Hubbell DFPCSTSCS30SM ST to SC Singlemode OS2 Plenum Duplex Fiber Patch Cord

The Hubbell DFPCSTSCS30SM is a 30-meter, duplex, singlemode OS2 fiber patch cord terminated with ST connectors on one end and SC connectors on the other, jacketed in a plenum-rated (CMP) sheath. This is a point-to-point interconnect cable built for commercial structured cabling environments where you need OS2-grade glass fiber running through air-handling spaces without a separate conduit — the plenum jacket handles that compliance requirement directly. If you're connecting legacy ST-port equipment (older switches, media converters, or fiber panels) to SC-port gear across a 30-meter run, this is the correct cable to reach for. Browse the full Hubbell cabling line for complementary patch panels and connectivity hardware.

Key Features

• OS2 Singlemode Glass Fiber: OS2 is the standard for long-haul and inter-building singlemode runs — 9/125µm glass that supports transmission distances well beyond what multimode (OM1–OM4) can handle at comparable wavelengths. At 30 meters this run length is well within OS2's capability, leaving significant margin if you later extend via fusion splice or additional cable segments.
• Plenum (CMP) Jacket Rating: The DFPCSTSCS30SM carries a CMP plenum rating, meaning it meets the fire and smoke propagation requirements for installation in air-handling ceiling and floor plenum spaces under NFPA 70. You don't need to pull separate conduit or reroute through riser pathways — the jacket itself satisfies the code requirement for open plenum routing. This matters on remodel or retrofit jobs where conduit runs are expensive or physically impossible.
• Duplex Configuration: Two fibers in a single jacket, which is the correct build for full-duplex links — one fiber carries transmit, the other carry. Virtually all active optical transceivers (SFP, SFP+, GBIC) and fiber-port switches use duplex connections, so this matches standard deployment without adapters or splitters.
• ST Connector (Source End): The ST bayonet connector was the dominant fiber termination standard for decades and remains common on legacy switches, patch panels, media converters, and older IP camera backhaul infrastructure. If your fiber panel or source device has ST ports, this end is the native fit — no field termination or hybrid adapter needed.
• SC Connector (Destination End): SC push-pull connectors are the prevailing standard on most modern active equipment — SFP transceivers, Ethernet switches, NVRs with fiber uplinks, and current-generation fiber patch panels. The SC termination on the destination end of this cable interfaces directly with that equipment.
• 30-Meter Length: At 30 meters (approximately 98 feet), this cord bridges mid-range inter-rack or cross-floor runs — long enough to span an IDF-to-MDF hop in a mid-size building, short enough to remain manageable without excess slack coiled in a rack. For fiber optic cable assemblies at other lengths, check the broader family.

Integration and Compatibility

Deploy the DFPCSTSCS30SM anywhere an ST-to-SC OS2 singlemode duplex cross-connect is required in a plenum-rated environment. Common pairings include ST-port fiber patch panels (source) to SC-port network switches or media converters (destination), legacy security camera backhaul fiber panels connecting to modern NVR fiber uplinks, and IDF-to-MDF interconnects in commercial office or campus buildings. Confirm the transceiver wavelength on both ends is matched — OS2 singlemode typically operates at 1310nm or 1550nm, and both connected transceivers must share the same wavelength for the link to function. This cable does not support multimode transceivers; if your equipment uses OM1–OM4 multimode optics, you need a multimode patch cord instead. For guidance on selecting the right fiber type for your run, refer to this fiber cable selection guide.

Frequently Asked Questions

Q: What connectors are on each end of the DFPCSTSCS30SM?

A: The DFPCSTSCS30SM has ST connectors on one end and SC connectors on the other end. It is a duplex cable, so there are two ST connectors and two SC connectors total.

Q: Is this cable suitable for installation in plenum ceiling spaces without conduit?

A: Yes. The DFPCSTSCS30SM carries a plenum (CMP) jacket rating, which satisfies NFPA 70 requirements for open installation in air-handling plenum spaces. No additional conduit is required in most plenum ceiling environments — verify with your local AHJ for specific project requirements.

Q: Does the DFPCSTSCS30SM work with multimode fiber equipment?

A: No. This is an OS2 singlemode fiber cable. It is not compatible with multimode (OM1, OM2, OM3, OM4) transceivers or equipment. Both connected devices must use singlemode optics at a matched wavelength (typically 1310nm or 1550nm).

Q: What is the physical length of this patch cord?

A: The DFPCSTSCS30SM is 30 meters (approximately 98 feet) in length, suitable for mid-range inter-rack or cross-floor fiber runs in commercial structured cabling environments.

Q: Can this cable be used in a riser (CMR) application?

A: A plenum-rated (CMP) cable meets or exceeds CMR riser requirements, so yes — CMP-rated cables are acceptable in both plenum and riser pathways. The reverse is not true: a CMR cable cannot be substituted in a plenum application.

Marty Allison

The DFPCSTSCS30SM fills a specific and persistent gap in structured cabling deployments: the ST-to-SC cross-connect. The plenum (CMP) jacket rating is the detail that makes or breaks code compliance on retrofit and remodel jobs — pulling fiber through a finished ceiling plenum without conduit is only legal when the jacket qualifies, and this cable does. At 30 meters, it comfortably bridges IDF-to-active-equipment runs in mid-size commercial floors without the excess coil you'd be managing on a 50-meter cord.

Technical Highlights:

• OS2 Singlemode Core: 9/125µm glass supports singlemode wavelengths (1310nm/1550nm) with attenuation characteristics appropriate for inter-building and long inter-rack runs — 30 meters is a very conservative use of OS2 capability, which means virtually zero link-budget risk on this length.
• CMP Plenum Jacket: Meets NFPA 70 Article 800 requirements for open plenum installation — the jacket is the compliance mechanism, not the conduit. This eliminates the labor cost of conduit installation in plenum ceiling spaces.
• Duplex ST/SC Termination: Two-fiber build with ST bayonet source and SC push-pull destination — the correct pairing for full-duplex active links connecting legacy ST-port fiber panels to modern SC-port switches or NVR uplinks without field termination.

Deployment Considerations:

• Confirm transceiver wavelength match before installing — both ends must operate at the same wavelength (1310nm or 1550nm). Mismatched wavelengths on an OS2 link will pass light but produce high bit-error rates or no link at all, and it's a difficult fault to diagnose without a light meter.
• This cable is OS2 singlemode only — it will not function with multimode (OM1–OM4) SFPs or fiber-port equipment. If there is any uncertainty about the optic type in the destination switch or NVR, check the SFP part number before ordering.

The DFPCSTSCS30SM is the right pull for a commercial IDF-to-MDF fiber cross-connect in a plenum ceiling environment where legacy ST-port patch panels need to reach modern SC-port active equipment — specifically in retrofit and tenant-improvement projects where open plenum routing is the only practical cable path.