What it is and where it fits
The Siemens 6GT2891-4JH50 is a pre-assembled SIMATIC RF MV plug-in cable, 5 m long, designed to connect an RFID reader to a communication module such as the ASM 456, RF160C, RF170C, or RF18XC. It's a trailing cable with a PUR jacket, rated for 300 V, and terminated with M12 connectors — male 8-pin straight on one end, female 8-pin angled on the other. The cable designation is L-YC11Y 6x1x0.25 6x24AWG CM, meaning six individually shielded twisted pairs of 0.25 mm² (24 AWG) conductors. The braided shield is tin-plated copper, and the wire insulation is PVC.
Key ratings and what they mean for fit
Rated for 300 V maximum, this cable is suitable for the signal-level voltages typical of RFID reader interfaces, not mains power. The UL/ETL listing at 300 V applies to the cable only (without plug), confirming its use in North American installations where a 300 V rating is standard for electronic circuits. The cable is rated for 3 million bending cycles with a minimum continuous bending radius of 75 mm, and a single-bend radius of 21.6 mm. This makes it suitable for dynamic applications on moving machine parts or cable carriers where flex life is critical. The maximum tensile load is 200 N. It operates across a wide temperature range of -30 to +80 °C during operation, storage, transport, and installation, which covers most industrial environments including unheated warehouses and outdoor-adjacent areas. The cable is resistant to grease and mineral oil, and is silicon-free — important for paint shops or applications where silicone contamination can cause adhesion failures. It is not halogen-free, so consider that for plenum or low-smoke requirements. Flame behavior is rated flame resistant per IEC 60332-1-2, and the cable is resistant to UV radiation, supporting outdoor or sun-exposed runs.
Integration notes
The M12 angled female connector on the reader end is designed for tight spaces where a straight plug would protrude too far. The 5 m length is a common reach from a reader mounted on a conveyor or gantry to a fixed communication module in a nearby cabinet or junction box. The cable is trailing-rated, meaning it can withstand continuous flexing in cable carriers. The 6 individually shielded pairs (6x1x0.25) provide noise immunity for the differential signals used in RS-485 or similar reader interfaces. The braided shield should be grounded at the communication module end per standard EMC practice.