Product Description:

The HLR01.1N-01K8-N40R0-A-007-NNNN is a braking resistor produced by Bosch Rexroth Indramat as part of the HLR Brake Resistors series. In a drive system, it functions as an energy sink by turning regenerative current from servo or inverter axes into heat so the shared DC bus voltage stays within safe limits during sudden stops, reversals, or downward travel. This type of resistor is used when moving loads return energy to the drive during deceleration instead of consuming power. It helps protect the connected power module and supports stable deceleration behavior in automated conveyors, gantries, and packaging machinery.

The unit carries a continuous braking power rating of 1.8 kW, which is the amount of heat it can dissipate without exceeding its temperature limit. A resistive value of 18 Ω sets the current that flows for a given DC bus voltage and influences the braking effect available to the drive system. During a single deceleration event, it may absorb up to 72 kWs of energy, and conduction is limited to 4 s per event. The maximum cumulative on-time is 120 s before the resistor must cool, allowing its thermal mass and convection surfaces to return to a stable temperature and helping prevent insulation damage.

For cabinet installation, the housing weight is 6.6 kg, the overall height is 549 mm, the width is 275 mm, and the depth is 120 mm. These dimensions allow the device to mount on vertical panels while leaving room for airflow across the finned surfaces. Its tall, narrow shape helps it fit beside contactors or circuit breakers without blocking ventilation paths. The overall form also makes it easier to place the resistor in compact electrical enclosures where braking components must be kept separated from more heat-sensitive control hardware.