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1/2 HP, 1140 RPM, NEMA Frame 56H, 208/230/460 V,
  • Three Phase
  • Rigid Base
  • Division I, Division II, Class I, Groups C & D-Class II, Groups F & G With conduit box

    Explosion-Proof For Hazardous Locations
    Underwriters Laboratories and Canadian Standards Association Listed
    General Specifications:
    These explosion-proof motors are designed and approved for application in hazardous environments having certain explosive gases or materials present.

    Features:
  • Rugged mechanical construction meeting all requirements for safety. UL and CSA listed.
  • Double shielded, pre-lubricated ball bearings are standard.
  • All motors have inherent automatic overload protection.
  • NEMA 1.0 Service Factor except as noted.
  • Explosion-proof conduit box included at no extra cost.
  • Normally-closed thermostats are standard on cast iron motors.
  • Division I areas are environments where a hazard is present continuously or would be subject to fire or explosion if the hazard was present as a result of an accident or uncommon occurrence.
  • Division II areas are environments where the threat of fire or explosion is not normally present and not likely to result in the event of an abnormal occurrence.

    Application Notes:
    These motors must be applied in accordance with the National Electrical Code, Article #500. A partial listing of explosive agents is noted below. Consult NFPA Publication 497M for a complete listing. Please note subheads above each column for qualifications of LEESON motors.
Unit of Measure

Specifications

Base

 N/A Rigid Base

Enclosure Type

 N/A Totally Enclosed Fan Cooled

Phase

 N/A Three

HP

 N/A 1/2

RPM 60 Hz

 N/A 1140

Voltage

 N/A 208 V230 V460 V

Overload Protection

 N/A Automatic

FL Amps 230 V

 N/A 2.0

% FL Eff.

 N/A 71.0

NEMA Frame

 N/A 56H

Disc. Sym.

 N/A A

C Dimension

 N/A 13.97 in

Approx. Weight

 N/A 44 lbs

Manufacturer

 N/A
Leeson

Features

N/A

  • These motors are satisfactory for operation on 50 Hz power supply at full rated horsepower.
  • Combination 56H base motors have mounting holes for NEMA 56 and NEMA 143-5T and a standard NEMA 56 shaft.Rugged mechanical construction meeting all requirements for safety. UL and CSA listed.
  • Double shielded, pre-lubricated ball bearings are standard.
  • All motors have inherent automatic overload protection.
  • NEMA 1.0 Service Factor except as noted.
  • Explosion-proof conduit box included at no extra cost.
  • Normally-closed thermostats are standard on cast iron motors.
  • Division I areas are environments where a hazard is present continuously or would be subject to fire or explosion if the hazard was present as a result of an accident or uncommon occurrence.
  • Division II areas are environments where the threat of fire or explosion is not normally present and not likely to result in the event of an abnormal occurrence.

Technical Details

N/A

    No LEESON motors are listed for Class I, Group A or B.
    Class I
    Group A: Acetylene
    Group B: Butadiene, ethylene oxide, hydrogen, propylene oxide, manufactured gases containing more than 30% hydrogen by volume.
    Group C: Acetaldehyde, cyclopropane, diethyl ether, ethylene.
    Group D: Acetone, acrylonitrile, ammonia, benzene, butane, ethanol, ethylene dichloride, gasoline, hexane, isoprene, methane (natural gas), methanol, naphtha, propane, propylene, styrene, toluene, vinyl acetate, vinyl chloride, xylene.

    Class II
    Group E: Aluminum, magnesium and other metal dusts with similar characteristics.
    Group F: Carbon black, coke or coal dust.
    Group G: Flour, starch or grain dust.