What this cable is and where it fits
The Siemens 6GT2791-2PH50 is a 5 m plug-in cable for connecting an RTLS4000 Gateway or Anchor to the power supply unit. It terminates in an M12 male 4-pin straight connector and a Bulgin 400 female 3-pin straight connector. Rated for 300 V maximum, the cable carries a braided shield of tin-plated copper wires and is designated L-YC11Y 6x1x0.25 6x24AWG CM. The 300 V rating and CM listing (UL/ETL) apply to the cable only, not the assembled plugs — so the full assembly's voltage rating is governed by the connector pair.
Mechanical and environmental ratings — what they mean for deployment
This cable is rated for 3 million bending cycles with a minimum continuous bending radius of 75 mm, and a single-bend minimum radius of 21.6 mm. That makes it suitable for cable carrier / drag chain applications where the cable flexes repeatedly — think moving robot arms or linear actuators on an RTLS-tracked asset. Maximum tensile load is 200 N, so it can handle moderate pull forces during installation but should not be used as a structural support. Operating, storage, transport, and installation temperature range is -30 to +80 °C — consistent across all phases, which simplifies logistics planning. The cable sheath is black PVC, silicon-free and resistant to grease, mineral oil, and UV radiation. It is not halogen-free. Flame resistance is per IEC 60332-1-2, so it passes the single-wire vertical flame test — adequate for most industrial panels but not a plenum-rated cable.
Lifecycle and sourcing reality
This part is classified NRND (Not Recommended for New Designs). It remains available for existing BOM lines and service replacements, but Siemens has signaled it will not be the long-term recommendation for new installations. No official successor order code is listed in the lifecycle record.
Compliance and approvals
RoHS conformity is confirmed. The cable carries a UL/ETL listing for 300 V rating (CM, cable only). Flame resistance tested to IEC 60332-1-2. The cable is silicon-free and UV-resistant — relevant for environments where silicone outgassing can contaminate optics or coatings, and for outdoor or sun-exposed runs.