16.F4.C1G-M440 KEB
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The KEB 16.F4.C1G-M440 is a frequency inverter from the F4 Combivert Frequency Inverters series with a maximum rated motor power of 15 kW and a voltage class of 400 V. It features an integrated braking transistor and protection rating of IP20, and has a housing that measures 330 mm in height, 170 mm in width, and 255 mm in depth. The inverter has a nominal input current of 36.5 A and a weight of 10 kg.
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Product Description:
The 16.F4.C1G-M440 is a variable-speed AC drive produced by KEB within the F4 Combivert Frequency Inverters series. It regulates the speed and torque of three-phase induction motors in automated machinery, letting a single unit replace mechanical gear or damper arrangements. This type of control helps motors match process demand more closely, which supports smoother starts, more stable speed changes, and reduced reliance on mechanical throttling. KEB includes an integrated braking transistor, so regenerative energy is dissipated internally and panel wiring is simplified in conveyor lines, pumps, and packaging systems that cycle between acceleration and deceleration.
This inverter connects to 400 V mains, matching common plant supplies. The input side draws a nominal current of 36.5 A, and the power stage converts that to an output current of 33 A for the motor. That current capacity supports steady motor operation under continuous industrial loads instead of brief intermittent duty alone. At that operating point, the drive can deliver 23 kVA to the terminals, covering machines that need continuous torque rather than short peaks. KEB rates the unit for a motor up to 15 kW, so it fits mid-range extruders, centrifugal fans, or process mixers. Internally, the IGBT carrier operates at a rated 8 kHz, and it can be set as high as 16 kHz for quieter operation, although higher carrier frequencies increase switching losses while improving current waveform quality.
The inverter’s maximum switching limit of 16 kHz is supported by a fan-cooled aluminum chassis, which is sealed to IP20 for finger-safe indoor cabinet installation. This construction suits protected control enclosures rather than exposed field mounting. During full-load operation, the control electronics and IGBTs dissipate 310 W, so the enclosure must remove this heat to maintain reliable operation. Mechanical dimensions of 170 mm wide, 255 mm deep, and 330 mm high leave room for the required 50 A mains fuse and a 10 mm² line cross section without crowding adjacent components. The unit weighs 10 kg, so it can be mounted on DIN rails or a backplate without lifting equipment.
