The IMC-21A Series from Moxa provides reliable and stable media conversion from 10/100BaseT(X) Ethernet to 100BaseFX fiber in harsh industrial environments. Housed in a rugged metal enclosure with IP30 protection, the IMC-21A supports an extended operating temperature range of -40 to 75°C (-T models), making it suitable for challenging outdoor and factory conditions.

The device supports Link Fault Pass-Through (LFPT) to enhance network fault diagnostics and features DIP switches for configuring duplex modes, speed settings, and operation modes. Available with SC or ST fiber connectors for either multi-mode or single-mode fiber, this converter is perfect for budget-sensitive applications that require industrial-grade reliability.

Technical Specifications:

Ethernet Interface:

• 1 x 10/100BaseT(X), RJ45 (Auto-negotiation, Auto-MDI/MDI-X)
• 1 x 100BaseFX (depending on model):
• IMC-21A-M-SC / M-SC-T: Multi-mode SC
• IMC-21A-M-ST / M-ST-T: Multi-mode ST
• IMC-21A-S-SC / S-SC-T: Single-mode SC

Optical Fiber:

• Wavelength: 1300 nm (MM), 1310 nm (SM)
• TX Range: -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 an attenuator with SM transceivers to avoid excessive optical power

Power Parameters:

• Input Voltage: 12 to 48 VDC
• Max. Current: 265 mA
• Overload & Reverse Polarity Protection: Supported
• Connector: Terminal block

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:
• Standard: -10 to 60°C
• Wide Temp (-T): -40 to 75°C
• Storage Temperature: -40 to 75°C
• Humidity: 5–95% (non-condensing)

Certifications:

• EMC: EN 55032/35, FCC Part 15B, CISPR 32
• EMS: IEC 61000-4-2 to -4-11
• Safety: EN/UL 60950-1
• Vibration: IEC 60068-2-6
• Environmental Testing: IEC 60068-2-1/-2/-3

MTBF:

• 353,000 hours (MIL-HDBK-217F standard)

Warranty:

• 5-year manufacturer warranty

Package Contents:

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