Siemens SINAMICS G120C 3kW Compact Inverter

USD 388.22

Compact 3.0kW (LO) / 2.2kW (HO) inverter with 3AC 380-480V input, IP20, integrated Class A filter, STO, and USS/MODBUS RTU for precise motor control.

SKU Siemens-6SL3210-1KE17-5AB1 Category
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Siemens SINAMICS G120C 3kW Compact Inverter

Model Identifier SINAMICS G120C
Official Part Number 6SL3210-1KE17-5AB1
GTIN Standard 4042948663103

Technical Overview

Compact 3.0kW (LO) / 2.2kW (HO) inverter with 3AC 380-480V input, IP20, integrated Class A filter, STO, and USS/MODBUS RTU for precise motor control.

Key Features

  • Compact, space-saving design (Size FSA)
  • Integrated braking chopper
  • Built-in USS/MODBUS RTU communication
  • Integrated safety function: Safe Torque Off (STO)
  • Integrated filter Class A for reduced electromagnetic interference
  • External 24V I/O interface: 6 Digital Inputs, 2 Digital Outputs, 1 Analog Input, 1 Analog Output, 1 Motor Temperature Input (PTC/KTY)
  • Sensorless vector control and V/f control for flexible motor operation
  • Quick setup and diagnostics via BOP-2 or STARTER/TIA Portal compatible

Delivers 3.0 kW (low overload) or 2.2 kW (high overload) output power for efficient motor control.

Technical Specification Matrix

ParameterValue
Input Voltage3 AC 380-480 V +10% / -20%
Line Frequency47-63 Hz
Rated Current (Low Overload)9.50 A (Input), 7.30 A (Output)
Rated Current (High Overload)8.20 A (Input), 5.60 A (Output)
Output Voltage400V IEC, 480V NEC (Rated)
Rated Power (Low Overload)3.00 kW (4.00 hp)
Rated Power (High Overload)2.20 kW (3.00 hp)
Max. Output Current11.20 A
Pulse Frequency4 kHz
Output Frequency (Vector Control)0-240 Hz
Output Frequency (V/f Control)0-550 Hz
Protection ClassIP20
Power Factor λ0.70-0.85
Efficiency η0.97
Sound Pressure Level (1m)52 dB
Power Loss101.0 W
Communication InterfaceUSS/MODBUS RTU
Standard Digital Inputs6
Fail-safe Digital Inputs1
Digital Outputs (Relay)1 (DC 30 V, 0.5 A)
Digital Outputs (Transistor)1 (DC 30 V, 0.5 A)
Analog/Digital Inputs1 (Differential input, 10 bit resolution)
Analog Outputs1 (Non-isolated)
PTC/KTY Interface1 motor temperature sensor input
Ambient Temperature-10 °C to +50 °C (without derating)
Physical Weight (kg)2.3
Dimensions L x W x H (cm)22.5 x 27 x 8.5

Industrial Applications

1. Conveyor Belt Systems for Manufacturing

This inverter is suitable for precisely controlling the speed of conveyor belts in manufacturing lines. The 3.0 kW power output is ideal for medium-duty conveyor applications, ensuring smooth acceleration and deceleration of goods.

Problem Solved

Prevents sudden stops/starts that can damage products or machinery, optimizes material flow, and allows for precise speed adjustments for different production stages, integrating easily with existing control systems via MODBUS RTU. The STO function provides critical safety for maintenance personnel.

Variable Speed DriveMaterial HandlingProcess OptimizationSafety Integration (STO)MODBUS RTU

2. Pump Control in HVAC or Water Treatment

The SINAMICS G120C can efficiently manage the speed of pumps in HVAC systems or smaller water treatment facilities. Its 3.0 kW power rating is well-suited for controlling centrifugal pumps to maintain desired flow rates or pressure levels.

Problem Solved

Reduces energy consumption by running pumps only at the required speed, extends pump lifespan by minimizing mechanical stress, and allows for accurate process control. The IP20 rating means it would be suitable for installation within a control cabinet.

Energy EfficiencyFlow ControlPressure RegulationMotor ProtectionPID Control

3. Fan and Blower Applications in Industrial Ventilation

This compact inverter is perfect for controlling industrial fans and blowers, allowing for variable airflow in ventilation systems for workshops, warehouses, or processing plants. The 3.0 kW output provides sufficient power for many common industrial fan sizes.

Problem Solved

Optimizes air circulation and temperature regulation, reduces noise levels, and saves significant energy compared to fixed-speed operation. The integrated filter minimizes electrical noise in sensitive environments.

Airflow ControlVentilation SystemsEnergy SavingsNoise ReductionEMC Filtering
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