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Siemens SINAMICS G120C Inverter, 18.5kW, 3AC 380-480V

Siemens SINAMICS G120C Inverter, 18.5kW, 3AC 380-480V

USD 1,141.18

Compact 3-phase 380-480V inverter with 18.5 kW low overload rating, integrated Class A filter, Safe Torque Off, and USS/Modbus RTU fieldbus.

SKU Siemens-6SL3210-1KE23-8AB1 Category
Top Brands > Siemens > Siemens Compact Converters

Siemens SINAMICS G120C Inverter, 18.5kW, 3AC 380-480V

Model Identifier SINAMICS G120C
Official Part Number 6SL3210-1KE23-8AB1
GTIN Standard 4042948663165

Technical Overview

Compact 3-phase 380-480V inverter with 18.5 kW low overload rating, integrated Class A filter, Safe Torque Off, and USS/Modbus RTU fieldbus.

Key Features

  • Compact Design: Maximizes panel space efficiency without compromising on performance.
  • Integrated Safety: Features Safe Torque Off (STO) for enhanced operational security and simplified compliance.
  • High Power Density: Delivers up to 18.5 kW (Low Overload) or 15.0 kW (High Overload) output power at 380-480V in a small footprint.
  • Flexible Communication: Supports USS/Modbus RTU for versatile integration into control systems.
  • Energy Efficiency: Optimized for low harmonic distortion and high efficiency, reducing energy consumption.
  • Robust Construction: IP20 protection rating ensures reliability in demanding industrial settings.
  • Wide Operating Temperature: Functions reliably from –10 °C to +40 °C without derating.
  • Integrated Class A EMC filter for reduced electromagnetic interference.
  • Comprehensive I/O Interface: Includes 6 Digital Inputs, 2 Digital Outputs, 1 Analog Input, 1 Analog Output, and 1 Motor Temperature sensor input.

Integrated Safe Torque Off (STO) functionality ensures enhanced operational security and simplified compliance with industrial safety standards.

Technical Specification Matrix

ParameterValue
SeriesSINAMICS G120C
Rated Output Power (Low Overload)18.5 kW (25.00 hp)
Rated Output Power (High Overload)15.0 kW (20.00 hp)
Supply Voltage3AC 380–480 V (+10% / -20%)
Line Frequency47–63 Hz
Rated Current (Low Overload)37.00 A
Rated Current (High Overload)31.00 A
Max. Output Current62.00 A
Pulse Frequency4 kHz
Output Frequency (Vector Control)0–240 Hz
Output Frequency (V/f Control)0–550 Hz
CoolingInternal Air Cooling
Protection RatingIP20 / UL OPEN TYPE
Safety FunctionsSTO (Safe Torque Off)
Operating Temperature–10 °C to +40 °C (without derating)
Integrated FilterClass A
Communication InterfacesUSS/MODBUS RTU
Digital Inputs (Standard)6
Digital Inputs (Fail-Safe)1
Digital Outputs (Relay Changeover Contact)1 (DC 30 V, 0.5 A)
Digital Outputs (Transistor)1 (DC 30 V, 0.5 A)
Analog Inputs (Differential)1 (10 bit resolution)
Analog Outputs (Non-isolated)1
Motor Temperature Sensor Input1 (PTC, KTY)
Power Factor λ0.70 ... 0.85
Offset Factor cos φ0.95
Efficiency η0.97
Sound Pressure Level (1m)66 dB
Power Loss448.0 W
Physical Weight (kg)5.5
Dimensions L x W x H (cm)27 x 36.5 x 16

Industrial Applications

1. Conveyor Belt Automation in Material Handling

This inverter is ideal for driving medium-sized conveyor motors (15-18.5 kW, 380-480V) in material handling systems. Its compact design facilitates installation in control cabinets near conveyor lines, optimizing space. The integrated Safe Torque Off (STO) function is critical for ensuring personnel safety during maintenance or emergency stops, a common requirement in such dynamic environments. Integration with existing PLC systems for precise speed and direction control is seamless via USS/Modbus RTU.

Problem Solved

Provides precise speed control, ensures safe operation during interventions, and maintains efficient material flow for medium-sized conveyor systems.

Variable Speed DriveSafe Torque Off (STO)Material HandlingConveyor SystemsModbus RTU18.5 kW

2. Pump and Fan Control in Industrial HVAC/Water Treatment

The Siemens 6SL3210-1KE23-8AB1 is perfectly suited for controlling centrifugal pumps and industrial fans in HVAC systems or water/wastewater treatment plants. The 15-18.5 kW power rating accommodates typical motor sizes in these applications. Its V/f control (up to 550 Hz) and vector control (up to 240 Hz) capabilities enable demand-oriented operation, leading to significant energy savings. While IP20-rated, its installation within a protective cabinet is standard practice, ensuring reliable operation in these environments.

Problem Solved

Enables energy optimization and precise flow/pressure regulation in pump and fan applications, contributing to reduced operational costs and improved system performance.

Variable Frequency Drive (VFD)HVACPumpsFansEnergy EfficiencyFlow Control380-480V

3. General Machine Building for Processing Equipment

For Original Equipment Manufacturers (OEMs) developing various processing machines such as mixers, extruders, or small machine tools, this compact inverter offers significant advantages. Its small dimensions (29.5 x 14.0 x 20.3 cm) are crucial for maximizing panel space efficiency. The 15-18.5 kW power rating provides versatility for a wide range of machine functions. The integrated Safe Torque Off (STO) simplifies compliance with machine safety directives, and its comprehensive I/O (digital, analog, motor temperature sensor) allows for direct connectivity to machine sensors and actuators, thereby reducing the need for additional external components.

Problem Solved

Offers a space-efficient, safe, and versatile motor control solution for seamless integration into diverse compact industrial processing and manufacturing machinery.

OEM ApplicationsMachine ControlCompact InverterSafe Torque Off (STO)Process AutomationDigital I/OAnalog I/O
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