PSI6300.737-L1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI6300.737-L1 is a medium frequency inverter from the PSI Frequency Inverters series. It supports a mains voltage of 400 to 480 VAC and operates at either 50 or 60 Hz. The inverter is air cooled, features IP20 degree of protection, and weighs approximately 20 kilograms.
Internal Product Review
The PSI6300.737-L1 is a medium frequency inverter that stands out for clean engineering and dependable drive control. Air-cooled construction and IP20 protection make the unit a strong fit for enclosed industrial installations. Support for 400-480 VAC mains and 50 or 60 Hz input gives the inverter excellent integration flexibility.
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Product Description:
The PSI6300.737-L1 frequency inverter is produced by Bosch Rexroth Indramat and belongs to the PSI Frequency Inverters series. As a medium-frequency inverter, it modulates three-phase mains power so induction furnaces, heat-treatment generators, and similar equipment can operate within selected kilohertz ranges without mechanical converters. Within an automation cell, the unit acts as the power stage while a PLC or motion controller provides operating commands and setpoints. Its integrated communication functions also allow the surrounding control system to coordinate power delivery with other machine processes.
The inverter connects to a plant supply ranging from 400 to 480 VAC and accepts line frequencies of 50 or 60 Hz, making it compatible with standard European and North American power systems. Its front terminals provide a built-in 24 VDC control supply capable of delivering up to 2 A. This auxiliary supply can power contactors, sensors, or fieldbus nodes without requiring a separate converter. Forced-air cooling removes heat from the power electronics, which release up to 360 W during operation. Cabinet airflow must remain unobstructed so the generated heat can leave the enclosure without causing excessive internal temperatures. The component enclosure has an IP20 protection rating, so the inverter must be installed inside a suitable cabinet that prevents direct contact with live parts. Adequate spacing around the ventilation path is necessary to support continuous operation under load.
The inverter can operate at ambient temperatures ranging from +10 to +55 °C, which suits machinery halls with controlled indoor conditions. During transportation or warehouse storage, it tolerates temperatures ranging from -25 to +70 °C. Its climatic classification is 3K3 according to EN 60721-3-3, indicating suitability for stationary use in weather-protected locations. Timing and diagnostic functions are managed through an Ethernet-based timer interface, reducing the need for separate relay modules and simplifying internal cabinet wiring. The communication interface carries control information between the inverter and the automation system while supporting centralized monitoring of operating conditions. The medium-frequency topology has a mass of approximately 20 kg, which must be considered when selecting cabinet supports and mounting hardware.
