Product Description:

The RZM01.1-6-165 is a three-phase motor filter manufactured by Bosch Rexroth Indramat for use in motor-drive systems. Installed between the drive controller and the motor, this filter limits differential and common-mode noise so that cable-borne interference does not return to the supply or radiate into nearby control wiring. By attenuating high-frequency switching edges, it helps protect motor insulation, reduces electromagnetic emissions, and supports compliance with industrial EMC requirements.

The filter accepts a line supply of 3 × AC 380–400 V ±15 %, allowing operation on standard low-voltage three-phase networks with reasonable tolerance for mains variation. Its maximum rated current is 165 A, meaning the conductors, terminations, and thermal layout support continuous conduction at that level without exceeding the permissible temperature rise. When the connected inverter uses a 4 kHz PWM carrier, the filter can still carry that full current, but at an increased switching frequency of 8 kHz, magnetic losses rise and the continuous rating drops to 135 A. These current limits help determine suitable fuses, busbars, and cooling paths while preserving the inverter's intended pulse pattern. The stated operating range makes the unit suitable for medium-power servo or spindle drives where long motor cables or stricter emission control require additional filtering.

The filter belongs to the RZM Motor Filters series and uses Design 1 on Line 1. A power loss of 400 W during nominal operation must be removed by enclosure airflow or external heat sinking, and this heat load should be considered when the filter is installed near other high-dissipation components. Restricted airflow around the housing can raise cabinet temperature, so the installation should allow enough thermal clearance for stable operation.