The standard for flexibility, simplicity, and reliability.

Square D introduced Type S starter in 1965 and after nearly 50 years, it continues to be the industry standard.

Type S starters are easy to customize and provide excellent service life; just two reason why more electrical contractors prefer Square D contractors and starters to any other brand.

Type S Starter

Why Type S is the industry Standard: 

  • Flexible with four overload relays: Motor Logic™ solid state, TeSys™ T communicating solid state, Adapted Bimetal, and melting alloy types
  • Customizable with hundreds of combinations of contractors, starters and combination starters, pump panels, two-speed starters, reduced-voltage starters, enclosure options, and accessories
  • Robust design and reliable build for long mechanical life and electrical endurance
  • Serviceable by replacing contacts and coils rather than replacing the entire products; simply service the part that is worn out 
  • Simple catalog numbering for easy and fast ordering

Key Features: 

  • Bellcrank design promotes superior electrical and mechanical life
  • Green Premium™ design reduces hazardous substances for RoHS compliance
  • NEMA® Sizes 00-7 with horsepower range up to 600 HP @ 480 Vac
  • Normally open (N/O) holding circuit contact for three-wire control is standard
  • Sizes 00-2 contactors use a Class 9999 SX11 auxiliary contact as the holding circuit contact 
  • Sizes 3-7 contactors use a Class 9999 SX6 auxiliary contact as the holding circuit contact
  • Size 00-1 single-phase contactors use a power pole as the holding circuit contact with the same rating as the power contacts 
Square D Type S contactors and starters NEMA product video.
Focusing on NEMA contactors and starters that are in the Square D™ Type S product line, this course introduces Type S features and applications. Supporting a maximum of 600 volt in NEMA sizes 00-7 contactors and starters, and having 4 overload relay options, common uses of Type S products includes construction, infrastructure, industrial markets, and commercial building applications.