Product Description:

The HLR01.1N-36K0-N05R4-A-007-NNNN is a wire-wound brake resistor manufactured by Bosch Rexroth Indramat for the HLR Brake Resistors series. In a regenerative AC drive system, this resistor converts surplus kinetic energy from a decelerating motor into heat so the DC bus voltage remains within safe limits. By pairing with Rexroth converters and servo drives, the assembly protects power electronics from overvoltage events during rapid stops or cyclic braking sequences common in packaging, material handling, and machining cells, where repeated deceleration can return substantial energy to the drive.

During steady cycling, the unit dissipates a continuous braking power of 36 kW. This is the thermal load it can handle continuously without exceeding its design temperature. The resistance value is 6.1 Ω, which sets the current drawn from the DC link and the braking torque available from the attached drive. Short bursts are supported by a maximum braking power of 111 kW. Such peaks are limited to an on-time of 35 s per duty cycle, after which cooling is required to avoid overheating. This limit is important in applications with frequent stop-start motion because the resistor must cool between heavy braking intervals. Over a single full-load activation, the element can absorb 3888 kWs of energy during one braking event.

The mechanical envelope of the resistor simplifies panel layout and airflow planning. It spans a width of 995 mm, stands 710 mm high, and reaches a depth of 490 mm, so clearance is needed on all sides for convective cooling. A mass of 93 kg adds thermal inertia and slows temperature rise during repeated cycles. Its large enclosure should be placed where rising heat can leave the installation without warming nearby control components. The size and weight also affect cabinet support, ventilation, and safe switching intervals for drive-controlled deceleration tasks.