Product Description:

The HNL01.1E-5700-S0051-A-480-NNNN is a three-phase mains choke manufactured by Bosch Rexroth Indramat and supplied in the HNL Mains Chokes series. Installed between the plant power bus and an inverter front end, it increases line impedance, smooths input current waveforms, and reduces high-frequency disturbances before they reach sensitive drive electronics. By adding inductive impedance ahead of the rectifier stage, it helps moderate current peaks that can otherwise place added stress on upstream distribution hardware. This placement is common in automated systems that use servo or spindle drives and need cleaner incoming power at the cabinet supply point.

The choke has a nominal operating limit of 51 A, so it suits applications whose continuous line draw stays within that value. It accepts line voltages from 400–480 V, allowing use across common industrial supply ranges without requiring a different reactor for each voltage in that band. A housing rated IP10 helps guard against accidental contact with live parts while still allowing natural convection around the magnetic core. It uses a current-compensated winding arrangement to reduce leakage flux and suppress conducted noise on the incoming line. The unit is intended for the feeding side of the converter rather than the motor output, so it serves as a line reactor instead of a load-side filter.

The choke is compatible with 50/60 Hz power systems, which allows installation on standard mains frequencies without adjustment. Within the product hierarchy, it belongs to series code 01, which places it in the first series grouping for this product line. The design version is 1, indicating the first design iteration for this rating. Those identifiers help distinguish the unit when matching a line reactor to the intended drive arrangement and the incoming supply path used in the cabinet.