12.F4.C1D-4A01 KEB
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The 12.F4.C1D-4A01 is a frequency inverter from KEB, part of the F4 Combivert Frequency Inverters series. It features a rated motor power of 4 kW, nominal input current of 10.5 A, and a protection rating of IP20. The unit includes a braking transistor, supports a maximum braking current of 10 A, and weighs 1.20 kg.
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Product Description:
The 12.F4.C1D-4A01 is an AC drive produced by KEB within the F4 Combivert Frequency Inverters series. As a frequency inverter, it converts three-phase mains power into a variable voltage and frequency supply so that asynchronous or synchronous motors can be started, accelerated, and regulated without mechanical contactors. The unit targets conveyor lines, pumps, and other motion tasks that require adjustable speed and torque while keeping footprint and cabinet wiring simple. This makes it suitable for installations where smooth speed changes and controlled stopping are more important than simple across-the-line motor starting.
Electrical ratings determine how the inverter couples to both the supply and the motor. Its rated apparent power is 6.6 kVA, which represents the maximum volt-ampere demand placed on the mains under continuous load, while the matched motor size is limited to 4 kW. The output stage can supply a steady phase current of 9.5 A, and the rectifier draws a nominal line current of 10.5 A. An integrated braking transistor allows connection of external resistors so kinetic energy can be dissipated; the minimum resistor value is 82 Ω and the circuit can accept up to 10 A of regenerative current. For cabinet installation, the drive carries an IP20 protection rating, so live parts must be protected by the enclosure. Power terminals accept conductors up to 2.5 mm², matching typical control-panel wiring practices. The braking circuit supports applications with frequent deceleration, where returned energy must be managed without upsetting the DC bus.
Short-term overload capability helps the inverter handle acceleration demands. It can deliver 17.1 A for a limited duration, and an overcurrent shutdown is triggered if the output reaches 20.9 A. Protection on the mains side is achieved by fusing at 20 A, matching the stated input limits. The compact housing is 90 mm wide, 250 mm long, and 160 mm high, which simplifies stacking in shallow cabinets. Despite the thermal capacity needed for power electronics, the assembly weighs 1.20 kg, easing DIN rail mounting. The low mass also reduces the mechanical load on the mounting structure in compact control cabinets.
