PSI63C0.738-W2 Bosch Rexroth Indramat
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MPN: R911174424
The Bosch Rexroth Indramat PSI63C0.738-W2 is a medium frequency inverter from the PSI Frequency Inverters series and is water cooled with a cooling water flow of 4 liters per minute. It handles a mains voltage range of 480 to 690 VAC, supports 3-phase input, and has a maximum output current of 800 Amps. The inverter provides an integrated power supply unit with 24 VDC output at up to 2 Amps and weighs approximately 25 kilograms.
Internal Product Review
The PSI63C0.738-W2 is a well-engineered medium frequency inverter featuring water-cooled operation for stable thermal control. Support for 480 to 690 VAC mains input and IP20 protection suits controlled cabinet installations and streamlined system integration. Integrated temperature monitoring and an 800 A maximum output current make this unit a strong choice for demanding industrial power applications.
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Product Description:
The PSI63C0.738-W2 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat for the PSI Frequency Inverters series. It converts three-phase mains power into regulated medium-frequency power so that induction heaters, melting furnaces, or welding transformers can be driven directly from an automation controller without additional step-down stages. Integrated protection, sequencing, and power supply functions allow the unit to be mounted in control cabinets where accurate energy dosing and rapid current rise times are required. Its power conversion design supports industrial processes that depend on controlled current delivery over short operating cycles.
The inverter accepts three-phase input at 480–690 VAC and operates on utility networks with a frequency of either 50 or 60 Hz. Internal gate signals are timed at a control clock frequency of 1 kHz, supporting precise regulation of the output current. A nominal system current of 110 A supports steady-state operation, while the unit can deliver up to 800 A during short process peaks. The matched PSG 3100 circuit can sustain a secondary surge of 36 kA. Overvoltage protection is provided by a metal-oxide varistor network, and temperature monitoring is built into the unit. The integrated 24 VDC supply provides 2 A for external relays, while the power terminals accommodate conductors with cross-sectional areas up to 50 mm². An Ethernet timer coordinates gating sequences, and a dedicated water circuit cools the three-phase power stage.
Water must flow at 4 liters per minute through an M16 × 1.5 threaded connection, and the inlet temperature must not exceed 30 °C. Semiconductor and bus dissipation reaches 420 W, while the switchgear compartment dissipates an additional 100 W. The housing has an IP20 protection rating, and the assembly weighs 25 kg. Installation requires 100 mm of clearance to provide adequate access and airflow around the enclosure. Operation is permitted at altitudes up to 2,000 meters and at ambient temperatures ranging from +10 °C to +55 °C. Storage is allowed at temperatures from -25 °C to +70 °C. The unit has a climatic classification of 3K3 in accordance with EN 60721-3-3 for installation in compatible control-room conditions.
