16.F4.C1G-3440 KEB
Wake Industrial LLC is not an authorized distributor of this product.
The KEB 16.F4.C1G-3440 is a frequency inverter from the F4 Combivert Frequency Inverters series. It has a rated motor power of 15 kW and a rated supply voltage of 400 V with three input phases. The device supports a maximum switching frequency of 16 kHz, an output nominal current of 33 Amps, and an IP20 protection rating.
Internal Product Review
The 16.F4.C1G-3440 is a KEB F4 Combivert frequency inverter designed for 400 V supply systems and 15 kW motor applications. A 33 A nominal output current and 23 kVA nominal power give this unit strong drive capability for demanding machine operation. A maximum switching frequency of 16 kHz stands out as a valuable performance feature.
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Product Description:
The 16.F4.C1G-3440 is a frequency inverter built by KEB for the F4 Combivert Frequency Inverters series. As a closed-loop AC drive, it modulates the output voltage and frequency supplied to standard induction motors, allowing speed regulation, torque control, and soft starting in automated machinery and material-handling systems. By converting fixed industrial line power into a variable waveform, the unit helps match motor performance to process demand, reduce mechanical stress during acceleration, and improve energy efficiency in conveyors, pumps, and fans. This makes it suitable for applications that require repeatable motor response during changing loads and frequent start-stop cycles.
The inverter uses a three-phase input of 400 V. At this voltage, it draws a nominal line current of 36.5 A and accepts copper conductors up to 10 mm², helping keep conductor temperature within allowable limits. That input arrangement suits common industrial distribution systems and supports integration into enclosed control cabinets. Internally, the power stage converts that supply into a sinusoidal output rated for 23 kVA, which supports continuous motor operation up to 15 kW without derating. To reduce audible noise and switching losses, the IGBTs switch at a factory-set carrier frequency of 8 kHz. Related thermal dissipation is 310 W, so cabinet airflow must remove that heat during operation.
The control section also manages dynamic braking and protective functions. During rapid deceleration, the drive can channel up to 30 A into an external resistor bank, and the minimum resistor value is 25 Ω. This braking path helps dissipate regenerated energy when decelerating loads would otherwise raise DC-bus voltage. For applications that need greater switching headroom, the hardware supports a ceiling of 16 kHz, although additional cooling is required before that mode is enabled. The plastic type G housing has an IP20 rating, so the unit is intended for installation inside a filtered electrical enclosure. The 33 A output current is protected by a 50 A mains fuse.
