Product Description:

The HNF01.1C-F240-E0225-A-480-NNNN is a mains filter manufactured by Bosch Rexroth Indramat for the HNF Mains Filters series. Installed between the plant power supply and servo inverters, it limits conducted interference before switching noise can travel back into the facility mains. This placement helps keep high-frequency disturbance from spreading through shared plant wiring and affecting nearby controls, sensors, or other sensitive automation devices. By reducing inverter-generated transients at the line connection, it supports electromagnetic compatibility in multi-axis automation systems.

The unit has a protection level of IP20, so it must be mounted inside a closed electrical cabinet where accidental contact with live parts is prevented. Its input accepts 3 × AC 400 to 480 V, -15% to +10%, 50/60 Hz, allowing direct connection to standard three-phase industrial mains. When connected, the filter maintains emission performance classified as C2 in accordance with DIN EN 61800-3, which is suitable for typical industrial environments with dedicated transformer supplies. It is rated for 6 axes with a maximum cable length of 240 m, so the connected drive count and total motor-cable run stay within the intended leakage-current range. The unit is intended for feeding devices only, so it should not be used on regenerative or back-fed sections where energy returns toward the supply.

The filter is design version 1 in the 01 series, so its layout and connection points match the first engineering release of this product line. This makes the electrical arrangement straightforward when the filter is grouped with servo drives and related line components in the same cabinet. It is used on the supply side of the system, where it conditions incoming mains power before it reaches the inverter input stage. Because the filter sits ahead of the drives, it works at the common line entry point instead of on individual motor outputs. The housing and terminals are arranged for fixed cabinet installation rather than for direct use at the machine load.