Models Available for Use with Two‑Position, Single Pole Single Throw (SPST), Line‑ (Series 40) or Low‑ (Series 80) Voltage Controls
Models Available for Use with Floating or Switched Single‑Pole, Double‑Throw (SPDT) (Series 60) Controls
Models Available for Use with Proportional Current or Voltage (Series 70) Controls
Brushless DC Submotor with Electronic Stall Protection for Floating/Modulating Models
Models Available with Combined Floating/Modulating Control in a Single Device
Brush DC Submotor with Electronic Stall Protection for 2‑Position Models
Self‑Centering Shaft Adapter (Shaft Coupling) for Wide Range of Shaft Sizes
MS4120, MS7520, and MS8120 Spring Return Direct Coupled Actuators (DCA) are used within heating, ventilating, and air conditioning (HVAC) systems. They can drive a variety of quarter‑turn; final control elements requiring spring return fail‑safe operation.
