HLL05.1F-04M0-S0202-N-11-01U2-NNNN Bosch Rexroth Indramat
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The Bosch Rexroth Indramat HLL05.1F-04M0-S0202-N-11-01U2-NNNN is a water-cooled bus choke in the HLL Bus Chokes series, designed with an inductance of 4 mH and a continuous current rating of 202 Amps. It supports a nominal DC bus voltage of 1100 V, offers leakage capacitance of 1.2 microfarads, and weighs 23 kilograms. The choke operates at an ambient temperature up to 40 °C, with protection rated at IP00 and a power dissipation of 230 Watts.
Internal Product Review
The HLL05.1F-04M0-S0202-N-11-01U2-NNNN is an HLL bus choke with 4 mH inductance and a DC 1100 V nominal bus rating. Water-cooled construction and 202 A continuous current make the unit a strong match for high-load drive systems. A 160 °C temperature switch trigger adds valuable thermal protection for demanding applications.
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Product Description:
The HLL05.1F-04M0-S0202-N-11-01U2-NNNN is a bus choke manufactured by Bosch Rexroth Indramat within the HLL Bus Chokes series. In an automation cabinet, it is wired in series with the DC link to add inductance, filter high-frequency noise, and reduce peak charging currents that would otherwise stress capacitors and semiconductor devices. By tempering these electrical transients, the choke contributes to consistent motor torque production and extends component life throughout multi-axis drive systems used in machining centers, packaging lines, and other continuous-duty installations.
Thermal stability is handled through a water-cooled jacket that removes the heat generated by copper and core losses, and the 0.7 l filling capacity keeps the liquid circuit compact while keeping the winding below its design limit. Under rated conditions, the choke carries 202 A of continuous DC current, and its magnetic path presents an inductance of 4 mH, which limits how quickly the link current can rise or fall. The assembly is dimensioned for converters that operate on a link voltage of DC 1100 V, and at this level it dissipates only 230 W into the coolant, supporting long-term operation with a maximum water inlet temperature of 60 °C.
Electrical side effects are minimized by a leakage capacitance of 1.2 µF, which keeps displacement currents low and improves drive EMC. The open-frame protection rating of IP00 requires installation inside a grounded enclosure, but it allows free conduit routing to the normally closed switch that trips at a coil temperature of 160 °C. This contact is rated for 1 A and 250 V AC and ties into drive interlock circuits. The choke weighs 23 kg, fits in cabinets designed for 40 °C ambient air, and can still be used up to 55 °C with derating of its current capacity.
