PLEASE NOTE: Effective 2019, we no longer supply Control Techniques variable frequency drives and components. We have drives from several other manufacturers which can meet or exceed the performance characteristics of the Control Techniques line. Simply complete the form below, or contact us with the model of your current or obsolete Control Techniques drive and we’ll be glad to identify a suitable replacement.

Also, the Fincor and Saftronics lines of AC variable frequency drives, DC variable speed drives, and reduced voltage starters were once owned by Emerson but have been obsolete for several years. However, we have many years’ experience working with these drives and can quickly identify replacements capable of exceeding the quality and performance of these older drive technologies. For a suitable replacement, fill out the form below or contact us with your drive or application requirements, and we’ll handle it from there!

Commander SX

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NEMA 4X Washdown Drive

Obsolete Drive Replacement RFQ -

If you need a replacement for an existing obsolete drive, complete the following form and we will send you a quote for a suitable replacement.

* Required

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Performance Advantage

Open loop vector control with true space vector modulation

  Precise control algorithm provides full torque down to 1 Hz for exceptional performance

Access to multiple parameter levels

  Customizes the drive to meet each user’s needs: simple (level 1), flexible (level 2) and advanced (level 3)

XpressKey cloning module

  Provides fast and cost-effective drive-to-drive parameter transfer and storage with no PC required

Static auto-tune 

  Allows fast motor/drive optimization without motor shaft rotation

Configurable analog and digital I/O

  Customizes drive to the specific application

S-ramp accel / decel profiling

  Provides smooth speed transitions, minimizing machine “jerk”

Built-in independent PID control

  Eliminates the need for an external PID controller while providing “outer loop” control of a process variable

Built-in Motorised Potentiometer

  Emulates the functionality of the traditional Motorized Potentiometer with increase / decrease pushbuttons

8 Preset speeds with independent accel / decel ramps

  Allows predetermined speed sequencing via logic inputs

Selectable Stopping modes including Ramp, Coast, DC Injection, and Dynamic Braking (except size 1) 

  Added flexibility meets many application requirements

Full EMC compliance with optional filter

  Meets global standards for worldwide use


200 to 240 VAC 3 Phase + 10% 
Motor HP kW Input Phase 100% Output Current (A) 150% Overload Current for 60s Size Order Code Price
1 0.75 3 4.5 6.8 1 SX13200075PB
2 1.5 3 8 12 2 SX23200150PB
3 2.2 3 10 15 2 SX23200220PB
5 4.0 3 16.5 25 3 SX33200400PB
380 / 480 VAC + 10% 
Motor HP kW Input Phase 100% Output Current (A) 150% Overload Current for 60s Size Order Code Price
1 0.75 3 2.5 3.8 1 SX13400075PB
2 1.5 3 4.5 6.8 1 SX13400150PB
3 2.2 3 6 9 2 SX23400220PB
5 4.0 3 10 15 2 SX23400400PB
7.5 5.5 3 13.5 20 3 SX33400550PB
10 7.5 3 16.5 25 3 SX33400750PB
Motor horsepower based on typical 230 / 460 VAC four-pole motor ratings. Select model based on actual motor current rating.
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Control Techniques Commander SX NEMA 4X Washdown AC Drives Order String

Information provided by Control Techniques, a world leader in the design, production and marketing of electronic drives for the control of electric motors.