Siemens SINAMICS G120C Variable speed drive, IP20, 3AC, 380-480V Part number 6SL3210-1KE21-7AF1

Product Overview

The Siemens 6SL3210-1KE21-7AF1 is a SINAMICS G120C compact frequency inverter designed for variable-speed control of three-phase motors. Rated for 7.5 kW (low overload) at 400 V AC, it supports a 380–480 V three-phase supply and includes an integrated EMC filter and built-in industrial communication. Its compact footprint makes it ideal for cabinet installation in modern automation systems.

Key Features

• Compact SINAMICS G120C frequency inverter
• Rated motor power: approx. 7.5 kW (low overload) / 5.5 kW (high overload)
• Supply voltage: 3AC 380–480 V, 47–63 Hz
• Rated current (LO): 21.5 A
• Rated current (HO): 18.2 A
• Integrated EMC filter (Class A)
• Built-in communication interface (PROFINET / EtherNet-IP)
• Compact panel-mounted design (IP20)

Technical Specifications

• Article Number: 6SL3210-1KE21-7AF1
• Series: SINAMICS G120C
• Low Overload Power: approx. 7.5 kW
• High Overload Power: approx. 5.5 kW
• Rated Current (LO): 21.5 A
• Rated Current (HO): 18.2 A
• Supply Voltage: 3AC 380–480 V (+10% / –20%)
• Frequency Range: 47–63 Hz
• Motor Output Frequency: up to approx. 550 Hz
• Communication: Integrated PROFINET / EtherNet-IP
• Protection Rating: IP20
• Installation: Control cabinet, panel mounting

Compliance & Certifications

• Manufactured under Siemens SINAMICS industrial drive standards
• Compliant with IEC/EN requirements for variable-frequency drives

Applications

Suitable for variable-speed motor control in conveyors, pumps, fans, compressors, packaging machinery, automation cells and HVAC systems. Ideal for control cabinets requiring compact, efficient drive solutions with integrated industrial communication.