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The Model MD5011S is a 1/2 HP, 115-volt, medium duty drawbar commercial door operator (for standard lift sectional doors) with a 12-foot rail. Not to exceed 10 cycles per hour, 75 cycles per day.

Part Number: MD5011S

WARNING: Cancer and Reproductive Harm -

  • Solid state or electromechanical control circuit
  • Constant pressure required to close if no entrapment devices are installed
  • All steel frame
  • V-Belt drive from motor to clutch shaft
  • Adjustable friction clutch
  • Full #65 roller chain drive
  • Quick release door arm for manual door operation
  • Standard door speed is approximately 11 inches per second
  • Standard rail and chain assembly for door up to 12' 6" high
  • Motor overload protection
  • Wired to accept reversing devices
  • Internally adjustable limit switches
  • 1/2 HP rigid base permanent split capacitor motor
  • 24-Volt control circuit with OPEN, CLOSE and STOP 3-button station
  • OPEN button (and single button) will automatically override down travel and reverse door to the full open position
  • External terminals for single button (residential type) radio control
Additional Rail Option Up to 14' 6" high door
Max. Door Height 14 ft.
Warranty 2 yrs
Max. Duty Cycle 10 cycles per hour, 75 cycles per day