10.F4.F3D-3440 KEB
Wake Industrial LLC is not an authorized distributor of this product.
The KEB 10.F4.F3D-3440 is a frequency inverter from the F4 Combivert Frequency Inverters series, featuring a 3-phase input and designed for 400 V-Class supply voltage. It supports a maximum rated motor power of 2.2 kW and an output nominal current of 5.8 A. The inverter has a rated operating frequency of 8 kHz and a maximum heat sink temperature of 79 degrees Celsius.
Internal Product Review
The 10.F4.F3D-3440 is a KEB F4 Combivert frequency inverter built for 3-phase, 400 V-class drive applications. Rated for 2.2 kW motor power with 5.8 A nominal output current, the inverter delivers precise and dependable control for compact industrial equipment. An 8 kHz rated operating frequency and 100 m shielded motor line length make this model a strong choice for stable, well-integrated drive performance.
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Product Description:
The 10.F4.F3D-3440 inverter is manufactured by KEB and belongs to the F4 Combivert Frequency Inverters series. It serves as a closed-loop AC drive that modulates voltage and frequency to match real-time motor load requirements, enabling precise speed regulation in automated production cells, material-handling lines, and HVAC installations. By synthesizing adjustable output waveforms from a constant supply, the unit supports energy-saving operation and soft motor starts that reduce mechanical stress on driven equipment. Closed-loop feedback also helps the drive maintain stable motor behavior when load demand changes during operation.
This drive accepts a three-phase input in the 400 V class supply range and draws a nominal 6.4 A while being protected upstream by a 10 A mains fuse. At the output side, it can deliver a continuous 2.2 kW of mechanical shaft power with a motor current of 5.8 A. The inverter has an apparent output rating of 4 kVA, giving headroom for power-factor variations under dynamic loads. Carrier pulses can be increased up to 16 kHz to minimize audible noise and current ripple, while the shielded motor cable may extend to 100 m without exceeding recommended EMC limits. A minimum braking resistor of 160 Ω can be connected to dissipate regenerated energy during rapid deceleration and support controlled stopping of high-inertia loads.
The gating pattern defaults to a rated switching frequency of 8 kHz, balancing semiconductor losses against harmonic quality. Under nominal load, the heat sink dissipates 130 W, and safe operation is maintained as long as its temperature stays below 79 °C. For short acceleration bursts, the power stage supplies 10.4 A, with an overcurrent trip set at 12.7 A to protect the IGBTs. Control terminals accept motor leads with a 1.5 mm² cross section, and the internal logic monitors line symmetry to avoid DC-link overvoltage during uneven supply conditions. The thermal and current limits help keep the power section within its intended operating range during repetitive starts and speed changes.
