What it is and what it does
The Siemens 3RK1911-0CV30 is a preassembled ECOFAST motor connection cable, shielded, with a 4 x 2.5 mm² power core and 4 x 0.75 mm² signal core configuration. One end terminates in a HAN 10E male connector, ready to plug into a compatible ECOFAST motor or distribution box. This is a length-specific variant: you specify the exact cable length at ordering, within the window of greater than 3 meters and less than 5 meters, with a minimum grid increment of 10 cm.
What the description means for fit
The 4 x 2.5 mm² power conductors handle the motor supply for drives up to roughly 5.5 kW at 400 V, depending on run length and ambient temperature. The 4 x 0.75 mm² cores are sized for brake control, encoder feedback, or thermal sensor signals — common in servo and geared motor applications. The HAN 10E male connector on one side mates directly with the female receptacle on an ECOFAST motor or junction box; the other end is unterminated, intended for a gland plate entry into the control panel or a field distribution box. Because the cable is shielded, it suits variable-frequency drive installations where radiated EMI from the motor cable must be contained.