MOXA IMC-21A-S-SC-T Industrial Ethernet-to-Fiber Media Converter
1x 10/100BaseT(X) RJ45 to 1x 100BaseFX single-mode SC fiber, 40km range, -40°C to 75°C, DIN-rail.

The MOXA IMC-21A-S-SC-T is a rugged entry-level media converter designed to reliably extend Ethernet networks over long distances in harsh industrial environments. It converts 10/100BaseT(X) copper signals to 100BaseFX fiber optics, featuring a single-mode SC fiber port and wide -40°C to 75°C operating temperature for demanding applications .

Key Features and Product Highlights

• Copper to Fiber Conversion: 1x 10/100BaseT(X) RJ45 port (auto negotiation, MDI/MDI-X) and 1x 100BaseFX single-mode fiber port with SC connector .

• Long-Distance Transmission: Single-mode fiber supports transmission distances up to 40 km at 1310 nm wavelength, ideal for connecting remote sites and spanning large facilities .

• Extended Temperature Range: Rated for -40°C to 75°C operating temperature (-T model), ensuring reliable performance in extreme outdoor and industrial environments .

• Link Fault Pass-Through (LFPT): Immediately notifies the link partner of a fiber fault, enabling rapid network diagnostics and minimizing downtime .

• Rugged Industrial Design: Metal IP30 housing, DIN-rail mounting, and compact dimensions (30 x 125 x 79 mm) for easy installation in control cabinets .

• Flexible Power Input: Wide 12 to 48 VDC input range with terminal block connection, overload current protection, and reverse polarity protection .

• DIP Switch Configuration: Easily configure speed (10/100), duplex mode (FDX/HDX), auto/force settings, and LFPT via onboard DIP switches .

• Built-in Protection: 1.5 kV magnetic isolation protection for enhanced reliability in electrically noisy environments .

Standards and Certifications

• Safety: UL 60950-1, EN 60950-1 

• EMC: EN 55032/35, FCC Part 15 Class A 

• EMS: IEC 61000-4-2 (ESD), IEC 61000-4-3 (RS), IEC 61000-4-4 (EFT), IEC 61000-4-5 (Surge), IEC 61000-4-6 (CS) 

• Vibration: IEC 60068-2-6 

  

  
  

Applications

• Industrial Automation: Extending network reach in manufacturing plants and process control systems .

• Transportation Infrastructure: Connecting remote traffic control equipment, railway signaling, and tunnel monitoring systems .

• Power & Utilities: SCADA communications in substations, renewable energy sites, and distribution networks.

• Outdoor Installations: Reliable operation in uncontrolled environments such as pipelines, security perimeters, and remote monitoring stations .

• Legacy System Integration: Upgrading copper-based networks with fiber connectivity without complete overhaul .