Product Description:

The HNF01.1B-A100-E0300-N-480-NNNN is a three-phase mains filter manufactured by Bosch Rexroth Indramat. Installed ahead of servo drives and inverters, it suppresses conducted high-frequency noise on the supply leads so the complete automation cell maintains electromagnetic compatibility with adjacent equipment. It is placed on the incoming power side, where it reduces noise before it reaches connected drive electronics. By conditioning the mains input at the cabinet entry, it also helps keep switching interference from returning to the wider power network.

This filter carries a degree of protection of IP00, meaning its components are exposed and the unit must be enclosed inside a control cabinet for safe operation. It fulfills EMC category C1, which limits both emitted and absorbed interference to tighter residential limits under the relevant standard. The permissible mains connection range is 3 × AC 400–480 V with a -15% to +10% tolerance, allowing use on international utility grids at either 50/60 Hz. Internal choke and capacitor networks are sized for this voltage so differential-mode and common-mode attenuation remain effective across the intended frequency range. The supply system note states that the filter is intended for feeding devices only, so it should be installed at the input of drive controllers rather than on regenerative or single-phase loads.

The unit is part of the HNF Mains Filters line and is built in design version 1 under the series 01 numbering scheme. Conformance to DIN EN 61800-3 supports system-level EMC compliance when the filter is used with compatible drives. The open construction simplifies mounting on a back panel, but the surrounding cabinet must provide airflow and touch protection. This layout is suited to enclosed installation, where line-side components can remain accessible for wiring while live parts stay protected during operation.