HLL01.1A-138U-N0558-C-008-0558-NNNN

The Bosch Rexroth Indramat HLL01.1A-138U-N0558-C-008-0558-NNNN bus choke is a high-performance component in the HLL Bus Chokes series designed for demanding industrial automation environments. Featuring a robust design with a 351 A current rating and an inductance of 138 µH, this unit delivers reliable power filtering to protect drive systems from voltage spikes and harmonics. Engineered by Bosch Rexroth Indramat, the HLL01.1A-138U-N0558-C-008-0558-NNNN combines precise manufacturing with stringent quality control, ensuring consistent performance under heavy industrial loads. With a sturdy construction weighing 36 kg and compact dimensions, it integrates seamlessly into control cabinets where space optimization and safety are key design drivers. This bus choke provides the essential electromagnetic compatibility required to maintain system stability in complex automation installations.

The detailed technical specifications of the HLL01.1A-138U-N0558-C-008-0558-NNNN underscore its suitability for industrial applications. It operates on a nominal voltage of 3 AC 400 V and sustains a maximum frequency of 200 Hz at a switching frequency of 4 kHz, allowing high-speed switching converters to function optimally. The device exhibits a power loss of 270 W under rated load, with a protection category of IP20 safeguarding against solid objects down to 12 mm while permitting adequate ventilation. Physical dimensions include a width of 340 mm, height of 240 mm, and depth of 377 mm, with an installation height up to 1000 m above sea level. Compliance with EN 61800-5-1 and EN 61800-3 standards ensures both safety and electromagnetic compatibility, meeting the rigorous requirements of modern drive systems.

Operationally, the HLL01.1A-138U-N0558-C-008-0558-NNNN excels in harsh industrial environments by maintaining performance across a temperature range of 0 to +40 °C. Its integrated air cooling system efficiently dissipates heat generated during continuous operation, reducing the risk of thermal overload and extending component life. The choke’s high inductance rating smooths current ripple, minimizing electrical noise and enhancing overall drive efficiency. With a weight of 36 kg, the unit offers mechanical stability, and its modular design simplifies maintenance and replacement procedures. The combination of reliable current filtering and robust thermal management contributes to improved uptime and lower lifecycle costs.

System integration of the HLL01.1A-138U-N0558-C-008-0558-NNNN is straightforward within Bosch Rexroth Indramat drive ecosystems as well as third-party configurations. Its standardized enclosure and terminal layout facilitate rapid installation in control panels, while adherence to international standards supports global deployments. Ideal target applications include high-power servo and inverter drives in industrial automation, packaging machinery, material handling systems, and machine tool drives where power quality and regulatory compliance are critical. The HLL series bus chokes are particularly suited to OEMs and system integrators seeking reliable electromagnetic interference (EMI) mitigation and enhanced drive performance.