What is Soft Starter?

Definition

A device that gradually ramps up voltage to a motor during starting, reducing inrush current and mechanical stress. Soft starters use thyristors to control voltage and are simpler than full variable speed drives.

Related Terms

SCR

Silicon Controlled Rectifier — a four-layer semiconductor device that conducts c...

AC Drive

An electronic device that controls the speed and torque of an AC motor by varyin...

Bypass Mode

An operating mode where a motor runs directly from mains power, bypassing the dr...

Browse all Drives terms (76)

Previous in DrivesSoft Start Next in DrivesSpace Vector Modulation

Need help with Soft Starter?

Our engineers have 32+ years of experience diagnosing and repairing drives equipment. Get expert support for your soft starter issues.

Contact Our Experts Send a Repair Job

Back to Full Glossary502 terms across all categories