PSI62C0.333-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI62C0.333-W1 is part of the PSI Frequency Inverters series and features a degree of protection rated at IP20. It supports a mains nominal current of 220 Amps and uses MOV for overvoltage protection. The inverter has a typical cooling water flow of 4 liters per minute at a pressure drop of 0.6 bar, and a maximum installation altitude of 2000 meters.
Internal Product Review
The PSI62C0.333-W1 is a Bosch Rexroth Indramat frequency inverter with IP20 protection and MOV overvoltage protection. Water-cooled operation with 4 L/min minimum flow and a typical 0.6 bar pressure drop supports efficient thermal management in demanding installations. A 220 A nominal mains current makes the inverter a strong choice for high-load industrial drive systems.
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Product Description:
The PSI62C0.333-W1 is a liquid-cooled frequency inverter manufactured by Bosch Rexroth Indramat for the PSI Frequency Inverters series. It converts three-phase mains power into a modulated output that supports precise speed and torque control for induction or synchronous motors used in presses, extruders, and material-handling lines. By placing the power electronics in a cabinet and transferring excess heat to an external water circuit, the unit remains compact while handling the thermal load of continuous industrial automation.
The inverter has a nominal mains current of 220 A, and its power section can tolerate momentary peaks up to 1200 A, which provides headroom for motor inrush and dynamic braking cycles. Switching devices operate at a pulse-width modulation rate of 1 kHz, balancing acoustic noise with semiconductor stress. Internal electronics produce a cabinet basic loss of 69 W, while total heat removal under full load can rise to 700 W, so the cooling circuit must be sized accordingly. The water circuit requires a minimum flow of 4 L/min, and a typical pressure drop of 0.6 bar at that flow indicates moderate pumping demand. All live components are enclosed to IP20, so the inverter must be installed inside an additional enclosure where direct contact or airborne contamination is possible.
Control terminals provide a logic supply of 24 VDC and can sink or source up to 2 A for relays, status lamps, or interlocks. A metal-oxide varistor clamps transient surges on the DC link, helping protect the power semiconductors from overvoltage events. Operation is permitted up to a maximum installation altitude of 2000 m; above that height, derating is necessary because reduced air density affects cooling of adjacent components. This arrangement supports stable integration in enclosed drive cabinets that use external liquid cooling rather than internal forced-air heat removal.
