PSI63C0.133-L1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI63C0.133-L1 is a medium frequency inverter from the PSI Frequency Inverters series, featuring air cooling and an IP20 degree of protection. It operates with a mains voltage of 400 to 480 VAC at 50 or 60 Hz and has a weight of approximately 20 kilograms. The integrated power supply unit delivers a maximum output current of 2 amps at 24 VDC.
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Product Description:
The PSI63C0.133-L1 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat as part of the PSI Frequency Inverters series. Installed between the three-phase mains and equipment that requires controlled medium-frequency power, it converts fixed utility power into regulated output that process controllers can vary in real time. This function makes it useful for induction heating coils, hardening generators, and high-speed spindle drives that require precisely controlled current waveforms. A fan-assisted, air-cooled frame and an integrated 24 V control supply reduce the need for additional auxiliary hardware in the cabinet.
The inverter supports operation under the 3K3 climatic category of EN 60721-3-3 for stationary use in weather-protected locations. Its rectifier accepts a three-phase input of 400–480 VAC at a grid frequency of 50/60 Hz, so step-down transformers are unnecessary for typical European or North American installations. A housing rated at IP20 protects the power electronics against accidental contact while allowing cooling air to pass through the enclosure. Forced airflow removes up to 360 W of switching losses, supporting full-load operation across the permitted temperature range. A stabilized bus generates 24 VDC for the logic circuits and the built-in timer used to sequence connected relays or sensors.
During continuous operation, the auxiliary rail can deliver up to 2 A for contactor coils, encoder power, or small valve solenoids connected within the same cabinet. The inverter maintains rated performance at ambient temperatures from +10 to +55 °C, keeping its electronic components, capacitors, and plastics within their permitted operating limits. During storage or transportation, it tolerates temperatures from -25 to +70 °C, allowing the unit to remain in an unconditioned warehouse within that range. The air-cooled enclosure weighs approximately 20 kg and has a rigid structure that helps it withstand vibration after secure panel mounting. Its integrated control supply can power compatible low-voltage loads without requiring a separate supply for every connected control device.
