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Model EMG Hazardous Duty Gear Reduced Hoist Operator

PowerMaster Model EMG operators are designed for use on Sectional Doors with High Lift or Vertical Lift and Rolling Service Doors and Grilles in NEMA 7&9 Hazardous Locations.

  • High-starting torque explosion proof motor with full overload protection
  • Heavy duty full voltage reversing contactor
  • Pre-wired for 3-button station, 1-button station, intrinsically safe automatic reversing equipment
  • Floor level disconnect with chain hoist assembly and electrical interlock for manual operation
  • Dynamic brake
Cycles Per Hour##
Power Options115V, 230V, 460V
Horsepower1/2 – 2
Battery BackupNO
Travel Speed##
Shipping Weight (approx.)182lbs
GJ Line Drawing


Explosion Proof Gear Reduced Hoist Operator

Specifications & Features

  • Available Horsepower: 1/2HP – 2HP
  • High Starting Torque Explosion-proof Motor with Full Overload Protection
  • Heavy Duty, Full Voltage Reversing Contactor
  • 3 Button NEMA 7/9 Control Station included
  • 24 VAC Control Circuit pre-wired for 3-Button Station, 1-Button Station, and intrinsically safe Automatic Reversing Equipment, and all types of access control equipment
  • Mechanically Self-locking Gear Reducer (Oil bath type)
  • Dynamic Brake
  • Heavy Duty, Corrosion Resistant #50 Roller Chain and Drive Sprocket included
  • Floor Level Disconnect w/Chain Hoist Assembly & Electrical Interlock (for manual operation)
  • Baked on Powder Coat Finish
  • Shipping Weight: Approximately 182 lbs

Manual / Cut Sheet

Wiring Diagrams

Model Options