HLT01.1A-400K-N-007-NNNN Bosch Rexroth Indramat
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MPN: R911325707
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The Bosch Rexroth Indramat HLT01.1A-400K-N-007-NNNN is part of the HLT Braking Units series and has a continuous braking power of 400 kW with a peak power of 750 kW. This unit measures 1150 mm in height, 310 mm in width, and 377 mm in depth, and weighs 70 kg. It requires a cooling air volume of 600 cubic meters per hour and can be mounted at altitudes up to 1000 meters.
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Product Description:
The HLT01.1A-400K-N-007-NNNN is a braking unit manufactured by Bosch Rexroth Indramat and supplied in the HLT Braking Units series. Installed alongside inverter drives, it routes regenerative energy from the shared DC link into an external resistor, preventing bus voltage rises during controlled stops and fault conditions. The module’s cabinet footprint measures 310 mm in width, 377 mm in depth, and 1150 mm in height, with a recommended mounting distance of 110 mm to allow air circulation. A maximum bus-bar gap of 10 mm accommodates safe electrical clearances inside the switchgear panel.
Rated for a continuous absorption capability of 400 kW, the unit can dissipate steady-state braking power that is typical of high-inertia axes running frequent cycles. For short duty peaks, it reaches 750 kW, giving additional headroom when rapid decelerations occur. Each overload event is limited to a 12 s on interval, after which thermal sensors enforce recovery to protect the resistor assembly. Maintaining these figures requires adequate ventilation, and the integrated fan system moves 600 m³/h of cooling air through the heat sink fins. The resistor network requires a minimum resistance of 0.7 Ω; selecting a lower value would exceed the designed current and could trigger overcurrent shutdown.
During continuous service, the enclosure releases up to 1050 W of heat to the control-cabinet environment, so supplementary air extraction may be needed at higher ambient temperatures. Installation is permitted up to 1000 m above sea level without derating, which covers most factory elevations. The casing weighs 70 kg, which should be considered during installation and handling. Power connections use M12 studs that must be tightened to 41 Nm, ensuring low-resistance contact under the dynamic currents associated with regenerative events.
Frequently Asked Questions about HLT01.1A-400K-N-007-NNNN:
Q: What is the continuous braking power capability of the HLT01.1A-400K-N-007-NNNN braking unit?
A: The HLT01.1A-400K-N-007-NNNN braking unit supports a continuous braking power of 400 kW.
Q: What is the peak braking power that the HLT01.1A-400K-N-007-NNNN can handle?
A: This unit achieves a peak braking power of 750 kW for short-duration load events.
Q: What is the minimum braking resistance specification for the HLT01.1A-400K-N-007-NNNN?
A: The minimum braking resistance required for this model is 0.7 Ω.
Q: How much cooling air does the HLT01.1A-400K-N-007-NNNN braking unit need?
A: It requires a cooling air volume of 600 cubic meters per hour to maintain optimal thermal conditions.
Q: What is the maximum permissible installation altitude for the HLT01.1A-400K-N-007-NNNN?
A: The maximum installation altitude for this braking unit is 1000 meters.
