SMC-3 Low Voltage Soft Starters

Our SMC™-3 Soft Starters are available with a current range from 3...480 A. They feature compact, true three-phase control in a cost-effective package. They include overload protection, integral bypass, and motor and system diagnostics.

Bulletin 150 SMC-3 Low Voltage Soft Starters
  • Overview
  • What's New
  • Product Selection
  • Specifications
  • Software
  • Documentation
  • Resources
  • Applications


  • Provides 3…480 A range
  • Uses rated voltage: 200…690V AC, 50/60 Hz
  • Includes five start and stop modes
  • Provides built-in electronic motor overload protection
  • Includes hold-to-test/push-to-reset button
  • Offers easy and secure setup using DIP switches
  • Provides built-in silicon-controlled rectifier (SCR) bypass/run contactor

Additional Information

  • When deciding whether to choose a soft starter or an AC drive for a particular application, the things that are important are—“Application, Application, Application!” For more on the differences between soft starters and AC drives, read our blog Why Are Drives Easier to Apply Than Soft Starters?
  • This product is designed for many applications that inlcude compressors, chillers, pumps, conveyors, and crushers.

Bulletin 150 Enclosed SMC-50 Soft Starter Completes the Enclosed SMC Product Family

Bulletin 150 SMC-3 Soft Starter

The Enclosed SMC family of soft starters is available as non-combination, combination fusible disconnect, or combination circuit breakers. They can be fully customized using a variety of options and are pre-engineered for quick factory lead times. This family of starters is also available through the Modified Standards program. Features include:

  • Reduced voltage/current spikes and line disturbances
  • Simplified compliance with electrical codes
  • Enhanced control options, inherent diagnostics, and lower installed cost
  • Can be used with conveyors, compressors, fans, pumps, and bandsaws

Learn More

Enclosed Smart Motor Controllers Product Profile [PDF]

To view commonly ordered and quickly available products, use the Product Configuration Assistant for our complete product offerings.


SMC™-3 Specifications Technical Data150-TD007


  • cULus Listed (Open Type) (File No. E96956, Guides NMFT, NMFT7)
  • CSA Certified (File No. LR 1234)
  • CE Marked (Open Type) per EMC and Low Voltage Directive
  • CCC Certified
  • Suitable for use with IE3 Motors (IEC 60034-30)

Certifications apply when product is marked. See our Product Certification site for Declarations of Conformity, certificates and other certification details.

Standards Compliance

  • CSA C22.2 No.14
  • EN/IEC 60947-1
  • EN/IEC 60947-4-2
  • UL 508

Product Certifications

See our Product Certification site for Declarations of Conformity, certificates and other certification details.


Use Connected Components Workbench software with Microsoft Visual Studio® technology to program your SMC™-3 Soft Starter products.


Smart Motor Controllers Soft Starters Family Brochure150-BR144
Controlling High Efficiency Motors BrochureIE3-BR001
Enclosed Smart Motor Controllers Product Profile150-PP007
Global Short Circuit Current Ratings Product ProfileSCCR-PP003
SMC-3 and SMC-Flex Smart Motor Controllers Selection Guide150-SG009
Enclosed Pump Panel Solutions Selection Guide150-SG011
SMC-3 Specifications Technical Data150-TD007
When to Use a Soft Starter or AC Variable Frequency Drive White Paper150-WP007
DeviceLogix Technology for Industrial Applications193-AT001
SMC-3 Reduced Voltage Solid-State Smart Motor Controllers Procurement Specifications150-SR001
More Soft Starter publications in Literature LibraryAll Languages

Can’t Find What You Need?

Browse Literature Library where you can search for additional technical and commercial publications in more languages.

Product Certifications

See our Product Certification site for Declarations of Conformity, certificates and other certification details.

Configuration & Selection Tools

  • CrossWorks — Convert competitive catalog numbers to similar Allen-Bradley® products.
  • MCS Star — Configure a Modular Motor Control System.
  • ProposalWorks — Build complete quotes and proposals.

Other Resources

  • Firmware — Obtain firmware for your SMC Soft Starters from the Product Compatibility & Download Center.
  • Procurement Specifications — Visit our online resource to find the procurement specifications for this product.
  • SMC Estimation Wizard — Obtain a more advanced analysis of both the device and the system.
  • SMC Thermal Wizard — Conduct simple thermal analysis and selection of an SMC product for a given application.
  • Knowledgebase — Visit our online resource for technical information, support chat and forums, software updates, and product safety advisories/notices.


This product is designed for many applications, including compressors, chillers, pumps, conveyors, and crushers.

Customer Success

  • Motor Control Case Studies — View our case studies site to discover how customers have applied Allen-Bradley® Motor Control products in their applications.