HLR01.1N-44K0-N03R3-B-007-NNNN Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
Wake Industrial LLC is not an authorized distributor of this product.
MPN: R911325710
Ask for AvailabilityThe Bosch Rexroth Indramat HLR01.1N-44K0-N03R3-B-007-NNNN is part of the HLR Brake Resistors series and features a continuous power rating of 44 kW with a peak power of up to 187 kW at 785 VDC. This brake resistor is self-cooled, has an IP23 protection class, and supports free assembly mounting style. It weighs 101 kg and is capable of maximum energy absorption of 3550 kWs.
Internal Product Review
The HLR01.1N-44K0-N03R3-B-007-NNNN is a Bosch Rexroth Indramat brake resistor with 44 kW continuous power and self-cooling operation. A 3.3 Ω resistance value and IP23 protection support dependable braking performance in demanding drive systems. Free-assembly mounting adds installation flexibility, and 187 kW peak power at 785 Vdc stands out as a strong performance advantage.
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Product Description:
The HLR01.1N-44K0-N03R3-B-007-NNNN is a DC-bus brake resistor engineered by Bosch Rexroth Indramat for the HLR Brake Resistors series. The component connects to converter or servo drive units and converts regenerative electrical energy into heat during deceleration cycles, which helps protect power electronics from overvoltage. It is used where controlled braking is required in automated machinery with a shared DC bus.
The unit delivers continuous dissipation of 44 kW, meaning it can convert that amount of electrical power into heat during steady operation without exceeding its temperature range. During short, high-energy stops, it accepts up to 3550 kWs of energy before cooling time is required. Peak power handling reaches 140 kW at a 680 V DC link and rises to 187 kW when the link is 785 V DC, allowing compatibility with common servo drive bus voltages. Cabling uses a conductor cross-section of 50 mm², which helps keep current density within safe limits. Cooling is provided by self-cooling airflow, and the IP23 housing with a free-assembly mounting style supports installation in switchgear cabinets or machine frames. The physical dimensions are 995 mm wide, 770 mm high, and 490 mm deep.
A nominal resistance of 3.3 Ω sets the current drawn from the DC bus during braking. The thermal relay should be adjusted to 115 A so that the circuit disconnects if overheating occurs. Surface temperature may climb to 250 °C under severe load, so adjacent components need suitable clearance and shielding. The steel enclosure weighs 101 kg, which adds thermal mass between successive braking events. The design does not require active fans or liquid cooling, which keeps installation simpler in enclosed electrical assemblies.
