The Siemens 3RK1911-0BJ10 is a pre-assembled ECOFAST motor connection cable, 11 x 1.5 mm², cut to 1.5 m with a Han 10E connector on one end. It's a field-termination shortcut for SIRIUS motor starters and contactors that use the ECOFAST interface — you land the bare end in the terminal block and plug the connector into the motor side. Saves the panel-builder the crimp-and-strip time on a multi-conductor cable.
What the key spec means for fit
The 11 x 1.5 mm² conductor count and cross-section tell you this cable carries the motor power plus the brake, temperature sensor, and encoder feedback lines common on SIRIUS ECOFAST motor starters — not just a basic three-phase power cable. At 1.5 m it's a short whip, sized for the distance between a DIN-rail-mounted starter and the motor terminal box in a compact panel. The single-sided Han 10E connector mates with the motor-side receptacle; the bare end lands on the starter's screw terminals.
Deployment context
In a SIRIUS ECOFAST system, this cable connects the motor starter output directly to the motor — the pre-assembled end plugs into the motor's Han 10E inlet, and the stripped wires terminate at the starter's load terminals. No field-wiring of the connector required, which cuts a commissioning step and removes a common failure point (a poorly crimped pin).