Product Description:

The HLL05.1F-04M0-S0603-N-D7-01U2-NNNN is a passive line reactor in the HLL Bus Chokes series manufactured by Bosch Rexroth Indramat. Installed between a drive’s rectifier and its intermediate circuit, this choke smooths the direct-current link and limits peak inrush energy, contributing to lower harmonic distortion in multi-axis automation cabinets. Its design suits drive systems that operate on high-power common DC buses and need additional inductance to protect semiconductor bridges and capacitors from transient stress.

The unit is dimensioned for a nominal current of 603 A, so it can be wired into large inverter groups without additional parallel chokes. It is intended for DC networks that remain below DC 750 V; this voltage limit relates to the insulation class and creepage distances inside the winding stack. The assembly carries a protection level of IP00, indicating that it must be installed in an enclosed panel to avoid accidental contact with live parts. Its terminals can switch alternating circuits up to 250 V and direct circuits up to 24 V, covering typical service tasks such as isolation of auxiliary sensors or discharge resistors. A temperature contact is embedded in one winding and opens when the copper reaches the rated threshold, providing warning before thermal overload occurs.

Mounting slots sized 2 × 11 mm allow the choke to be fixed directly to a backplate with standard M10 hardware, which helps prevent vibration that could fatigue the conductor lugs. Each contact point is made from aluminum, which lowers joint resistance during electrical connection. The thermal switch reacts at 160 °C and is wired as an N/C circuit, so it remains closed during normal operation and signals a fault when it opens. The sensor is positioned on one winding, which is the hottest point during continuous current flow, to provide a conservative thermal reference.