12.F4.C3D-4Q21 KEB
Wake Industrial LLC is not an authorized distributor of this product.
The KEB 12.F4.C3D-4Q21 belongs to the F4 Combivert Frequency Inverters series and supports three input phases with a mains voltage range of 305 to 500 V AC. This inverter has a nominal input current of 10.5 Amps, a maximum rated motor power of 4 kW, and features an IP20 protection rating. It measures 240 mm in height, 90 mm in width, 160 mm in depth, and weighs 2 kilograms.
Internal Product Review
The 12.F4.C3D-4Q21 is a KEB F4 Combivert frequency inverter engineered for 3-phase input and a 305 to 500 V AC mains supply. With 9.5 A nominal output current and 4 kW rated motor power, the inverter delivers efficient and dependable drive performance for machine control applications.
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Product Description:
KEB manufactures the 12.F4.C3D-4Q21 as part of the F4 Combivert Frequency Inverters series. The unit is a cabinet-mounted frequency inverter that processes three-phase mains power and outputs a regulated AC waveform so motor speed can be matched to process requirements. In automated conveyors, pumps, or fans, it links the electrical supply to the mechanical load while allowing programmable acceleration and deceleration profiles. This arrangement helps the connected motor respond smoothly to changing process demands during normal operation and can reduce unnecessary energy use.
The inverter connects to a three-phase supply rated at 305 to 500 V AC. It tolerates network frequencies of 50/60 Hz with a ±2% margin, enabling use on standard industrial grids worldwide. Under nominal operating conditions, the unit draws 10.5 A, so feeder sizing and switchgear thermal loading can be planned appropriately. An upstream fuse of up to 20 A provides short-circuit protection for the line conductors. On the motor side, the drive supplies 9.5 A continuously and delivers 6.6 kVA through its IGBT output stage. That output supports motors with ratings up to 4 kW, and vector-based PWM helps maintain steady torque across the speed range.
The enclosure is classified IP20, so the unit is intended for installation inside a ventilated electrical cabinet. Continuous operation is permitted from -10 to 45 °C, while storage from -25 to 70 °C helps protect the electronics during transport or downtime. Its housing measures 90 mm wide, 240 mm high, and 160 mm deep, and the overall mass is 2 kg. The cabinet layout remains manageable because the front stays accessible for wiring and parameter entry. Power terminals accept up to 2.5 mm² copper conductors, which supports straightforward integration with standard control cabinet wiring.
