12.F5.C1B-350A KEB COMBIVERT F5-Compact Drive Inverter

Technical Description: KEB 12.F5.C1B-350A

The KEB 12.F5.C1B-350A is a robust industrial drive inverter part of the COMBIVERT F5-Compact family. Designed for mid-range power requirements, Frame Size 12 is a workhorse in heavy-duty manufacturing environments, including plastics extrusion, metal processing, and high-capacity conveyor systems. It offers an excellent balance between high-end control features and cost-effective power density.

High-Torque Performance and Versatility

This model is optimized for power ratings around 4.0kW to 5.5kW. The «350A» designation signifies a specific hardware and software configuration tailored for high-dynamic response. Like all F5 units, the 12.F5.C1B-350A supports various control modes, from basic V/Hz to advanced sensorless vector control, ensuring that the connected motor delivers peak performance even at low speeds.

Key Characteristics

  • Model: 12.F5.C1B-350A.
  • Series: F5-Compact.
  • Frame Size: 12.
  • Rated Power: 4.0kW / 5.5kW.
  • Input Phase: 3-Phase 400V.
  • Heat Dissipation: Air-cooled heatsink with integrated fan.
  • Interfaces: Supports modular plug-in cards for feedback and communication.
  • Safety: Prepared for STO (Safe Torque Off) integration.

Operational Reliability

The 12.F5.C1B-350A is built to last in demanding industrial climates. Its internal circuitry is protected against voltage transients and inductive noise. The use of high-grade capacitors and IGBT modules ensures a long service life even under high-cycle duty. Furthermore, the unit’s firmware includes intelligent thermal management that adjusts the switching frequency to prevent overheating while maintaining optimal torque delivery.

Category Specification
Protection Rating IP20 (Internal cabinet mount)
Efficiency > 97% at rated load
Programming KEB COMBIVIS 6 compatible

Maintenance Insights

To ensure maximum longevity of the 12.F5.C1B-350A, it is recommended to clean the cooling fan and heatsink fins every 12 months in dusty environments. The modular design allows for the control board to be replaced or upgraded without removing the power stage, significantly reducing maintenance labor costs.


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