INFRALAN U-DQ(ZN)BH OM3 4G (1x4) LSZH single-mode? no — multimode optical cable, OM3, 4G (1x4), black, 5.8 mm

INFRALAN U-DQ(ZN)BH OM3 4G (1x4) is a multimode fiber optic cable designed for high-bandwidth short- to medium-range links. The cable uses OM3 graded multimode fibers in a 1x4 configuration, enclosed in a black low-smoke zero-halogen (LSZH) jacket with a 5.8 mm outer diameter. It is intended for structured cabling in enterprise networks, data centers and building backbones where fire-safety standards and reliable multimode performance are required.

Advantages

The cable combines OM3 multimode performance with a compact 5.8 mm diameter and an LSZH outer jacket, offering a balance of high data throughput and improved safety in confined or public spaces. The 1x4 fiber construction simplifies distribution of multiple channels while keeping routing and bend handling easier than larger multi-fiber assemblies. The black jacket provides discreet installation in visible areas and the construction is suitable for installation in ducts, trays and risers where low smoke and halogen-free properties are specified.

Suitable for

• Short- to medium-distance multimode links in enterprise LANs
• Data center intra-building connections and patching
• Building backbone and riser cabling where LSZH is required
• Multimode applications using OM3 performance (10G and some 40G/100G over short distances)

When it may not be suitable

This cable uses OM3 multimode fiber and is not suitable for applications that require single-mode fiber over long distances or where modal bandwidth and reach of single-mode are necessary. For outdoor direct burial, prolonged UV exposure or applications requiring armored protection, alternative constructions specifically rated for those conditions should be chosen. The compact 5.8 mm diameter is optimized for indoor routing but may offer less mechanical protection than larger armored cables.

Key specifications

• Fiber type: Multimode, OM3 grade
• Configuration: 4 fibers in 1 tube (1x4)
• Outer jacket: Low-smoke zero-halogen (LSZH), black
• Outer diameter: 5.8 mm
• Intended use: Indoor backbone, riser and data center cabling
• Tensile rating: suitable for standard installation tensions (installation-rated)

How to use

Route the cable through trays, conduits or riser spaces following building codes and LSZH handling guidelines. Terminate fibers with compatible multimode connectors and verify OM3 performance using appropriate test equipment such as insertion loss and OTDR measurements tuned for multimode fibers. Use proper bend radius practices during installation to maintain multimode performance; avoid sharp bends or compression. Secure and label cable runs at both ends and follow local fire-safety and cabling standards when deploying the cable in occupied or public spaces.

What to consider before purchase

• Confirm OM3 multimode meets the required link distance and data-rate specifications for your application (10G, short-reach 40G/100G)
• Ensure LSZH jacket is required by building regulations or site policy
• Verify indoor/riser rating is acceptable for your intended installation environment
• Check required connector types and termination method for compatibility

Usage recommendations

For best results, plan cable routes to minimize tight bends, use multimode-appropriate transceivers and test each link after termination. Store and handle the cable in dry conditions and follow manufacturer installation guidelines for maximum tensile and bend specifications.