IMC-21A-M-SC – MOXA Ethernet-to-Fiber Media Converters

USD $ 139.23


Manufacturer Part Number: MOXA IMC-21A-M-SC
OEM Spec Ref 

The MOXA IMC-21A-M-SC is a state-of-the-art Ethernet-to-Fiber Media Converters, expertly engineered to facilitate reliable and efficient optical fiber extension of Ethernet networks. This device is tailored to integrate effortlessly into various industrial settings, guaranteeing enhanced data communication and extended network coverage.

Key Features:

  • Reliable Media Conversion: The IMC-21A-M-SC efficiently converts Ethernet signals into fiber optic signals, allowing for extended data transmission over greater distances than typical Ethernet connections.
  • Robust Industrial Design: Constructed to withstand the rigors of industrial environments, this media converter is encased in a durable metal housing, offering exceptional resilience against physical and electromagnetic disturbances.
  • Plug-and-Play Simplicity: Designed for ease of use, it supports auto MDI/MDI-X function and auto-negotiation, simplifying installation and maintenance without requiring extensive technical knowledge.
  • Wide Operating Temperature Range: It operates reliably across a temperature range of -10 to 60°C, ensuring stable performance under varying industrial temperatures.
  • Dual Power Inputs: Enhances reliability through redundancy; the converter is equipped with dual power inputs to safeguard against power failures.


  • Enhanced Network Reliability: By converting to fiber optics, the IMC-21A-M-SC mitigates risks of electromagnetic interference, ensuring stable and reliable network connections in electrically noisy environments.
  • Extended Transmission Range: Fiber optic communication enables significantly longer transmission distances than copper cables, essential for expansive industrial areas.
  • Reduced Downtime: The robust design and dual power inputs contribute to reduced system downtime, enhancing productivity and operational continuity.
  • Scalability: Easy integration into existing setups allows for scalable network expansions as organizational needs grow and evolve.
  • Improved Data Security: Fiber optic cables are inherently more secure from data tapping and other forms of interception, offering an additional layer of security in sensitive environments.


  • Industrial Automation: Vital for connecting devices in large industrial plants where long-distance data transmission is necessary.
  • Traffic Monitoring Systems: Used in traffic management where reliable, long-range communication is crucial.
  • Security and Surveillance: Ideal for extending the network range in security systems, ensuring seamless data transmission from remote cameras to control centers.
  • Remote Monitoring: Enables dependable real-time data communication from remote field sites to central monitoring locations.
  • Utility Networks: Plays an integral role in utility facilities, supporting resilient network infrastructures across extensive operational areas.

The MOXA IMC-21A-M-SC Ethernet-to-Fiber Media Converters embodies MOXA’s commitment to enhancing connectivity and network reliability, making it an essential component for modern industrial applications.


Ethernet Interface 10/100BaseT(X) Ports (RJ45 connector) 1
100BaseFX Ports (multi-mode SC connector) 1
Magnetic Isolation Protection 1.5 kV (built-in)
Optical Fiber Refer table 2
Power Parameters Input Current 12 to 48 VDC, 265mA (Max.)
Input Voltage 12 to 48 VDC
Overload Current Protection Supported
Power Connector Terminal block
Reverse Polarity Protection Supported
Physical Characteristics Housing Metal
IP Rating IP30
Dimensions 30 x 125 x 79 mm (1.19 x 4.92 x 3.11 in)
Weight 170 g (0.37 lb)
Installation DIN-rail mounting
Environmental Limits Operating Temperature -10 to 60°C (14 to 140°F)
Storage Temperature -40 to 75°C (-40 to 167°F)
Ambient Relative Humidity 5 to 95% (non-condensing)
Standards and Certifications EMC EN 55032/24
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 GHz: 3 V/m
IEC 61000-4-4 EFT: Power: 1 kV; Signal: 0.5 kV
IEC 61000-4-5 Surge: Power: 1 kV; Signal: 1 kV
IEC 61000-4-6 CS: 150 kHz to 80 MHz: 3 V/m; Signal: 3 V/m
IEC 61000-4-8 PFMF
IEC 61000-4-11
Environmental Testing IEC 60068-2-1
IEC 60068-2-2
IEC 60068-2-3
Safety EN 60950-1, UL 60950-1
Vibration IEC 60068-2-6
MTBF Time 353,000 hours
Standards MIL-HDBK-217F
Warranty Warranty Period 5 years
Details See


Optical Fiber

Multi-Mode Single-Mode
Fiber Cable Type OM1 50/125 µm G.652
800 MHz x km
Typical Distance 4 km 5 km 40 km
Wavelength Typical (nm) 1300 1310
TX Range (nm) 1260 to 1360 1280 to 1340
RX Range (nm) 1100 to 1600 1100 to 1600
Optical Power TX Range (dBm) -10 to -20 0 to -5
RX Range (dBm) -3 to -32 -3 to -34
Link Budget (dB) 12 29
Dispersion Penalty (dB) 3 1

Note: When connecting a single-mode fiber transceiver, we recommend using an attenuator to prevent damage caused by excessive optical power.
Note: Compute the “typical distance” of a specific fiber transceiver as follows: Link budget (dB) > dispersion penalty (dB) + total link loss (dB).

Weight 0.17 kg
Dimensions 3 × 12.5 × 7.9 cm