The Siemens 6GT2091-0PH50 is a SIMATIC RF connecting cable, purpose-built for supplying 24 V to devices with L-coded M12 connectors from the 6GT2898-0ACxx wide-range power supply units. It's a 5 m flexible, unshielded 4-wire cable with a PVC-insulated black PUR sheath, terminated on one end with a 5-pin M12 A-coded male straight connector and on the other with a 4-pin M12 L-coded female straight connector.
Rated for a maximum of 30 V, this cable is designed for the 24 V DC power distribution common in industrial automation — the L-coded connector prevents accidental mating with higher-voltage circuits. The 5 m length covers typical distances from a panel-mounted power supply to a remote RFID reader or actuator. The unshielded design means it's intended for power delivery, not sensitive signal transmission; if you need to run it alongside data lines, keep separation in the cable tray. The minimum bend radius with a single bend is 43 mm, with multiple bends requiring 64 mm, so plan your routing accordingly in tight enclosures.
This cable is a field-installable power link for SIMATIC RF devices — RFID readers, identification systems, and other 24 V field devices that use the L-coded M12 interface for power. It's the standard way to bring 24 V from a dedicated power supply unit (type 6GT2898-0ACxx) to the device without hardwiring the connection.