Product Description:

The HLR01.1N-04K5-N07R4-A-007-NNNN is a braking resistor module produced by Bosch Rexroth Indramat for the HLR Brake Resistors series. Integrated with drive controllers, it absorbs regenerative energy when a motor decelerates or reverses, preventing DC-bus overvoltage and protecting power electronics. By converting surplus electrical energy into controlled heat, the unit supports consistent drive performance during repetitive stopping, indexing, or high-inertia motion profiles common in automated manufacturing lines. It is suited to axes that return energy to the DC bus during frequent braking events, where that energy must be dissipated outside the drive's switching stage. This function is especially useful on vertical axes, indexing tables, and other motion systems that can feed energy back during fast speed changes.

The module carries a continuous braking power rating of 4.5 kW, so it can dissipate that thermal load continuously without exceeding its temperature limit. For short intervals it endures a peak load of 81 kW, allowing rapid deceleration of heavy axes within a 3 s duty window. A resistance of 8.3 Ω sets the relationship between DC-bus voltage and braking current, which helps keep energy absorption predictable during dynamic stopping. Over one braking cycle, the resistor can absorb 246 kWs before reaching its allowable energy limit. This operating profile fits applications with frequent direction changes or abrupt stops.

Cabinet planning uses an enclosure depth of 490 mm, a width of 300 mm, and a height of 270 mm, dimensions that fit standard rack layouts while leaving space for airflow around the fins. The assembly weighs 9.5 kg, which adds mounting stability and supports heat dissipation during braking operation. Its physical size lets the resistor be placed in control cabinets without taking the space required by larger external braking assemblies. Adequate clearance around the housing helps move generated heat away from nearby components during repeated deceleration cycles.