RL2-046FBB by Bosch Rexroth Indramat

The RL2-046FBB is a motor power cable produced by Bosch Rexroth Indramat and belongs to the RL2 Motor Power Cables series. Designed for drive-to-motor power transmission in second-generation Rexroth servo assemblies, the cable consolidates three phase conductors and auxiliary signal cores inside one sheath, reducing routing complexity. Within automated cells, it links an IndraDrive amplifier to the motor terminal, delivering regulated three-phase energy while preserving electromagnetic compatibility with adjacent feedback lines. This combined layout helps keep wiring compact on servo axes that use cable tracks or limited cabinet space.

The copper conductors are sized at 12 AWG with a metric cross-section of 4.0 mm², which supports the permitted current density and helps limit resistive loss on long runs. Under rated grouping conditions, the cable carries 29.5 A continuously, matching the demand of mid-frame synchronous motors used in packaging and material-handling equipment. Power insulation is rated for 600/1000 V, while an internal control pair is rated for 450/750 V, allowing mixed-voltage transmission inside the same jacket without dielectric failure. A PUR outer jacket resists mineral oil and coolant splash, and an M40 power connector molded to the motor end enables direct connection to second-generation housings. The mixed conductor layout also allows power and auxiliary circuits to travel together without adding a separate cable for the same motor connection.

Service life in energy-chain applications is supported by a flex rating of 5,000,000 cycles. To control conductor strain during motion, dynamic installations require a minimum bend radius of 7.5 x D. For fixed routing, the radius may be reduced to 5 x D without harming the insulation system. The outer sheath is colored Orange (RAL 2003) for quick identification of high-voltage lines inside crowded cabinets. The bright jacket also helps distinguish motor power wiring from nearby low-level signal and feedback cables during routing.