Product Description:

The HNF01.1A-A075-E0309-A-500-NNNN is a mains filter from Bosch Rexroth Indramat in the HNF Mains Filters series. Installed ahead of an HMV or HCS inverter, it reduces conducted line noise before it reaches the drive and helps keep interference from returning to the supply network. This role gives a single motion axis a cleaner incoming power path and supports electromagnetic compatibility in industrial automation equipment.

This filter carries a nominal load of 309 A, allowing it to serve high-capacity drive stacks without magnetic saturation under normal operating conditions. It accepts up to 3 AC 480 V on the supply side, which matches the voltage class used by many plant mains transformers and larger inverter sections. Because the network connection is 3-phase, the device attenuates differential and common-mode interference across all conductors. Its housing has an IP20 rating, so the unit is intended for closed control cabinets rather than open machine mounting. Electromagnetic emission performance falls under category C3 in accordance with DIN EN 61800-3, which suits industrial installations that are electrically separated from public low-voltage grids.

Cable sets between the filter and the inverter can reach 75 m without exceeding the stated impedance limit, which gives more freedom when the supply section and drive are mounted in different cabinet locations. The enclosure uses a width of 175 mm, a height of 263 mm, and a depth of 180 mm, so it fits into control panels where vertical space and clearance around busbars must be managed carefully. The single-axis design is version 1 and is intended for systems that supply one device. Its mounting format matches the through-hole pattern used across the HNF family, which helps it fit cleanly into cabinet layouts based on that platform.