The Siemens 3RK1911-0BW60 is a shielded ECOFAST motor connection cable with a 4 x 2.5 mm² power core and 4 x 0.75 mm² signal core, supplied as an unassembled 20-meter length. This is the pre-terminated cable run for Siemens ECOFAST motor starters and distribution boxes in a modular, decentralized installation — you cut and strip to fit the actual gland plate and motor plug position on site.
What the cable construction means for fit
The 4 x 2.5 mm² conductors handle the motor power (up to about 4 kW at 400 V depending on run length and ambient), while the 4 x 0.75 mm² cores carry brake control, temperature sensor feedback, or auxiliary signals back to the drive or I/O module. The overall shield keeps motor-generated EMI off the signal pair — essential when the cable runs alongside other fieldbus or sensor lines in the same cable tray. Because it is supplied unassembled and by the meter, you terminate the motor plug and the ECOFAST connector yourself; the 20 m length gives you some slack for routing through cable ducts or chain, but verify the actual run before cutting.