACT, Speed (RJ45 Ports); Link/ACT(Fiber Ports)
Power Requirements 24-48VDC(18-72VDC) :3-pin 5.08mm-spacing plug-in terminal block
12-24VDC(9-36VDC) :3-pin 5.08mm-spacing plug-in terminal block
24VDC(18-36VDC): 3-pin 5.08mm-spacing plug-in terminal block
100-240VAC,50/60Hz;110-220VDC(85-264VAC/77-300VDC):3-pin 7.62mm-spacing plug-in terminal block
Power Consumption <3.5W
Overload Protection Support
Reverse Connection Protection Support
Physical Characteristics Housing Metal
Heat Dissipation Mode Natural cooling, without fans
Protection Class IP40
Dimensions 30mm×115mm×91.5mm (W×H×D)
Weight 0.4kg
Mounting DIN-Rail or Panel mounting
Environmental Limits Operating Temperature -40 to 75℃
Storage Temperature -40 to 85℃
Ambient Relative Humidity 5 to 95% (non-condensing)
Quality Assurance MTBF 478,852 hours
Warranty period 5 years
Approvals CE, FCC
EMC: EN 55032, EN 61000-6-4, EN 61000-6-2
IEC 62368-1, EN 62368-1
Industry Standard EMI FCC CFR47 Part 15,EN55032/CISPR22,Class A
IEC61000-4-2(ESD) ±6kV(contact),±8kV(air)
IEC61000-4-3(RS) 10V/m(80MHz-2GHz)
IEC61000-4-4(EFT) Power Port:±2kV;Data Port:±1kV
IEC61000-4-5(Surge) Power Port:±1kV/DM,±2kV/CM;Data Port:±2kV
IEC61000-4-6(CS) 10V(150kHz-80MHz)
Mechanical standards
IEC60068-2-6 (Vibration)
IEC60068-2-27 (Shock)
IEC60068-2-32 (Free Fall)
Mechanical Drawing


Ordering Information

Ordering Information

Product Model


Code definition

Code selection


1M2T = 1 × 100Base-FX multi-mode port, 2 × 10/100Base-T(X) RJ45 ports  

1S2T = 1 × 100Base-FX single mode port, 2 × 10/100Base-T(X) RJ45 ports


SC05 = SC connector, multi-mode, 1310nm, 5km

ST05 = ST connector, multi-mode, 1310nm, 5km

FC05 = FC connector, multi-mode, 1310nm, 5km

SC40 = SC connector, single mode, 1310nm, 40km

ST40 = ST connector, single mode, 1310nm, 40km

FC40 = FC connector, single mode, 1310nm, 40km

SC60 = SC connector, single mode, 1310nm, 60km

SC80 = SC connector, single mode, 1550nm, 80km


Power Supply

L2 = 24-48VDC(18-72VDC), single power input

L5 = 12-24VDC( 9-36VDC), single power input

L3 = 24VDC(18-36VDC), single power input

HV = 100-240VAC,50/60Hz;110-220VDC(85-264VAC/77-300VDC), single power input



Accessory model



Panel for panel mounting


Dustproof cover for RJ45 port