PSI63C0.733-L1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI63C0.733-L1 is a medium frequency inverter from the PSI Frequency Inverters series. It features air cooling, IP20 protection, and operates at a mains voltage of 400 to 480 VAC with a mains frequency of 50 or 60 Hz. This inverter has an integrated power supply output of 24 VDC at a maximum of 2 Amps and weighs approximately 20 kilograms.
Internal Product Review
The PSI63C0.733-L1 is a Bosch Rexroth Indramat medium frequency inverter with 400 to 480 VAC mains input and air-cooled operation. IP20 protection supports clean cabinet integration in controlled industrial environments. An integrated 24 VDC power supply rated to 2 A adds practical system support and stands out as a strong design feature.
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Product Description:
The PSI63C0.733-L1 is a medium-frequency inverter produced by Bosch Rexroth Indramat for the PSI Frequency Inverters series. It converts factory three-phase power into a controllable higher-frequency output that lets CNC controllers or process PLCs vary spindle speed, induction-heating intensity, or other motor-driven functions without mechanical adjustment. The device therefore plays a direct role in energy-efficient, closed-loop automation where precise electrical frequency is needed to match dynamic load demands.
This model connects to mains supplies from 400 to 480 VAC and operates at line frequencies of 50 or 60 Hz, making it compatible with most industrial distribution grids. Its steel enclosure carries a protection rating of IP20, so it must be mounted inside a switch cabinet to avoid dust exposure and accidental contact. Thermal management relies on an air-cooled design; the internal power stage releases up to 360 W of heat that must be removed by cabinet airflow. A built-in power supply provides power to the control electronics, and the overall assembly weighs 20 kg, which must be considered when selecting panel supports and lifting fixtures for installation.
The auxiliary supply feeds external sensors or relays at 24 VDC with a maximum current of 2 A, eliminating the need for a separate DIN-rail supply in many cabinets. The inverter is rated for climatic category 3K3 according to EN 60721-3-3, allowing it to tolerate moderate humidity and noncondensing dust commonly found in machine halls. Continuous operation is supported at ambient temperatures from +10 to +55 °C, while storage temperatures from -25 °C to +70 °C protect spare units kept in unheated warehouses. For supervisory control, the timer function is implemented over an Ethernet interface, enabling cycle timing or remote soft-start commands through existing plant networks.
