2025 Generac Mobile Stationary Generators SD250

Information

2025 Generac Mobile Stationary Generators SD250

Key components on these generators are designed and manufactured by Generac, so you know they are tested, tough and proven, with easily available replacement and service parts.

Features may include:

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.
POWERMANAGER® CONTROLLER
  • Generac engineers its generator controls with safety and convenience as top priorities.

Photos

Highlights

  • Edmonton, Alberta
  • 2025
  • Generac Mobile
  • Stationary Generators SD250
  • Ultra Low Sulfur Diesel Fuel #2 | Specifications: ASTM
  • Available

Specifications

  • 2025
  • Generac Mobile
  • Stationary Generators
  • SD250
  • General
  • Iveco/FPT
  • EPA Emissions Compliance: Stationary Emergency | EPA Emissions Reference: See Emission Data Sheet
  • 6
  • In-line | Direct Injection
  • 530.91 in3 (8.7 L)
  • 4.61 in (117 mm)
  • 5.31 in (135 mm)
  • 16.5:1
  • Air Method: Turbocharged/Aftercooled
  • Electronic Isochronous
  • Closed | Closed Coolant Recovery System | UV/Ozone Resistant Hoses | Factory-Installed Radiator | Radiator Drain Extension | 50/50 Ethylene Glycol Antifreeze | 120 VAC Coolant Heater
  • Horsepower at Rated kW: 389 hp | Three-Phase 120/208 VAC @0.8pf: 250 kW / 867 Amps | Three-Phase 120/240 VAC @0.8pf: 250 kW / 752 Amps | Three-Phase 277/480 VAC @0.8pf: 250 kW / 376 Amps | Three-Phase 346/600 VAC @0.8pf: 250 kW / 301 Amps
  • 1,800 RPM
  • Filtering (Microns): 5 | Fuel Lockoff Solenoid | Primary Fuel Filter
  • Ultra Low Sulfur Diesel Fuel #2 | Specifications: ASTM
  • Common Rail
  • 25%: 5.5 (20.8 Lph) | 50%: 10.4 gph (39.4 Lph) | 75%: 14.8 gph (56.0 Lph) | 100%: 18.5 gph (70.0 Lph)
  • Size: See Battery Index 0161970SBY | Voltage: 12 VDC
  • Alternator: Standard
  • System Voltage: 24 VDC | Ground Polarity: Negative
  • Standard Model: K0250124Y21 | Poles: 4 | Field Type: Revolving | Insulation Class - Rotor: H | Insulation Class - Stator: H | Total Harmonic Distortion: <5% | Telephone Interference Factor (TIF): <50 | Standard Excitation: Permanent Magnet Excitation | Bearings: Single Sealed Cartridge | Coupling: Direct via Flexible Disc | Voltage Regulator Type: Digital | Regulation Accuracy (Steady State): ±0.25% | GENprotect™ | 12 Leads (3-Phase, Non 600V) | Class H Insulation Material | Vented Rotor | 2/3 Pitch | Skewed Stator | Auxiliary Voltage Regulator Power Winding | Permanent Magnet Excitation | Sealed Bearings | Automated Manufacturing (Winding, Insertion, Lacing, Varnishing) | Rotor Dynamically Spin Balanced | Amortisseur Winding | Full Load Capacity Alternator | Protective Thermal Switch
  • Frequency Regulation (Steady State): ±0.25% | Heat Rejection to Coolant: 682,058 BTU/hr (200 kW)
  • Fan: 2,538 RPM | Piston: 1,593 ft/min (486 m3/min)
  • Maximum Operating Ambient Temperature: 120 °F (50 °C) | Maximum Operating Ambient Temperature (Before Derate): See Bulletin No. 0199280SSD | Exhaust Temperature (Rated Output): 1,000 °F (538 °C)
  • Oil: Gear | Water: Pre-Lubed, Self Sealing | Fuel Inject Make: Electronic | Fuel: Engine Driven Gear
  • Type: Full-Flow Cartridge
  • Total Fuel Pump Flow (Combustion + Return): 26 gph (98 Lph) | Coolant Flow: 63.3 gpm (240.0 Lpm) | Exhaust Flow (Rated Output): 1,550 cfm (43.9 m3/min)
  • Inlet Air: 8,872 cfm (251 m3/hr) | Flow at Rated Power: 720 scfm (20.4 m3/min)
  • Maximum Additional Radiator Backpressure: 0.5 in H2O (0.12 kPa) | BMEP: 336 psi (2,289 kPa) | Maximum Allowable Backpressure: 1.5 inHg (5.1 kPa)
  • Fan Diameter: 30 in (762 mm) | Fuel Supply Line: 0.5 in (12.7 mm) NPT | Fuel Return Line: 0.5 in (12.7 mm) NPT | Fuel Pump Lift : 3 ft (1 m)
  • Crankcase: 29.6 qt (28.0 L)
  • Coolant Capacity: 12.7 gal (49.2 L)
  • Cylinder Head: 4–Valve | Fan Type: Pusher | Oil Drain Extension | Heavy Duty Air Cleaner | Level 1 Fan and Belt Guards (Open Set Only) | Factory Filled Oil and Coolant | Radiator Duct Adapter (Open Set Only) | Critical Silencer | 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 | Standard Factory Testing | Silencer Mounted in the Discharge Hood (Enclosed Units Only)
  • Piston Type: Aluminum | Crankshaft Type: Forged Steel | Stainless Steel Flexible Exhaust Connection | Rubber-Booted Engine Electrical Connections
  • 2 Year Extended Limited Warranty (Standby Rated Units) | 1 Year Extended Limited Warranty (Prime Rated Units)