HLR01.1N-0780-N07R0-A-007-NNNN Bosch Rexroth Indramat
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MPN: R911305933
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The Bosch Rexroth Indramat HLR01.1N-0780-N07R0-A-007-NNNN is part of the HLR Brake Resistors series. This brake resistor provides a braking power of 0.78 kW with a resistance of 8.2 ohms and operates at a DC bus voltage of 700 V. The unit features an IP20 protection rating, measures 300 mm in height, 223 mm in width, 210 mm in depth, and weighs approximately 5.5 to 6.2 kilograms.
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Product Description:
The HLR01.1N-0780-N07R0-A-007-NNNN brake resistor is produced by Bosch Rexroth Indramat within the HLR Brake Resistors series. It is installed across the DC bus of an inverter to dissipate surplus regenerative energy as heat, preventing overvoltage events during rapid deceleration or load reversals in industrial drive systems. Supplied as a standalone module, the device adds dynamic braking capability to servo axes and variable-speed drives without altering the existing control architecture. This braking method helps stabilize the DC bus during aggressive speed changes in automated machinery.
The resistor’s permanent braking capacity is rated at 0.78 kW, meaning it can continuously convert that amount of electrical power into thermal energy. Its resistance value is 8.2 Ω, which sets the current drawn from a DC 700 V bus and affects both heat generation and peak braking torque in the connected drive. Mechanical integration is simplified by a housing depth of 210 mm, and this compact profile fits standard drive cabinets while still allowing airflow around the fins. For single-event stops, it can absorb energy for a 1 s duty cycle, matching typical emergency-stop profiles in packaging, printing, or material-handling equipment.
During repeated cycles, the resistor can accept up to 93 kWs of energy before its thermal limit is reached, so sizing calculations can include cumulative brake pulses rather than only instantaneous power. Overall height is 300 mm, leaving enough clearance for wiring bends above and below the body. The maximum on-time window of 120 s indicates how long the element may remain energized in intermittent service without exceeding its surface temperature ceiling. An IP20 rating shields the live parts from accidental finger contact yet requires mounting inside a ventilated enclosure to avoid airborne liquids. Open mounting space around the enclosure helps heat escape during repeated deceleration cycles, and the 223 mm width helps when laying out cabinet space around adjacent components.
