PSI63C0.782-L1 Bosch Rexroth Indramat
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MPN: R911174381
The Bosch Rexroth Indramat PSI63C0.782-L1 is a medium frequency inverter from the PSI Frequency Inverters series. It features a maximum output current of 800 Amps and supports a mains voltage range of 400 to 480 VAC. The unit has an IP20 degree of protection, an integrated temperature monitoring system, and uses air cooling with recessed mounting.
Internal Product Review
The PSI63C0.782-L1 is a medium frequency inverter with air-cooled operation. Integrated temperature monitoring and MOV overvoltage protection support stable performance in demanding inverter applications. Maximum output current of 800 A makes the unit an excellent choice for high-output systems.
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Product Description:
The PSI63C0.782-L1 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat as part of the PSI Frequency Inverters series. Designed for industrial automation, it converts line power into a regulated high-current output used for induction heating, brazing, or resonant power supplies where precise energy dosing is necessary. Its recessed cabinet form simplifies installation in system switchgear, and the internal air path supports continuous duty within production cells. Because the unit serves as the power stage between the mains and the work coil, reliable switching and protection are critical to stable operation.
The inverter accepts a three-phase input of 400–480 VAC, allowing use on factory distribution networks without an autotransformer. Logic and fan circuits draw only 24 V DC, separating the control electronics from the power channel for safety and noise immunity. A carrier frequency of 1 kHz sets the pulse-width modulation rate, balancing efficiency and harmonic content. During heating cycles, the power stage can deliver up to 800 A of primary current, giving enough headroom for demanding duty cycles. With a protection rating of IP20, the assembly must be housed inside a panel but remains guarded against accidental contact with live parts. Air cooling, MOV-based overvoltage suppression, and Ethernet-addressable timing functions manage thermal load, surge events, and sequence control. Recessed mounting keeps the heat sink flush with enclosure walls, and the terminals accept 35 mm² conductors for low-impedance connections.
At steady state, the inverter circulates 110 A through its output bridge, while short bursts reaching 36 kA are possible on the secondary side of a matched transformer for rapid magnetization. The ambient temperature must not exceed 55 °C, and the heat sink threshold is 45 °C. Integrated sensors monitor these conditions, and cabinet dissipation figures of 69 W at idle and 170 W at full power set the airflow required through the enclosure.
