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STA 1 Series

Our STA 1 operator is optimal for spring-balanced sectional doors. This is ensured by a gear unit developed specifically for this application with a rolled worm shaft and a bronze worm wheel, as well as a special motor that provides a great deal of power in a very tight space. The design of the operators is extremely compact, the housing very slim. The cable sets for connecting the motor and controller feature plug-in connectors. The operators from the STA-I series are available with a standard hollow shaft and, on request, with a special hollow shaft, for example with a diameter of 30.0 mm, 31.75 mm, 35.0 mm. The limit switch is activated by an absolute encoder.


  • Standard hollow shaft ø = 25.4 mm or on request available with special hollow shaft
  • 400 V, 3-phase or 230 V, 1-phase
  • Control unit CS 320 or CS 255 AC, extendable using MS bus modules
  • 20 or 30 (HD) opening cycles per hour
  • KE (emergency hand chain), E (quick release) or E/KE (emergency hand chain with maintenance release)
  • Digital limit switch
  • As a silent version with single-phase 230 V motor

About the Features and Functions

Download Documents

Commercial Door Operator Brochure

PDF – 6.8 MB
Language: English

Download Technical Data

PDF – 255.9 KB
Language: English

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