The VW3L20010R100 is a pre-assembled cable kit for the safe torque off (STO) signal, running 10 m (32.8 ft) from an M8 connector at the safety device end to an open cable end that terminates on the drive's printed circuit board connector. That's the full run length you need to bridge the distance between a safety door switch or light curtain and the drive's STO input — no splicing, no intermediate junction box. The integrated cable entry with strain relief means the cable is protected where it enters the connector housing, which matters on a moving panel door or a machine frame where flexing happens.
This cable is designed for drives that use a printed circuit board connector for the safe torque off signal — not the terminal-block STO input you see on some older drives. The M8 connector end mates to a safety relay or safety PLC output; the open end wires directly to the drive's PCB header. If you're retrofitting a safety circuit onto an existing drive, check that the drive has that PCB connector footprint. The 10 m length covers most panel-to-machine distances; if you need shorter, there are other lengths in the same family.