Product Description:

The HNL01.1E-0280-N0050-N-380-NNNN mains choke is produced by Bosch Rexroth Indramat as part of the HNL Mains Chokes series. Installed on the incoming side of a three-phase supply, the device adds inductance that limits inrush current and smooths harmonic distortion before power reaches drives or frequency converters. By reducing steep current gradients, it helps control semiconductor switching losses and supports longer service life in automation equipment such as machining centers, packaging lines, and conveyor drives. This behavior also lessens electrical stress during startup and helps smooth the current drawn from the supply network.

The coil operates within a mains connection voltage range of 3 x AC 380 V -10% to 3 x AC 600 V +20%, so the same unit can serve low-voltage and elevated-voltage plants without retapping. The declared degree of protection is IP00, so live parts remain exposed and the component must be mounted inside a closed cabinet with forced airflow. Because the enclosure rating is open, the choke is intended for protected cabinet installation instead of direct exposure on the machine. Design version 1 identifies the mechanical layout and terminal orientation used for this release. The supply system is classified as Feeding, which means the choke conditions incoming mains power rather than regenerated inverter energy.

The unit is part of the HNL Mains Chokes family and uses series code 01. Its copper windings are sized for medium-power installations and are compatible with multiple drive families from the same manufacturer. That allows one choke type to serve several cabinet-based systems that need added line inductance ahead of drives or frequency converters. The arrangement suits applications where stable input current behavior is important during normal operation and startup.