18.F4.C0H-4L11 KEB
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The KEB 18.F4.C0H-4L11 belongs to the F4 Combivert Frequency Inverters series and is a compact control type inverter with a housing type H and enclosure rating of IP20. It has a maximum motor power of 22 kW, an output nominal power of 35 kVA, and weighs 14 kilograms. The inverter's output nominal current is 50 A and it supports a line cross section of 25 mm².
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Product Description:
The 18.F4.C0H-4L11 is a frequency inverter manufactured by KEB for the F4 Combivert Frequency Inverters series. Its control type is compact, and the housing follows the H layout used for this product line, so the unit occupies minimal panel depth. Designed for industrial automation, the inverter converts a constant three-phase supply into a variable output voltage and frequency, allowing precise speed and torque control of connected AC motors without external mechanical throttling. This operating principle suits conveyors, pumps, fans, and other variable-speed machinery. No accessory modules are assigned to this model, simplifying ordering and wiring.
This inverter carries an IP20 enclosure rating, so it is intended for mounting inside a switchgear cabinet where finger-safe protection is sufficient. The line terminals accept conductors up to 25 mm² and must be protected by an 80 A mains fuse. Under continuous loading, the unit draws 55 A from the supply and delivers an output current of 50 A, which corresponds to 35 kVA of apparent power at rated voltage. For typical machine drives, the inverter matches motors up to 22 kW, and short acceleration intervals can be supported because the current may rise to 75 A for brief periods without exceeding the design limit. The power lugs require a tightening torque of 2.5 Nm to maintain the intended thermal contact.
Overcurrent protection is managed by an overcurrent trip that activates at 90 A, preventing semiconductor damage during faults. When shielded motor leads are required, the integrated filter supports cable runs up to 100 m without breaching conducted emission limits. The assembled unit weighs 14 kg, which supports stable panel mounting while remaining suitable for cabinet installation. This cable length allows greater separation between the inverter and motor in larger machine layouts while helping keep conducted emissions under control.
