What it is and where it fits
The Siemens 6GT2891-4MN10 is a pre-assembled IO-Link connecting cable for the SIMATIC RF family, designed to link an IO-Link master to an IO-Link reader or sensor. Both ends carry M12 4-pin connectors (male and female, straight), with a 3-core unshielded PUR cable 10 m long. That 10 m reach covers typical machine-mount to cabinet distances on an automation line without needing a junction box.
Key ratings and what they mean for fit
Rated for a maximum of 30 V, which matches the standard IO-Link supply voltage (typically 24 V with headroom). The cable is unshielded and uses PVC wire insulation; it is not halogen-free. Fire behavior meets AWM STYLE 21317 80°C 30V VW-1 for the US and AWM I/II A/B 80°C 30V FT-1 for Canada — important for panel builders who need a UL-recognized flame rating on the cable jacket. Operating temperature range is -5 to +80 °C, storage and transport from -40 to +80 °C, so it handles both the warm cabinet and cold warehouse.