PSI63C0.781-W2 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI63C0.781-W2 is a medium frequency inverter from the PSI Frequency Inverters series. It operates with a mains voltage range of 480 to 690 VAC and a mains frequency of 50 or 60 Hz, and features water cooling. The inverter provides IP20 protection and has an integrated power supply unit delivering up to 2 A at 24 VDC. It weighs approximately 25 kilograms and supports operation between +10 to +55 degrees Celsius.
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Product Description:
The PSI63C0.781-W2 belongs to the PSI Frequency Inverters series produced by Bosch Rexroth Indramat. It is a medium-frequency inverter designed to modulate high-voltage, three-phase mains power for induction heating equipment and similar industrial loads. Its regulated output supports applications that require stable, programmable power during continuous production. The compact format allows the inverter to be installed in industrial control cabinets alongside related power and automation equipment.
The inverter uses a water-cooled heat exchanger to remove losses directly from the power modules. Its built-in auxiliary supply provides 24 VDC at up to 2 A, allowing sensors and control relays to operate without a separate source. Incoming utility power may range from 480 to 690 VAC, while the input section supports a frequency of 50 or 60 Hz. An Ethernet timer interface supports remote operating commands and diagnostic queries through the connected control system. These electrical connections enable the inverter to communicate with networked controllers while supplying auxiliary devices within its stated current limit.
The housing has an IP20 rating, providing protection against accidental finger contact when the unit is installed inside an indoor switch cabinet. Its climatic category is 3K3 according to EN 60721-3-3, making it suitable for production areas with noncondensing humidity and light dust. Power-stage dissipation does not exceed 420 W, which provides a clear basis for sizing the facility’s chilled-water system. Reliable operation is maintained at ambient temperatures from +10 to +55 °C. During storage or transportation, the inverter can withstand temperatures from -25 to +70 °C. The unit has an approximate shipping weight of 25 kg, so appropriate lifting and mounting equipment should be used when positioning it inside a cabinet.
