HLR01.1N-34K0-N0R45-A-007-NNNU Bosch Rexroth Indramat
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MPN: R911311698
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The Bosch Rexroth Indramat HLR01.1N-34K0-N0R45-A-007-NNNU is part of the HLR Brake Resistors series and is designed for use with IndraDrive C drives. It has a continuous power rating of 34 kW, a resistance of 0.45 ohms, and operates at a DC bus voltage of 700 VDC. The resistor uses a fixed topology, features an IP20 protection rating, and supports free assembly mounting.
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Product Description:
The HLR01.1N-34K0-N0R45-A-007-NNNU brake resistor is produced by Bosch Rexroth Indramat and belongs to the HLR Brake Resistors series. As an external energy-dissipation module, it connects to the DC link of an IndraDrive inverter so that surplus regenerative energy is converted to heat instead of causing overvoltage in the drive. This function is essential in industrial automation axes that decelerate heavy loads, because the resistor helps keep the intermediate circuit voltage within safe limits and protects semiconductor components during braking cycles. When a motor-driven axis slows down, returned energy must be removed in a controlled way so the inverter can continue operating normally.
The resistor can absorb a continuous thermal load of 34 kW, allowing frequent or extended braking without overheating. Its element value is 0.45 Ω, and this resistance sets the current that flows at a given DC-bus voltage and the resulting rate of energy dissipation. The unit is sized for DC bus levels up to 700 VDC, matching the typical link voltage produced by IndraDrive converters running from a three-phase mains supply. A housing rated at IP20 guards live parts against incidental contact while permitting convection airflow through the fin structure. The element uses a fixed resistor design, so its operating behavior remains predictable during repeated braking events.
A brake chopper is required to switch the resistor in and out of the link, and the HLR01.1N model is wired to the transistorized chopper inside the inverter. Drive compatibility is limited to the IndraDrive C platform, which keeps the resistor matched to the intended drive family. The unit uses free assembly mounting, so it can be placed on a panel or frame where adequate airflow is available. Proper placement is important because the resistor releases braking energy as heat during rapid deceleration, frequent stops, and other repeated duty cycles that return energy to the drive.
Frequently Asked Questions about HLR01.1N-34K0-N0R45-A-007-NNNU:
Q: What is the continuous power rating of the HLR01.1N-34K0-N0R45-A-007-NNNU resistor?
A: This brake resistor is rated for a continuous power of 34 kW, enabling it to handle demanding braking operations.
Q: What is the resistance value of this Bosch Rexroth brake resistor?
A: The HLR01.1N-34K0-N0R45-A-007-NNNU has a resistance of 0.45 Ω, ensuring efficient energy dissipation during braking.
Q: Does the HLR01.1N-34K0-N0R45-A-007-NNNU require a brake chopper for use?
A: This brake resistor requires a brake chopper to operate correctly in a drive system.
Q: Which drive systems are compatible with this brake resistor?
A: The HLR01.1N-34K0-N0R45-A-007-NNNU is compatible with IndraDrive C drive systems for seamless integration.
Q: What level of environmental protection does this brake resistor provide?
A: Offering a protection rating of IP20, this resistor is protected against solid objects larger than 12.5 mm but is not protected against water.
