INFRALAN U-DQ(ZN)BH OM3 4G (1x4) multi-mode fiber cable, LSZH black, 7.5mm

INFRALAN U-DQ(ZN)BH OM3 4G (1x4) is an indoor/outdoor multi-mode fiber cable designed for backbone and horizontal building cabling. It contains four OM3 graded multimode fibers arranged in a 1x4 ribbon formation, enclosed in a black LSZH sheath with a 7.5 mm outer diameter. The cable features flame-retardant construction and a tensile strength rating up to 3000 N, making it compatible with riser, duct and tray installations where low smoke and halogen-free materials are required.

Advantages

The OM3 multimode fibers support high-speed data transmission and are optimized for laser-based equipment, enabling reliable short- to medium-range links in enterprise and data center environments. The LSZH jacket reduces smoke and toxic gas emissions in case of fire, meeting safety requirements for indoor installations. Its compact 7.5 mm diameter and rugged outer sheath simplify routing through conduits, risers and cable trays while maintaining mechanical protection and bend tolerance for typical installation scenarios.

Suitable for

• Building backbone and horizontal cabling
• Data center interconnects and short-range high-speed links
• Riser shafts, ducts and cable trays
• Indoor/outdoor transition runs with protected pathways

When it may not be suitable

This multi-mode OM3 cable is not intended for long-distance single-mode backbone links; for metropolitan or long-haul fiber runs, single-mode fiber is typically required. The cable is designed for protected outdoor use (indoor/outdoor) but is not a direct-burial type for prolonged, unprotected underground installation without additional conduit or protection.

Key specifications

• Fiber type: OM3 multimode, laser-optimized
• Fiber count and configuration: 4 fibers in a 1x4 ribbon
• Outer sheath: LSZH (low smoke zero halogen), black
• Outer diameter: 7.5 mm
• Flame-retardant construction suitable for building installations
• Tensile performance: up to 3000 N (installation-rated)

How to use

Route the cable through conduits, risers or trays avoiding tight bends below the manufacturer’s minimum bend radius. Terminate fibers in appropriate fiber enclosures or patch panels using ribbon-capable connectors or splice trays for the 1x4 ribbon. Use proper fiber stripping, cleaving and polishing tools for end-face preparation, and verify links with an appropriate multimode OTDR or light source and power meter. Secure the cable at regular intervals to relieve strain and avoid crushing or sharp kinks during installation.

What to consider before purchase

• Confirm OM3 multimode fiber is compatible with your transceivers and link distance requirements
• Verify required installation type (indoor/outdoor protected vs. direct burial) and any conduit or protection needed
• Ensure connectorization or splicing equipment supports 1x4 ribbon fibers
• Check building fire-safety rules for LSZH jacket requirements

Usage recommendations

For best performance, pair the OM3 cable with laser-optimized multimode transceivers (e.g., 10G or 40G short-range optics), adhere to minimum bend radius guidelines, and perform end-to-end testing after installation to confirm attenuation and continuity.