PSI6300.750-L2 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI6300.750-L2 is a medium frequency inverter from the PSI Frequency Inverters series. It operates with a mains voltage of 480 to 690 VAC, supports a nominal mains current of 110 Amps, and features air cooling with cabinet losses at maximum output of 200 Watts. The inverter offers an output frequency up to 1 kHz, an IP20 protection rating, and a maximum operating altitude of 2000 meters.
Internal Product Review
The PSI6300.750-L2 is a Bosch Rexroth Indramat medium frequency inverter with a 480 to 690 VAC mains voltage range. Air-cooled construction and IP20 protection support dependable cabinet integration in industrial power applications. A 1 kHz output frequency stands out as a strong performance feature for precise medium-frequency operation.
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Product Description:
The PSI6300.750-L2 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat within the PSI Frequency Inverters series. Intended for integration in industrial automation cells, the unit converts three-phase utility voltage into a controllable medium-frequency output so that induction heaters, high-frequency transformers, or specialized actuators can be supplied from a single cabinet. As a cabinet-mounted device, it relies on forced airflow through the chassis rather than separate heat sinks.
Electrically, the inverter accepts a three-phase supply between 480 – 690 VAC and delivers an output that can be modulated up to 1 kHz for process control. The line side can draw a maximum primary current of 800 A, while the output bus can tolerate short-duration secondary peaks of 36 kA. During continuous operation, the mains current stabilizes near 110 A, allowing standard fuses and contactors to be sized accordingly. To accommodate these currents, the power terminals support conductors up to 50 mm², and the installation guide calls for a dedicated 35 mm² cable pair between the inverter and the load. A minimum clearance of 100 mm above and below the frame preserves airflow, and the assembly is classified as Class A equipment for industrial environments.
Thermal management uses an air-cooled path that removes cabinet heat; at full power, the inverter contributes 200 W of cabinet heat, and total cooling losses can reach 420 W when auxiliary components are active. The enclosure carries a protection rating of IP20 and uses a 3 mm gasket on the door flange to keep fingers and debris away from live parts. Climatic rating 3K3 permits operation in control rooms where temperature and humidity are limited, and performance remains unchanged up to a mounting altitude of 2000 m. An EtherNet timer channel provides external run-time coordination with the plant PLC.
