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This item has been discontinued and is unavailable for purchase. For more information call 1-800-GRAINGER (472-4643).

Auto Standby Generator, Liquid, 120/208V

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  • Item # 29FC91
  • Mfr. Model # SU151HPAX04
  • UNSPSC # 26111601
  • Catalog Page # 1394
  • Shipping Weight 4784.0 lbs.
Country of Origin Not Available Country of Origin is subject to change.
Note: Product availability is real-time updated and adjusted continuously. The product will be reserved for you when you complete your order. More

Technical Specs

  • Item Automatic Standby Generator
  • Engine Cooling Method Liquid
  • kW 142.4
  • kVA Rating 178
  • Voltage 120/208
  • Height 69.6"
  • Width 49.2"
  • Length 133.9"
  • Enclosure Material Galvanized Steel
  • Fuel Type Diesel
  • Engine Brand Perkins
  • Engine Size 6.6L
  • Engine RPM 1800
  • Amps 494
  • Hz 60
  • Sound Level dBA 72
  • Automatic Volts Regulation Yes
  • Battery Included Yes
  • 12VDC Battery Charger Yes
  • Battery Requirements 13.5"L x 6.75"W x 7.5"H
  • Engine (Block Heater) Optional
  • Fault Indicator Lights Yes
  • Fuel Tank Capacity 90 gal.
  • High Temp. Alarm Yes
  • Low Oil Pressure Alarm Yes
  • Low Coolant Level Alarm No
  • Over Crank Protection Yes
  • Phase 3
  • Power Factor 0.8
  • Repeat of Exercise Cycle 7
  • Run Time Hour Meter Yes
  • Main Circuit Breaker Yes
  • Over Speed Yes
  • Includes Battery, Battery Charger, Engine Fluids, Manual, Oil Drain Pump
  • Standards ISO-8528, ISO-3046, IEC 34-1, EN 60034-1, CAN/CSA-C22.2 No14-95-No100-98
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Compliance and Restrictions

  • Hazardous material - Engines

  • This item is restricted for international sale.

  • This product contains a chemical that is regulated under California Proposition 65.

    Warning: This product contains a chemical known to the State of California to cause cancer.

    Warning: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm.


Stationary GSW Series generator provides standby or prime power in remote or emergency situations. Shuts down automatically and sounds alarm under the following conditions: low fuel level, under/over voltage, overload, and battery charge failure. Sound attenuated for quiet operation. Requires ASCO® automatic transfer switch No. 6FTE7 or 6FTE6 (sold separately).

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