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2-year Warranty

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Siemens 6SE6440-2UD31-1CA1

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2 Year warranty

Part Number6SE6440-2UD31-1CA1
TypeAC Drives
Model #6SE64402UD311CA1
Warranty2 Year
Power Rating11 kW
Phase3 Phase
3 Phase Drive Horsepower Rating:15 hp
Output Current Rating26A (CT) / 32A (VT)
CategoryAC Drive
Control TypeFixed Frequency - Programmable (V/Hz)
Input Voltage Rating380-480V AC
Motor TypeSquirrel Cage Induction
Height9.64 in
Width7.28 in
Depth7.67 in
ClassClass II

Our Repair Services

MRO Electric repairs CNCs, PLCs, Servo/Spindle Drives, Motors, Amplifiers, VFDs, HMIs, and more, most of which can be repaired in only 3-5 days.

Repair Benefits

MRO can restore your failed 6SE6440-2UD31-1CA1 to remanufactured condition and save you up to 75% compared to buying new. We offer standard repair pricing to ensure you the best value for your repair.

Our certified technicians use rigorous testing procedures to ensure your parts are restored to fully functioning condition. Our team proudly stands behind all repairs by providing a minimum 2-year warranty.

Our technicians have vast experience with most manufacturers and models. In addition to this 6SE6440-2UD31-1CA1 we also repair a wide range of other Siemens products, so if you don’t see the model you need, please contact us.

Core Exchange

If you are interested in getting credit for your faulty 6SE6440-2UD31-1CA1, just let us know, and we can issue you an RMA to send it in as an exchange. Our exchange program provides you with savings and keeps us stocked for the next time you need anything.

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Ask about exchanging your faulty 6SE6440-2UD31-1CA1 for credit when ordering from MRO Electric

MRO Electric provides a 2-year warranty on every item we sell and repair. We stand behind all of our products and guarantee them for the full 2 years. If there is an issue with any of our products within the warranty period, we will evaluate the unit and repair or replace it under warranty.

Siemens 6SE6440-2UD31-1CA1 Overview

Siemens products are manufactured in Germany and are designed for Automotive, aerospace, power generation, and electronics usage. They come with a 2-year warranty from MRO Electric. We also carry AC Drives from other manufacturers such as FANUC and Yaskawa.

Micromaster 440 6SE64402UD311CA1

The Siemens 6SE64402UD311CA1, part of the Micromaster 440 (MM440) series, is a powerful and versatile AC frequency inverter designed to drive 3-phase motors with a power rating of 11 kW (equivalent to 15 horsepower). Engineered for precision and efficiency, this drive is a go-to solution for various industrial applications, offering reliable performance and robust control capabilities.


As a 3-phase drive, the 6SE64402UD311CA1 is well-suited for industrial setups that require continuous and stable power delivery. Its output current rating of 26A (for Current Transformers) or 32A (for Voltage Transformers) ensures consistent power flow to the connected motor, promoting smooth and efficient operation. The drive's capability to operate in either Constant V/F (Voltage/Frequency) mode or Sensorless Flux Vector control mode provides flexibility in matching the control strategy to the specific motor and application requirements.

This Siemens AC drive features an input voltage rating of 380-480V AC, making it compatible with a wide range of power supplies commonly found in industrial environments. The inclusion of both analog and digital inputs and outputs (2 analog inputs, 6 digital inputs, 2 analog outputs, and 3 relay outputs) offers versatile connectivity options, allowing for integration with various control systems and enabling precise control over the motor's performance.


One notable feature of the 6SE64402UD311CA1 is its robust overload capabilities. It can handle high overload conditions, sustaining 150% of its rated current for up to 60 seconds, and even higher loads of 200% for 3 seconds, when operating at 11 kW in high overload mode. For applications where fan or pump operations are required, the drive can support an overload of 110% for 60 seconds or 140% for 3 seconds when running at 15 kW. This level of overload protection ensures the drive's durability and reliability in demanding operating conditions.

The drive's speed control range spans from 0Hz to an impressive 650Hz, providing the flexibility to accommodate a wide variety of motor speed requirements. For applications where controlled deceleration or braking is necessary, the drive can be connected to an external braking resistor with a minimum resistance of 56 Ohms. This feature enhances safety and control, particularly in scenarios where rapid motor deceleration is crucial.


Installation and maintenance of the Siemens 6SE64402UD311CA1 are straightforward. The drive's compact design, with dimensions of 185mm wide, 245mm high, and 195mm deep, allows for versatile mounting options. It can be wall-mounted in a clean environment or placed in a cubicle, with specific ventilation requirements taken into account to ensure proper heat dissipation. The drive's operating temperature range of -10°C to +50°C makes it suitable for a variety of working environments. The Siemens 6SE64402UD311CA1 is compatible with various operator panels that can be purchased separately. These panels offer different levels of control and monitoring, catering to users' specific needs.

In conclusion, the Siemens 6SE64402UD311CA1 AC frequency inverter from the Micromaster 440 series stands as a robust and versatile solution for driving 3-phase motors in industrial settings. With its impressive power rating, advanced control capabilities, and reliable performance, this drive offers the precision and efficiency required to meet the demands of diverse industrial applications. Whether it is for fan, pump, or other motor-driven operations, the 6SE64402UD311CA1 delivers the power and control needed to optimize processes and ensure smooth and efficient operations.

Contact Us Today For More Information About Siemens Products

Check out the rest of our Siemens product line. Whether it's using our online instant quote feature, giving us a call at (800) 691-8511, or emailing us at, we strive for customer satisfaction first. This means lower prices and better service for you. For more products like 6SE6440-2UD31-1CA1, take a look at more from our AC Drives line. If your current unit has gone bad, take advantage of our Core Exchange program for the most inexpensive route. You can learn more about this program on our FAQ page here. We offer a repair service on all of our 6SE6440-2UD31-1CA1 products that keep your downtime to a minimum. To stay up to date on manufacturer news, as well as access any of our datasheets, manuals, or other documentation, we suggest you take a look at our blog.

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