Product Description:

The HLT05.1W-105K-N-11-NNNN braking unit is produced by Bosch Rexroth Indramat and belongs to the HLT Braking Units series. This component connects to the common DC link of modular drive systems and converts surplus kinetic energy into heat inside its resistor stack. By channeling regenerated power away from the inverter during fast stops or when lowering driven loads, the module protects upstream converters from over-voltage and supports reliable speed regulation in automated conveyor, press, and gantry installations.

The unit ties into a DC rail limited to DC 1100 V, so its internal circuitry must clamp any regenerated surge below that threshold. Excess energy is expelled through a finned resistor bank that relies on Air Cooling; no auxiliary liquid loop is required, simplifying cabinet layouts. Thermal loading is defined for a 60 s duty window, within which the device can accept overload peaks of 2 s at a discharge rate of 205 kW. Outside those bursts, the permanent braking channel manages a steady 400 W of self-losses to keep component temperatures within design limits. With a height of 475 mm, a width of 125 mm, and a depth of 229 mm, the module fits standard rack spaces without exceeding common enclosure clearances.

During continuous regeneration the resistor network is rated for 105 kW of braking power, allowing long deceleration ramps when conveyors or spindles run at high inertia. The open-frame assembly carries a IP00 protection code, so it must be mounted inside a grounded control cabinet with forced airflow. Installation weight is just 7.5 kg, easing panel handling and minimizing structural load on slide-in rails. When sized with compatible drive inverters, the stated mechanical envelope and low mass permit straightforward retrofits while the specified dimensions leave space for ducting that maintains the required ambient flow across the heat sink fins.