Product Description:

The HVR03.1-W045N/S025 is a power supply unit produced by Bosch Rexroth Indramat for the HVR Power Supply Units series. Installed in a Rexroth drive cabinet, it converts three-phase mains energy into a stabilized DC link for several servo drives, enabling coordinated axis motion and regenerative braking in automated machinery. It is used in medium-power packaging lines, printing presses, and gantries where a centralized DC link simplifies wiring and supports multiple connected axes. By feeding several drives from one source, the unit allows recovered braking energy to remain available on the common bus instead of being handled separately by each axis. That arrangement is useful in machines where several motion axes start and stop in close sequence.

Thermal management uses internal air cooling with a built-in blower, so no external ducting is required and cabinet temperatures stay within limits. The supply draws power through a mains connection of 3 x AC 380 V to 480 V (±10%), which keeps the unit compatible with many industrial grids while tolerating normal line fluctuation. On the secondary side, it provides a regulated DC bus voltage, which removes the need for individual drive rectifiers and helps maintain stable torque during load changes. The converter stage can transfer up to 45 kW to or from the DC link, and the unit is design version 1. This bidirectional power flow allows braking energy from one axis to be used by other connected drives on the common bus.

This supply pairs with DIAX or Ecodrive inverters that use a common DC bus. The modular layout of the HVR Power Supply Units series allows installations to be scaled, and model 03 matches the corresponding mounting rails and connector sets. Because the input is three-phase, phase balancing is improved and harmonic currents are reduced, which helps maintain power quality targets. The shared-bus arrangement also suits multi-axis cabinets where several inverters operate from one centralized supply section.