Product Description:

The HNF01.1A-M900-E0051 is a mains filter produced by Bosch Rexroth Indramat and installed within the HNF Mains Filters series for drive supply networks. The unit is connected between the plant's power source and the inverter group to attenuate conducted electromagnetic noise before it propagates along the line. By meeting the requirements of multi-axis machinery, the filter helps keep high-speed servo systems stable and compliant with industrial automation EMC limits while feeding up to fifteen axes over cabling runs that reach 900 m. Its role is to reduce line-side interference generated by connected drive electronics before that noise reaches other equipment on the same supply.

This filter supports a continuous load current of 51 A and can withstand short events up to 77 A without saturation of its inductive elements. Both input and output leakage currents are limited to 2 A maximum, while phase-to-ground insulation is rated at 15 MΩ or higher. The design belongs to EMC category C3 in accordance with DIN EN 61800-3, so it is intended for industrial environments with dedicated transformer feeders. The protection housing carries an IP20 ingress rating, and the circuitry tolerates line voltage variations of ±10%. The note "for feeding devices only" means the filter is used as part of an integrated drive package rather than as a standalone power conditioner. Internal losses remain limited under rated loading.

The housing is 440 mm high, 100 mm wide, and 262 mm deep. The steel enclosure weighs 15 kg and is constructed without asbestos or silicone. Heat generated inside the assembly reaches a maximum of 91 W, so convection spacing must be maintained. Power lugs accept IEC conductors up to 16 mm² or, for North American wiring, UL-listed 6 AWG. Terminals are clamped with a maximum tightening torque of 2.3 Nm, and the filter is delivered as design version 1.