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  • Frequency inverter | 7.5kW | 380-480V | 3F | IP20 | PROFIBUS DP | 6SL3210-1KE21-7AP1 Siemens

    Code: 6SL3210-1KE21-7AP1

    Siemens SINAMICS G120C – a compact and reliable frequency converter designed for controlling various types of electric motors in industrial, commercial, and technical installations. It ensures high energy efficiency (up to 97%), convenient operation, extensive communication options (PROFIBUS DP), and integrated protection. 

  • Technical Specifications

    Input: 3 AC, 380–480 V (+10% / -20%), 47–63 Hz
    Output: 3 AC, 400 V
    Rated power: 7.5 kW (LO), 5.5 kW (HO)
    Rated current: 17 A (IN), 16.5 A (LO), 12.5 A (HO)
    Maximum output current: 25 A
    Output frequency: 0–240 Hz (vector control), 0–550 Hz (V/f control)
    Control types: V/f (linear, quadratic, ECO), FCC, sensorless vector control
    Efficiency: up to 97%
    Protection class: IP20 (UL open type)
    Dimensions: 100 × 196 × 203 mm
    Weight: 2.3 kg
    Noise level: 63 dB
    Max. motor cable length: 50 m (shielded), 100 m (unshielded)
    Environmental conditions: -10…+40 °C operation, up to 95% humidity (non-condensing)
    Interfaces: PROFIBUS DP, 6 digital inputs, 2 digital outputs, 1 analog input, 1 analog output
    Standards: UL, cUL, CE, C-Tick (RCM)

    Functions

    Frequency control with V/f curve, ECO mode, or sensorless vector control.

    Integrated fan with air cooling ensures reliable operation.

    PROFIBUS DP communication enables integration into various automation systems.

    PTC/KTY sensor interface for motor temperature monitoring and protection.

    Compact size – easy to install even in limited space.

    Automatic voltage protection and integrated braking resistor connection.

    Applications

    For home users: suitable for pumps, fans, compressors, or other equipment to save energy and extend service life.

    For engineers: provides flexible control options, precise speed regulation, communication with other systems, and reliable process automation.

    For electricians: easy installation, simple wiring with plug-in terminals, clear documentation, and compatibility with various devices.

    In industry: used in conveyor lines, pump stations, manufacturing equipment.

    In commerce: applied in air supply systems, ventilation, elevators, refrigeration units.

    Pros

    High efficiency – up to 97% energy utilization.

    Compact design – requires little space.

    Reliable cooling – ensures long-term operation.

    Wide functionality – multiple control modes.

    Easy integration – PROFIBUS DP communication.

    Certified by international standards (UL, CE, cUL, RCM).

    Cons

    IP20 protection class – not suitable for harsh environments without an additional enclosure.

    No integrated touch panel – requires a separate control module.

    No encoder support. 

    Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.
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