Product Description:

The PSI6300.773-L1 belongs to the PSI Frequency Inverters series manufactured by Bosch Rexroth Indramat. It is a medium-frequency power converter that conditions three-phase utility power so an automation controller can operate induction coils, furnaces, or welding heads at the required process frequency. By integrating control electronics and an auxiliary power supply, the unit reduces panel wiring and provides a dedicated interface for sequencing, process monitoring, and fault handling in automated production cells.

The power section accepts a line supply of 400–480 VAC at 50 or 60 Hz, matching common industrial power systems without requiring external transformers. Its IP20 protection rating prevents accidental finger contact with live parts when the inverter is properly installed inside a closed cabinet. An internal auxiliary power module supplies 24 VDC at up to 2 A for sensors, contactors, and the Ethernet-based timer circuit that coordinates output bursts with machine commands. Forced-air passages remove heat generated during power conversion and help maintain acceptable internal temperatures during operation. Maximum cooling losses are 360 W, which must be considered when selecting cabinet airflow or heat-exchanger capacity.

The inverter operates within a temperature range of +10 to +55 °C, while its permitted storage range extends from -25 °C to +70 °C. It is classified as 3K3 under EN 60721-3-3, indicating suitability for light industrial conditions with controlled humidity and dust exposure while excluding corrosive atmospheres. Air cooling eliminates the need for external liquid lines, although the ventilation paths and cabinet filters require unobstructed airflow to remove accumulated heat effectively. With a shipping mass of approximately 20 kg, the unit can be secured to standard 19-inch or custom panels using aligned mounting brackets. Adequate clearance around the air inlet and exhaust openings helps prevent recirculation of heated air inside the enclosure.