12.F4.C5D-4L10 KEB
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The KEB 12.F4.C5D-4L10 is part of the F4 Combivert Frequency Inverters series and features integrated brake resistor, brake transistor, and filter. This compact inverter has a rated output current of 9.5 Amps, supports 3-phase input and output, and handles a maximum motor power of 4 kW. It has a protection rating of IP20 and a peak current of 17.1 Amps.
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Product Description:
The 12.F4.C5D-4L10 is an AC frequency inverter produced by KEB as part of the F4 Combivert Frequency Inverters series. It is intended for industrial automation tasks that require variable motor speed, torque, and controlled stopping on three-phase machines. The unit belongs to housing size D and integrates a brake resistor, a brake transistor, a hardware-based current controller, and an EMC filter so external modules are minimized during cabinet installation.
During operation, the inverter draws a maximum line current of 10.5 A from a 3-phase input supply. Upstream protection is provided by a mains fuse rated at 20 A, aligning with the frame’s thermal limits. On the motor side, it can deliver up to 4 kW of mechanical power, while its apparent power capacity reaches 6.6 kVA. These limits indicate the compatible motor size and cable cross-section. The power stage synthesizes a balanced three-phase output for the connected motor. Hardware-based current control supervises each phase, and the compact control arrangement reduces latency in the regulation loop. An internal brake chopper diverts excess DC-bus energy into the integrated resistor for fast, controlled deceleration, and PTC monitoring disconnects the drive if motor temperature rises above the set threshold.
In continuous service, the rated output current is 9.5 A, yet the inverter can supply a peak of 17.1 A for short acceleration demands, providing reserve torque for heavy starts. The electronics sit inside an IP20 enclosure that allows airflow within a protected cabinet but prevents accidental contact with energized parts. Because the drive is built in a D housing size, its mounting dimensions and terminal layout are consistent across the F4 Combivert platform. This arrangement helps support orderly cabinet placement and straightforward cable routing.
