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

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Seimens MICROMASTER 440 VFD Inverter 3 Phase 380V-480V 6SE6440-2UD21-1AA1

The Seimens MICROMASTER 440 VFD Inverter is a powerful and reliable solution for industrial automation needs. With a rated power of 1100W and the ability to operate in three-phase systems, this inverter ensures efficient control of your motors. Designed for various applications, it offers excellent performance and flexibility in demanding environments.

Specifications

Attribute	Details
Control Mode	Torque Control
Rated Power	1100W
Nominal Voltage	480V
Power Phase Number	Three Phase
Brand Name	Seimens
Model Number	6SE6440-2UD21-1AA1
Type	VFD
Application	Industrial Automation
Size	73mm x 173mm x 149mm
IP Level	IP20
Single Package Size	20 x 20 x 10 cm
Single Gross Weight	1.500 KG

Key Features

High efficiency with 1100W rated power.
Torque control mode for precise motor control.
Designed for three-phase systems, ideal for industrial use.
Compact size for easy installation in various environments.
IP20 rating for protection against solid objects.

Applications

Suitable for conveyor systems.
Used in pumps and fans.
Ideal for industrial machinery and equipment.
Perfect for HVAC systems.
Can be applied in material handling systems.

Product Info Gallery

Shipping Timeframes: All orders are processed within 2-5 business days (excluding weekends and holidays). After your order has been processed, the estimated delivery time is before 11 Dec, 2026, depending on customs, Please note that due to high demand, some items may experience longer shipping times, which will be communicated at order confirmation email.
Order Processing Time: Please allow 2-5 business days for us to process your order before it is shipped . Orders placed after 16:00 on Fridays, or during weekends and public holidays, will begin processing on the next business day. Processing times may be extended during peak seasons or sales events.
Manufacturing Time: Some products needs manufacturing time, the manufacturing process will take approximately 10-30 business days depending on the product. This timeframe may vary depending on the complexity of the product and current demand. but this will be communicated with you during order confirmation.
Returns and Exchanges: We offer a 30-day return policy for most items. If you are not completely satisfied with your purchase, you may return it within 30 days of receipt for a refund or exchange. Items must be unused, in their original packaging, and accompanied by proof of purchase. Return shipping costs are the responsibility of the customer, unless the item was damaged or defective upon arrival.

1. What is the Siemens MICROMASTER 440 6SE6440-2 series VFD?

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).

2. What are the key electrical specifications of this VFD?

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.

3. What control modes does the MICROMASTER 440 support?

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.

4. Is this drive suitable for my 3-phase motor?

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.

5. What are the physical dimensions and weight of the unit?

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.

6. What does the IP20 rating mean for installation?

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.

7. Are there different model numbers and what do they mean (for example 6SE6440-2AD27-5CA1 vs 6SE6440-2UD21-1AA1)?

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.

8. What kind of protections does the drive provide (overcurrent/overvoltage, thermal, etc.)?

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.

9. How is the MICROMASTER 440 programmed or configured?

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.

10. What communications protocols are available?

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.

11. What are typical applications for this drive?

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.

12. What are the installation and cooling requirements?

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.

13. Do I need EMC filters, reactors or surge protection?

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.

14. Is there a warranty or technical support for this product?

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.

15. Where can I find the manual, datasheet and firmware information?

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.