HLL05.1F-04M0-S0380-N-11-01U2-NNNN Bosch Rexroth Indramat
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The Bosch Rexroth Indramat HLL05.1F-04M0-S0380-N-11-01U2-NNNN is part of the HLL Bus Chokes series and has a weight of 33 kilograms. It features a continuous current rating of 380 amps and an inductance of 4 millihenries. The choke operates at a nominal DC bus voltage of 1100 volts DC and has a maximum ambient temperature of 40 degrees Celsius.
Internal Product Review
The HLL05.1F-04M0-S0380-N-11-01U2-NNNN is a Bosch Rexroth Indramat HLL bus choke rated for 380 A continuous current with 4 mH inductance. Water-cooled design handles 580 W power dissipation and fits demanding 1100 V DC bus applications with dependable filtering behavior. A low 0.19 bar pressure drop at 6 l/min is a strong advantage for efficient thermal circuit integration.
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Product Description:
The HLL05.1F-04M0-S0380-N-11-01U2-NNNN is a liquid-cooled bus choke produced by Bosch Rexroth Indramat within the HLL Bus Chokes series. It is installed in the DC link of large inverter or drive packages to add inductance, attenuate ripple, and protect downstream components from current spikes. By moderating energy flow between rectifier and drive modules, the choke helps maintain stable operation of high-power industrial automation systems such as presses, extruders, and multi-axis motion lines.
The unit carries a continuous current of 380 A, allowing it to accompany multi-drive groups on a common DC bus. Its core inductance is 4 mH, which stores magnetic energy and smooths high-frequency components of the bus waveform. The device is designed for a nominal DC link voltage of 1100 V DC, matching the output of the associated rectifier stacks. Liquid cooling is provided through an internal channel with a filling capacity of 1.1 L, and proper operation requires a minimum coolant flow of 6 l/min, which produces a pressure drop of 0.19 bar across the circuit. The housing can tolerate a maximum operating pressure of 4 bar, and the inlet water temperature may reach 60 °C without affecting performance. Heat removed by the coolant keeps the winding temperature below the embedded thermal contact's actuation point.
The maximum ambient air temperature for this choke is 40 °C, and external derating is necessary above that value. An integrated normally closed temperature switch opens at 160 °C and is wired through contacts rated for 1 A at 250 V AC or 24 V DC, enabling the control system to shut down the drive if internal overheating occurs. Under rated coolant flow, the exchanger removes 580 W of thermal loss, which helps maintain electrical efficiency and reduce insulation stress. The magnetic assembly and cooling jacket weigh 33 kg, permitting rigid panel or frame mounting without additional structural reinforcement.
