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2-year Warranty

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Control Techniques SP3403

Rated 5/5 on 3 reviews

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MANUFACTURER: Control Techniques

DESCRIPTION: 400V AC Panel Mount Drive


16 in stock

2 Year warranty

Part NumberSP3403
ManufacturerControl Techniques
TypeAC Drives
Warranty2 Year
Typical Motor Output Power (HP)30
Input Voltage380 - 480VAC
Frame Size3
Normal Duty
Max Cont. Current (A)56
Typical Motor Output Power (kW)30
Typical Motor Output Power (HP)40
Heavy Duty
Max Cont. Current (A)46
Typical Motor Output Power (kW)22

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 SP3403 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 SP3403 we also repair a wide range of other Control Techniques 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 SP3403, 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.

  • Shipping Weight : 45lbs

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  • Order within the next 23 hours and 6 minutes.
  • If you order between 4pm and 6pm EST, you will be charged a small rush fee.

Ask about exchanging your faulty SP3403 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.

Control Techniques SP3403 Overview


The Unidrive SP series module SP3403 is a heavy-duty AC drive manufactured by Control Techniques for use with your industrial needs. It is an electronic unit designed to handle the needs of certain modules.  The SP3403 complies with Low Voltage Directive 72/23/EEC is applicable for use with motor modules and controller modules as well as electrical protection components. Together with these and other equipment help establish a productive system that complies with international standards.  These pieces of equipment must be installed correctly to meet these standards.

Heavy-duty modules are appropriate for use when you require constant torque for your applications. It is also used when an application has to have high overload capabilities or in cases where you would need to use full torque at low speeds.  This occurs when operating winders and hoists and the like. By default, thermal protection is set to protect induction motors that are force ventilated and servo motors with permanent magnets. 


Some specifics about the heavy-duty SP3403 include a maximum continuous output current of 46 A and an open-loop peak current of 69 A.  The closed-loop peak current is 80.5 A.  At 400 V, the nominal power is 22 kW and at 460 V, the motor power is 30 hp. 

Depending on your chosen motor, the max percentage overload limit varies. There are many factors where the changes in maximum possible overload occur. There can be variables in the motor rated current and the motor power factors as well as motor leakage inductance. 

The module number on the label indicates the particulars of the SP3403. The SP indicates it is part of the Control Techniques Solutions Platform of complete Unidrive units. The next part is the number 3 which indicates the frame size of the SP followed by the voltage rating. In this instance, it is the number 4 which indicates 380 V- 480 V. The 0 indicates that this unit is a wall mount drive. The final number, a three, indicates the current rating step. 


The Control Techniques 3403 Unidrive operates in several modes. Its design is exceptional for each of these modes. 

- Open-loop mode -includes open-loop vector mode, Fixed V/F mode (V/Hz), and 

Quadratic V/F mode (V/Hz)

In this mode, the drive applies power to the motor by using user indicated frequencies.

The two things informing motor speed are the output frequency of the drive and slip due to mechanical load. One way the drive can improve the speed control of the motor is by applying for the slip compensation. Low-speed performance is determined by whether you use V/F mode or open-loop vector mode. 

- RFC mode

This mode gives you closed-loop control without requiring position feedback. It accomplishes this by using current, voltages, and key motor parameters to estimate your motor speed.

- Closed-loop vector

This is used with an induction motor when there is a feedback device installed. 

- Servo

This mode is used with permanent magnet brushless motors, also with a feedback device installed.

- Regen

Control Techniques products are manufactured in United Kingdom and are designed for Metal production, paper processing, and material conveying usage. They come with a 2-year warranty from MRO Electric. We also carry AC Drives from other manufacturers such as Siemens and Yaskawa.

Contact Us Today For More Information About Control Techniques Products

Check out the rest of our Control Techniques 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 SP3403, 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 SP3403 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.

5 stars

4.9 Overall Satisfaction Rating

Over 1700 Ratings from Actual Customers

Read Our Reviews

Very happy with the overall service, delivery, communication and delivery,

Conley Cooke

I needed a special drive, found it, and I was quickly assisted by Joe Kaminski. Everything was exactly as it should be....


We have an older DMU80 CNC Machine and the Handheld Control was damaged beyond repair. MRO was very helpful in confirmin...

Abbey-Purchasing Specialist