Seimens MICROMASTER 440 VFD Inverter 3 Phase 380V ,6SE6440-2AD27-5CA1

The MICROMASTER 440 is a compact three-phase variable frequency drive (VFD) from Siemens designed for industrial motor control. It provides precise speed/torque control for applications such as conveyors, pumps, fans, HVAC and material handling. The listing references models in the 6SE6440-2 series (for example 6SE6440-2UD21-1AA1 and 6SE6440-2AD27-5CA1).

The drive is a three-phase VFD rated for nominal input voltage around 480 V (supports typical three-phase 380–480 V networks) with a rated motor output of 1100 W according to the provided specification. Exact input voltage range and current ratings should be confirmed on the nameplate or datasheet for the specific model variant.

This unit supports torque control mode (as listed), and like other Micromaster 440 drives it typically supports V/f control and closed-loop or sensorless vector control depending on the firmware and option modules. For exact supported control modes for a specific variant, consult the product manual or datasheet.

It is suitable for three-phase motors with power at or below the drive's rated output (1100 W for the listed unit) and with matching voltage and current requirements. Always verify motor voltage, rated current and required control type against the drive's nameplate and datasheet before connecting.

The supplied dimensions are 73 mm x 173 mm x 149 mm (drive body) and the single package size listed is approximately 20 x 20 x 10 cm. The gross weight is about 1.5 kg. Confirm dimensions for panel cutouts and clearances from the official installation manual.

IP20 indicates protection against solid objects greater than 12 mm (hands/fingers) but no protection against water ingress. The drive must be installed inside a suitably rated control cabinet or enclosure if exposure to dust, moisture or liquid is possible.

Yes — MICROMASTER 440 drives use different order numbers to indicate voltage range, I/O and option cards, firmware, and factory settings. Model suffixes define specific feature sets. Always verify the exact order code/nameplate to ensure you have the correct variant and consult the Siemens datasheet for that order number.

Micromaster drives typically include standard protections such as overcurrent, overvoltage, undervoltage, overload/thermal protection and short-circuit detection, but the exact trip thresholds and behaviors depend on firmware and configuration. Refer to the official manual for detailed protection behavior and parameter settings.

Configuration is done through drive parameters accessible from an operator keypad or optional operator panel, and via supported service/engineering tools. Some variants also support communication modules for remote programming. See the product manual for parameter lists and programming procedures.

Available communications and fieldbus options depend on the exact drive variant and fitted option modules. The Micromaster 440 family can support protocols such as Profibus, Profinet, DeviceNet and others via adapter modules. Check the specific model's datasheet or ordering code for included/available communications options.

Typical applications include conveyor systems, pumps and fans, industrial machinery, HVAC systems and material handling equipment — essentially any application requiring variable speed or torque control of three-phase motors within the drive's power rating.

Install the drive in a clean, ventilated control cabinet with adequate clearance for air flow (follow the minimum distances specified in the manual). Avoid mounting near heat sources or in areas with excessive dust, corrosive gases or moisture. If the environment requires it, use a higher-rated enclosure or additional cooling/filters.

Depending on local EMC regulations, cable length and the driven motor, you may need line filters, output reactors or surge protection to meet EMC or harmonic requirements and to protect motor bearings. Check the Siemens installation manual and local regulations to determine required accessories.

Warranty and support terms vary by supplier, region and whether the unit is new, refurbished or used. For warranty details and official technical support, contact Siemens (or your authorized distributor) and provide the exact model/order code and serial number.

Download the official MICROMASTER 440 manuals, datasheets and firmware updates from the Siemens Industry Support website or request them from your Siemens sales contact. Always use documentation that matches the exact order number printed on the drive nameplate.