2025 Generac Mobile Stationary Generators SG050NA

Information

2025 Generac Mobile Stationary Generators SG050NA

Keep all your business’s essentials up and running with Generac's 4.5L 50kW generator. Our factory-built Generac engines are easy to maintain and provide extreme endurance. We test every engine in our state-of-the-art lab, so you can be assured they will give you the performance you need each and every time. Generac is one of North America’s largest suppliers of power generation equipment. For more than five decades, Generac has designed and manufactured diesel, natural gas, and bi-fuel generators that meet the demands of any application.

Features may include:

Spark-Ignited Engine
  • Generac builds its spark-ignited engines from the block up utilizing advanced engineering expertise.
POWERZONE® Controller
  • Generac engineers its generator controls with safety and convenience as top priorities.
Generator Enclosure
  • Generac manufactures its own enclosures, ensuring each unit combines the highest level of durability, noise reduction, weather resistance, and streamlined design.
Industrial Alternator
  • Generac industrial alternators are machine wound, machine inserted, and machine varnished for the ultimate in consistency.

Photos

Highlights

  • Norton, New Brunswick
  • 2025
  • Generac Mobile
  • Stationary Generators SG050NA
  • Natural Gas, Propane
  • Available
  • Open Set (Includes Exhaust Flex): 37.3 in (947 mm) | Weather Protected Enclosure: 38.0 in (965 mm) | Level 1 Acoustic Enclosure: 38.0 in (965 mm) | Level 2 Acoustic Enclosure: 38.0 in (965 mm)
  • Open Set (Includes Exhaust Flex): 44.4 in (1,128 mm) | Weather Protected Enclosure: 57.5 in (1,461 mm) | Level 1 Acoustic Enclosure: 57.5 in (1,461 mm) | Level 2 Acoustic Enclosure: 57.5 in (1,461 mm)

Specifications

  • 2025
  • Generac Mobile
  • Stationary Generators
  • SG050NA
  • General
  • Generac
  • 4
  • In-Line
  • 275.0 qt (4.5 L)
  • 4.5 in (114.3 mm)
  • 4.25 in (107.95 mm)
  • 9.94:1
  • Coil Near Plug Solid State Inductive
  • System Type: Pressurized Closed | Closed Coolant Recovery System | UV/Ozone Resistant Hoses | Factory-Installed Radiator | 50/50 Ethylene Glycol Antifreeze | Radiator Drain Extension
  • Horsepower at Rated kW (Standby/Prime): 77 hp / 69 hp
  • Intake Air Method: Naturally Aspirated
  • Electronic
  • Fuel Shutoff: Dual | NPT Fuel Connection on Frame | Primary and Secondary Fuel Shutoff
  • Natural Gas, Propane
  • Electronic
  • Natural Gas 25% (Standby/Prime): 204 scfh (5.8 m3/hr) / 201 scfh (5.7m3/hr) | Natural Gas 50% (Stadnby/Prime): 343 scfh (9.7 m3/hr) 7 298 scfh (8.4 m3/hr) | Natural Gas 75% (Standby/Prime): 456 scfh (12.9 m3/hr) / 394 scfh (11.2 m3/hr) | Natural Gas 100% (Standby/Prime): 621 scfh (17.6 m3/hr) / 495 scfh (14.0m3/hr) | Propane 25% (Standby/Prime): 107 scfh (3.0 m3/hr) / 105 scfh (3.0 m3/hr) | Propane 50% (Standby/Prime): 155 scfh (4.4 m3/hr) / 138 scfh (3.9 m3/hr) | Propane 75% (Standby/Prime): 198 scfh (5.6 m3/hr) / 172 scfh (4.9 m3/hr) | Propane 100% (Standby/Prime): 249 scfh (7.1 m3/hr) / 209 scfh (5.9 m3/hr)
  • Size: See Battery Index 0161970SBY | Battery Voltage: 12 VDC
  • Standard
  • System Voltage: 12 VDC | Ground Polarity: Negative (-)
  • Standard Model: K0080124Y21 | Poles: 4 | Field Type: Revolving | Insulation Class — Rotor: H | Insulation Class — Stator: H | Total Harmonic Distortion (THD): <5% | Telephone Interference Factor (TIF): <50 | Standard Excitation: Synchronous Brushless | Bearings: Sealed Ball | Coupling: Direct via Flexible Disc | Voltage Regulator Type: Full Digital | Regulation Accuracy (Steady State): ±0.25% | UL2200 GENprotect™ | Class H Insulation Material | 2/3 Pitch | Skewed Stator | Brushless Excitation | Sealed Bearing | Full Load Capacity Alternator
  • Frequency Regulation (Steady State): 0.25
  • Fan: 2,100 RPM | Rated Engine (Standby/Prime): 1,800 RPM/ 1,800 RPM | Piston (Standby/Prime): 1,275 ft/min (389 m/min)/ 1,275 ft/min (389 m/min)
  • Maximum Operating Ambient Temperature: 122 °F (50 °C) | Maximum Operating Ambient Temperature (Before Derate): See Bulletin No. 0199270SSD | Exhaust Temp (Rated Output - Post Silencer) Standby/Prime: 1,361 °F (738.3 °C) / 1,361 °F (738.3 °C)
  • Oil: Gear Driven
  • Type: Full Flow Spin-On Cartridge
  • Coolant Flow: 38 gpm (142.7 Lpm) | Exhaust Flow (Rated Output) Standby/Prime: 279 cfm (7.9 m3/min) / 256 cfm (7.2 m3/min)
  • Air Flow (Fan Air Flow Across Radiator) - Open Set: 3,511 cfm (99.4 m3/min) | Flow at Rated Power (Standby/Prime): 99.7 cfm(2.8m3/min) /n 90.3 cfm (2.6 m3/min)
  • Operating Fuel Pressure (NG): 5 - 14 in H2O (1.2 - 3.5 kPa) | Operating Fuel Pressure (LP): 7 - 14 in H2O (1.7 - 3.5 kPa) | Maximum Radiator Backpressure: 0.5 in H2O (0.12 kPa) | BMEP (Standby/Prime): 126 psi (865 kPa) / 113 psi (779 kPa) | Maximum Exhaust Back pressure (Standby/Prime): 0.75 in Hg (2.54 kPa) / 0.75 in Hg (2.54 kPa)
  • Fan Diameter: 20 in (508 mm)
  • Open Set (Includes Exhaust Flex): 78.1 in (1,984 mm) | Weather Protected Enclosure: 94.8 in (2,408 mm) | Level 1 Acoustic Enclosure: 94.8 in (2,408 mm) | Level 2 Acoustic Enclosure: 94.8 in (2,408 mm)
  • Open Set (Includes Exhaust Flex): 37.3 in (947 mm) | Weather Protected Enclosure: 38.0 in (965 mm) | Level 1 Acoustic Enclosure: 38.0 in (965 mm) | Level 2 Acoustic Enclosure: 38.0 in (965 mm)
  • Open Set (Includes Exhaust Flex): 44.4 in (1,128 mm) | Weather Protected Enclosure: 57.5 in (1,461 mm) | Level 1 Acoustic Enclosure: 57.5 in (1,461 mm) | Level 2 Acoustic Enclosure: 57.5 in (1,461 mm)
  • Engine: 21 qt (20 L)
  • Coolant Capacity: gal (L) 3 gal (11.4 L)
  • Open Set (Includes Exhaust Flex): 1,675 - 1,748 lbs (760 - 793 kg) | Weather Protected Enclosure Steel: 2,160 - 2,233 lbs (980 - 1,013 kg) | Weather Protected Enclosure Aluminum: 1,894 - 1,965 lbs (859 - 891 kg) | Level 1 Acoustic Enclosure Steel: 2,258 - 2,329 lbs (1,024 - 1,056 kg) | Level 1 Acoustic Enclosure Aluminum: 1,987 - 2,061 lbs (901 - 935 kg) | Level 2 Acoustic Enclosure Steel: 2,341 - 2,414 lbs (1,062 - 1,095 kg) | Level 2 Acoustic Enclosure Aluminum: 2,071 - 2,144 lbs (939 - 972 kg)
  • Number of Main Bearings: 5 | Lifter Type: Hydraulic Roller | Fan Type: Pusher | Oil Drain Extension | Heavy Duty Air Cleaner | Level 1 Fan and Belt Guards (Open Set Only) | Factory Filled Oil and Coolant | Critical Silencer | Oil Temperature Sender with Alarm | Air Filter Restriction Indicator | Battery Charging Alternator | Battery Cables | Battery Tray | Solenoid Activated Starter Motor | Internal Genset Vibration Isolation | Separation of Circuits - High/Low Voltage | Separation of Circuits - Multiple Breakers | Wrapped Exhaust Piping |
  • Connecting Rods: Forged Steel, Fractured Split, Bushingless | Cylinder Head: Cast Iron | Cylinder Liners: Cast Iron | Piston Type: Cast Aluminum Flat Top | Crankshaft Type: Forged Steel | Intake Valve Material: Stainless Steel | Exhaust Valve Material: Stainless Steel | Hardened Valve Seats: High Steel Iron Alloy | Stainless Steel Flexible Exhaust Connection | Rubber-Booted Engine Electrical Connections
  • 2 Year Limited Warranty (Standby and Demand Response Rated Units) | 1 Year Limited Warranty (Prime Rated Units)