Siemens Micromaster 440 without filter, 380 - 480V, 5.5kW Part number 6SE6440-2UD25-5CA1

Product Overview

The Siemens Micromaster 440 frequency inverter (6SE6440-2UD25-5CA1) is a three-phase AC drive designed for precise motor control in industrial applications. It operates on a 380–480 V AC supply and provides adjustable output for constant and square-law torque loads. The unit delivers flexible and reliable performance with built-in control features and a robust design suited for a broad range of motor control tasks.

Key Features

• Three-phase MICROMASTER 440 frequency inverter
• 380–480 V AC supply range
• Constant torque and square-law torque control
• 150 % overload capability for extended operation
• Pulse frequency up to 4 kHz for smooth motor response
• Integrated digital and analog I/O for flexible control
• Suitable for wall or cabinet mounting in industrial environments

Technical Specifications

• Article Number: 6SE6440-2UD25-5CA1
• Product Family: MICROMASTER 440
• Device Type: AC frequency inverter
• Input Voltage: 380–480 V AC
• Input Frequency: 47–63 Hz
• Rated Output Power: 5.5 kW at high overload, 7.5 kW at low overload
• Output Current: ~13.2 A at high overload, ~19 A maximum capacity
• Output Frequency: 0–650 Hz
• Pulse Frequency: Up to 4 kHz
• Power Factor: ~0.95
• Efficiency: ~0.96
• Protection Rating: IP20
• Dimensions (approx.): 245 mm × 185 mm × 195 mm (H × W × D)
• Weight (approx.): 5.5 kg
• Digital Inputs: 6 standard inputs
• Relay Outputs: 3 outputs
• Analog Inputs: 2 inputs
• Analog Outputs: 2 outputs
• PTC/KTY Interface: 1 input

Compliance & Certifications

• CE conformity marking according to applicable EU directives
• General product approval and EU Declaration of Conformity for industrial drives
• Designed and manufactured to Siemens industrial quality and safety standards
• RoHS compliant for hazardous substance restrictions

Applications

This MICROMASTER 440 inverter is used for variable speed control of three-phase motors in industrial automation, HVAC systems, pumps, fans, conveyors and machine drives. It provides efficient motor control, improved energy use and smooth torque delivery for a wide range of process and production environments where reliable and flexible AC drive performance is required.