14.F4.F1E-3440 KEB
Wake Industrial LLC is not an authorized distributor of this product.
The KEB 14.F4.F1E-3440 is part of the F4 Combivert Frequency Inverters series and features a three-phase mains connection with a voltage range of 305 to 500 V and an E-size housing. It supports field oriented control, has an integrated braking transistor, and provides a maximum rated motor power of 7.5 kW with a nominal output current of 16.5 A. This inverter has an IP20 protection rating and operates at a rated frequency of 8 kHz.
Internal Product Review
The 14.F4.F1E-3440 is a KEB COMBIVERT F4 frequency inverter built for 3-phase 400 V-class applications. Field orientated control and 7.5 kW rated motor power give this unit strong drive precision and practical capacity for demanding machine duties. An integrated braking transistor adds useful deceleration capability, making this inverter a well-rounded choice for dependable industrial motion control.
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Product Description:
The 14.F4.F1E-3440 frequency inverter is produced by KEB as part of the F4 Combivert Frequency Inverters series. Designed for cabinet installation, the COMBIVERT F4 platform modulates three-phase supply power to deliver variable speed and torque to induction motors in conveyors, machining centers, and process pumps. By integrating control electronics, a braking transistor, and field-oriented algorithms, the unit enables closed-loop regulation without external motor starters.
This E-size drive accepts a three-phase supply within the 305–500 V range for the 400 V class and supports mains conductors up to 4 mm². A nominal input draw of 18.1 A supports a nominal output current of 16.5 A, providing 11 kVA of continuous apparent power and up to 7.5 kW of rated mechanical motor power. Operation is governed by field-oriented control, so the inverter can regulate flux and torque independently while switching at a carrier frequency of 8 kHz. Standard fieldbus capability simplifies integration with existing controls. The internal braking transistor directs regenerated energy to an appropriate external braking resistor. All electronics are housed in an IP20-rated enclosure that supports panel-mount ventilation practices for the COMBIVERT F4 family.
Protective limits prevent thermal or electrical overloads. Short bursts may reach 29.7 A, while an overcurrent trip activates at 36.3 A; upstream protection is provided by a 25 A mains fuse. Dynamic deceleration supports a maximum braking current of 15 A, provided that the external resistor remains above the minimum resistance of 50 Ω or uses the typical resistance of 85 Ω. The heat sink may reach 73 °C, and power loss at nominal load is 240 W, so adequate airflow is required. The permitted ambient temperature ranges from -10 to 45 °C, with noncondensing humidity up to 95%.
