Product Description:

The Bosch Rexroth Indramat PSI6300.373-L1 is a cabinet-mounted inverter in the PSI Frequency Inverters series. It is classified as a medium-frequency inverter and converts three-phase plant power into controlled medium-frequency output for induction heating coils, spindle motors, or other loads that require adjustable frequency in automated lines. Within automation cells, the unit sits between the main switchgear and the load, providing regulated current while the associated drive controller executes process sequences. This arrangement supports stable power delivery during production steps that depend on repeatable electrical output.

The inverter accepts a three-phase input of 400–480 VAC at 50/60 Hz and uses an air-cooled heat sink to manage switching losses. Its logic circuits are powered from 24 VDC, and a standard CPU supervises modulation tasks while exchanging process data over the INTERBUS I/O link, which also supports the timer function used by this model. Under continuous duty, the power section can deliver 110 A of thermal current, and it can supply bursts up to 800 A to accommodate dynamic load steps. Copper conductors from 35 mm² up to a terminal capacity of 50 mm² can be connected, allowing feeder selection to match the installation length and load arrangement.

Cabinet dissipation starts at 69 W when the inverter idles and rises to 170 W at rated power, while the integrated airflow path can exhaust a maximum cooling loss of 360 W without external chillers. The design is rated IP20, so it must be installed inside a control enclosure where the ambient temperature remains below 55 °C. For secondary circuits such as work coils, the power section can furnish peak pulses reaching 36 kA, which suits short-duration, high-frequency heating or forming duties. Segregated power and control compartments keep INTERBUS wiring clear of high-current conductors and make internal routing easier to follow.