PSI6300.333-W1 Bosch Rexroth Indramat
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MPN: R911170470
The Bosch Rexroth Indramat PSI6300.333-W1 is a medium frequency inverter from the PSI Frequency Inverters series. It features a mains voltage range of 400 to 480 VAC and a maximum output current of 800 Amps. This water-cooled inverter has a cabinet loss of 110 Watts and a protection rating of IP20.
Internal Product Review
The PSI6300.333-W1 is a medium frequency inverter configured as a 3-phase MF inverter for demanding industrial power conversion. Water-cooled construction with 4 l/min cooling flow supports dependable thermal control in continuous-duty service. IP20 protection and 800 A maximum output current make this unit an excellent fit for high-current inverter applications.
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Product Description:
The PSI6300.333-W1 inverter is manufactured by Bosch Rexroth Indramat for the PSI Frequency Inverters series. Acting as a medium-frequency converter, it turns factory three-phase power into regulated output that feeds induction heaters, melting furnaces, or high-frequency drives within automated lines. The unit fits inside electrical cabinets and is designed for integration with water-cooled bus bars and remote control electronics.
The mains input is rated for 400–480 VAC, so the inverter can be connected directly to common industrial supply networks without a step-up transformer. Its nominal system current of 110 A supports continuous operation, while a maximum output current of 800 A is available for short bursts during startup or process peaks. The internal power electronics switch at a carrier frequency of 1 kHz, which determines the resolution of the synthesized medium-frequency waveform and influences transformer design on the load side. Control electronics are powered by a dedicated 24 V DC supply that keeps the gating, diagnostics, and bus communication active even when the mains is de-energized. Cabinet dissipation is limited to 110 W, reducing the heat load on enclosure climate systems.
The liquid circuit removes up to 420 W of semiconductor heat. A flow rate of 4 L/min through the water-cooled heat sink maintains device temperature as long as the inlet remains below 30 °C. Hydraulic connections use an M16 × 1.5 fitting, and the power terminals accept wire lugs for conductors up to 50 mm², while the control terminals accept conductors up to 35 mm². The enclosure carries an IP20 protection rating and requires a minimum clearance of 100 mm above and below to provide airflow around auxiliary parts. Overvoltage events are suppressed by a metal-oxide varistor network. The power section operates as a three-phase medium-frequency inverter, and communication with a PLC is handled through the INTERBUS interface.
