PSI6300.336-L1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI6300.336-L1 is a medium frequency inverter from the PSI Frequency Inverters series. It operates with a mains voltage of 400 to 480 VAC and a nominal system current of 110 Amps. This air-cooled inverter features IP20 degree of protection, a control supply of 24 V DC, and integrated temperature monitoring.
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Product Description:
The PSI6300.336-L1 is a medium-frequency inverter produced by Bosch Rexroth Indramat for the PSI Frequency Inverters series. Its job in industrial automation is to convert fixed-frequency three-phase input power into adjustable medium-frequency output for demanding process equipment. The unit is intended for control-cabinet installation and uses heavy-gauge screw terminals so high-current connections can be secured directly. This layout suits applications such as induction heating systems and other loads that require stable power delivery under changing operating conditions.
This inverter accepts a line voltage of 400 – 480 VAC and uses a switching clock of 1 kHz to generate the output waveform. Its logic circuits are supplied by an auxiliary 24 V DC source, allowing control functions to remain active even when the power stage is shut down. The housing has a protection rating of IP 20, so the surrounding cabinet must provide the required touch protection and enclosure sealing. Under dynamic load, the power stage can supply up to 800 A, while steady operation is rated at a nominal 110 A. Built-in airflow cooling removes heat during continuous operation at ambient temperatures up to 55 °C. MOV components provide overvoltage protection, integrated temperature monitoring initiates an orderly shutdown when limits are approached, and the power terminals accept conductors from 35 mm² up to 50 mm². Control integration is handled through the INTERBUS timer interface.
Thermal loss figures are important for cabinet ventilation design. Standby basic cabinet loss is 69 W, and during rated operation this rises to a maximum of 170 W. Additional heat-sink dissipation can reach 360 W, so the cooling path inside the enclosure must be sized to carry that heat away from nearby components. When the inverter is used with a PSG 3100 transformer, the secondary circuit can tolerate fault currents up to 36 kA without exceeding the intended stress limit. These electrical and thermal values support correct protection coordination and airflow planning inside the cabinet.
