15.F4.C1G-3440 KEB
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The KEB 15.F4.C1G-3440 frequency inverter is part of the F4 Combivert Frequency Inverters series and has a housing weight of 10 kilograms. It features a 3-phase input, supports up to 11 kW of rated motor power, and is equipped with a braking transistor accessory. The inverter operates with a 400 V supply voltage class, has an IP20 protection rating, and a nominal input current of 26.5 A.
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Product Description:
The 15.F4.C1G-3440 is an AC frequency inverter manufactured by KEB for the F4 Combivert Frequency Inverters series. Installed between a three-phase mains supply and an induction motor, it converts fixed network voltage into a variable output so that motor speed and torque can be adapted to the real-time needs of automated machinery. This arrangement allows controlled motor operation without requiring a fixed output frequency from the supply.
Incoming power is three-phase, and the nominal input current is 26.5 A, which establishes the maximum continuous draw each line should withstand. The inverter delivers a steady output current of 24 A, translating to an apparent power capacity of 17 kVA and permitting motors up to 11 kW to be driven at rated speed. A factory-integrated braking transistor dissipates regenerative energy during rapid deceleration, while the carrier is switched at 8 kHz to balance acoustic noise with dynamic response. The line conductors use a 6 mm² cross-section, and installation is protected to IP20, meaning finger-safe openings but no liquid sealing. The housing follows type G mechanical dimensions, fits the 3K3 climatic category for control cabinet interiors, and conforms to electromagnetic compatibility standard EN 61800-3 for industrial environments.
Within the 400 V Class supply group, protective coordination calls for a mains fuse rated at 35 A so upstream conductors are isolated if abnormal current persists. The enclosure weighs 10 kg, adding minimal load to panel mounting rails while providing enough mass to absorb switching losses from the internal power stage. Its weight and fuse requirement should be considered when selecting mounting hardware and upstream protection in compact control cabinets.
