PSI6300.626L1 Bosch Rexroth Indramat
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MPN: R911309353
The Bosch Rexroth Indramat PSI6300.626L1 is a medium frequency inverter, part of the PSI Frequency Inverters series. It supports a maximum output current of 800 Amps and operates with a control supply of 24 VDC on 3 input phases. The inverter has an IP20 degree of protection and uses air cooling with a cooling loss of 360 W.
Internal Product Review
The PSI6300.626L1 is a medium frequency inverter with a DeviceNet fieldbus interface, well suited for integrated industrial control. Air cooling and IP20 protection support dependable cabinet operation in demanding installations. Strong current handling, highlighted by 800 A max output current and 36 kA max secondary current, makes the unit a highly capable inverter solution.
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Product Description:
The PSI6300.626L1 belongs to the PSI Frequency Inverters series produced by Bosch Rexroth Indramat. Classified as a medium-frequency inverter, it modulates three-phase energy to drive induction heating generators, welding transformers, or other loads that need tightly controlled medium-frequency power. Inside an automation cell, the unit supplies adjustable current and protects upstream switchgear while occupying minimal space in an IP20 control cabinet.
This inverter is powered by a control supply of 24 VDC and accepts a three-phase mains input. The IGBT bridge uses a 1 kHz clock frequency for its switching pattern, and MOV overvoltage protection clamps line transients before they reach sensitive components. All commands and diagnostics travel over a DeviceNet fieldbus, and the internal timer function also synchronizes to that bus. Air cooling is used, and basic cabinet loss is limited to 69 W under nominal conditions. The enclosure has an IP20 protection rating, so it must be installed inside a cabinet that maintains dust control. Power conductors terminate on lugs that accept wire up to 35 mm², while control terminals accommodate a maximum of 50 mm². Safe mounting requires 100 mm clearance above and below the heat sink. During dynamic operation, the power stage can deliver a maximum output current of 800 A, and those pulses flow through a three-phase input section rated for the same magnitude.
On the secondary side, the machine transformer can draw up to 36 kA for brief intervals, yet the inverter’s nominal system current is held at 110 A to match continuous-duty ratings. When operating at elevated power, total thermal dissipation may rise to 170 W inside the cabinet. An additional 360 W is rejected directly by the forced-air channels, which helps keep silicon junction temperatures within limits during sustained production cycles.
