The IMC-21 Series from Moxa is a cost-effective, entry-level media converter designed for industrial applications requiring stable and reliable Ethernet-to-fiber conversion. With support for both multi-mode and single-mode fiber (SC or ST connector), the IMC-21 is ideal for simple fiber expansion in rugged environments. DIP switches allow for flexible configuration of duplex modes and speeds (FDX/HDX, 10/100, Auto/Force), and Link Fault Pass-Through (LFPT) improves network diagnostics and transparency.

Featuring a compact plastic housing with IP30 protection, wide voltage input (12–48 VDC), and DIN-rail mounting, these converters integrate easily into cabinets or control boxes. Operating from -10 to 60 °C, the IMC-21 is built to withstand industrial temperatures and conditions.

Technical Specifications:

Ethernet Interfaces:

• 1 x 10/100BaseT(X), RJ45 (auto negotiation, auto MDI/MDI-X)
• 1 x 100BaseFX (per model):
• Multi-mode SC (IMC-21-M-SC): 4 km
• Multi-mode ST (IMC-21-M-ST): 4 km
• Single-mode SC (IMC-21-S-SC): 40 km

Optical Characteristics:

• Wavelength: 1300 nm (MM), 1310 nm (SM)
• TX Power: -10 to -20 dBm (MM), 0 to -5 dBm (SM)
• RX Range: -3 to -32 dBm (MM), -3 to -34 dBm (SM)
• Link Budget: 12 dB (MM), 29 dB (SM)
• Dispersion Penalty: 3 dB (MM), 1 dB (SM)
• Note: Use attenuator with single-mode fiber if required

Power Supply:

• Input Voltage: 12 to 48 VDC
• Max. Input Current: 0.271 A
• Overload Protection: Supported

Physical Characteristics:

• Housing: Plastic
• IP Rating: IP30
• Dimensions: 25 x 109 x 97 mm (0.98 x 4.29 x 3.82 in)
• Weight: 125 g (0.27 lb)
• Mounting: DIN-rail

Environmental Conditions:

• Operating Temperature: -10 to 60°C
• Storage Temperature: -40 to 70°C
• Humidity: 5 to 95% (non-condensing)

Certifications:

• EMC: EN 55032/24, FCC Part 15B, CISPR 32
• EMS: IEC 61000-4-2 to -4-11
• Safety: UL/EN 60950-1
• Environmental Testing: IEC 60068-2-1/2/3
• Vibration: IEC 60068-2-6

MTBF:

• 353,000 hours (MIL-HDBK-217F)

Warranty:

• 5-year manufacturer warranty

Package Contents:

• 1 x IMC-21 media converter
• 1 x Quick installation guide
• 1 x Warranty card