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250 HP, 1785 RPM, NEMA Frame 449T, 460 V
  • Three Phase
  • Cast Iron Frame
  • Rigid Base
  • Division I, Division II, with Conduit Box and Normally Closed Thermostats
  • Explosion-Proof Motors are Class I, Groups C & D-Class II, Groups F & G
  • All Ratings are Inverter Rated
  • These explosion-proof motors are not designed for vertical mounting
  • EPACT motors

    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 1.15 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 headings and footnotes for qualifications of specific LEESON motors.
Unit of Measure

Specifications

Base

 N/A Rigid Base

Phase

 N/A Three

HP

 N/A 250

RPM 60 Hz

 N/A 1785

Voltage

 N/A 460 V

FL Amps 460 V

 N/A 290

% FL Eff.

 N/A 95.0

NEMA Frame

 N/A 449T

Disc. Sym.

 N/A C

C Dimension

 N/A 51.69 in

Approx. Weight

 N/A 2600 lbs

NEMA Service Factor

 N/A 1.00

Frame Construction

 N/A Cast Iron

Agency Approvals

 N/A
EPACT Mandates

Manufacturer

 N/A
Leeson

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.

Features

N/A

  • Explosion-proof motors are Class I, Group D-Class II, Groups F & G.
  • 1.0 Service Factor
  • 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.
  • NEMA1.0 Service Factor except as noted.
  • Explosion-proof conduit box included at no extra cost.
  • 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.