2025 Generac Mobile Stationary Generators MD400

Information

2025 Generac Mobile Stationary Generators MD400

Generac offers a wide variety of options, configurations and arrangements, allowing us to meet the power needs of practically every industry and application. Our generators are strong and dependable, meeting UL, NFPA, NEC, ISO and NEMA standards.

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.
GENERATOR PARALLELING
  • Generac's Modular Power Systems (MPS) boast a rate of up to 99.999% reliability, and are more cost-effective and flexible than single generators with the same load capacity.

Photos

Highlights

  • Edmonton, Alberta
  • 2025
  • Generac Mobile
  • Stationary Generators MD400
  • Ultra Low Sulfur Diesel #2 | Specifications: ASTM
  • Available

Specifications

  • 2025
  • Generac Mobile
  • Stationary Generators
  • MD400
  • General
  • Perkins
  • EPA Emissions Compliance: Stationary Emergency | EPA Emissions Reference: See Emissions Data Sheet
  • 6
  • In-Line | Pre-Combustion
  • 12.5 in3 (762.80 L)
  • 130 in (5.12 mm)
  • 157 in (6.18 mm)
  • 16.3:1
  • Air Method: Turbocharged/Aftercooled
  • Electronic Isochronous
  • Closed Recovery | Closed Coolant Recovery System | UV/Ozone resistant hoses | Factory-Installed Radiator | 50/50 Ethylene glycol antifreeze
  • Horsepower at Rated kW: 578 hp | Three-Phase 277/480 VAC @0.8pf: 400 kW / 602 Amps | Three-Phase 346/600 VAC @0.8pf: 400 kW / 481 Amps
  • 1800 RPM
  • Fuel Filtering (microns): Primary 10 - Secondary 2 | Flexible Fuel Lines | Primary and Secondary Fuel Filters
  • Ultra Low Sulfur Diesel #2 | Specifications: ASTM
  • Injection: Electronic | Type: MEUI
  • 25%: 9.8 gal/hrt (37.1 l/hr) | 50%: 15.7 gal/hr (63.2 l/hr) | 75%: 23.1 gal/hr (87.4 l/hr) | 100%: 27.8 gal/hr (27.8 l/hr)
  • Size: See Battery Index 0161970SBY | Group: 8D | Voltage: (2) - 12 VDC
  • Alternator: Std
  • Coolant Heater Standard Wattage: 1800 Watts | Coolant Heater Standard Voltage: 120 V | System Voltage: 24 VDC | Ground Polarity: Negative
  • Standard Model: 520 mm Generac | 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 | Bearings: Single Sealed Cartridge | Coupling: Direct, Flexible Disc | Load Capacity - Standby: 100% | Voltage Regulator Type: Digital | Number of Sensed Phases: 3 | Regulation Accuracy (Steady State): ±0.25% | Class H insulation material | 2/3 Pitch | Skewed Stator | Permanent Magnet Excitation | Sealed Bearings | Amortisseur winding | Full load capacity alternator
  • Frequency Regulation (Steady State): +/- 0.25% | Heat Rejection to Coolant: 1,067,520 BTU/hr
  • Fan: 1656 RPM | Piston: 1854 ft/min
  • Max. Operating Radiator Air Temp: 122 °F (50 °C) | Exhaust Temp (Rated Output - post silencer): 1256 °F (680 °C)
  • Oil: Gear | Water: Pre-Lubed, Self Sealing | Fuel : Engine Driven Gear
  • Type: Full-Flow
  • Total Fuel Pump Flow (Combustion + Return): 159 gal/h (600 l/hr) | Coolant Flow per Minute gal/min (l/min) 106.2 gal/min (402 l/min)
  • Inlet Air: 18,685 cfm (529.1 m3/min) | Flow at Rated Power: 1180 cfm (33.41 m3/min) | Exhaust Flow (Rated Output): 3044 cfm (86.2 m3/min)
  • Maximum Additional Radiator Backpressure: 0.5 in H2O | BMEP: 369 psi | Max. Backpressure (Post Silencer): 1.5 inHg (5.1 kPa)
  • Fan Diameter: 927 mm (36.5 in) | Fuel Supply Line: 12.7 mm (1/2” NPT) | Fuel Return Line: 12.7 mm (1/2” NPT) | Fuel Pump Lift: 12 ft (3.7 m) | Exhaust Outlet Size (Open Set). 127 mm(5.0 in)
  • Crankcase: 38 L (40.15 qts)
  • Coolant System Capacity: 13 gal (49.2 L)
  • Cylinder Head Type: 4 - Valve | Fan Type: Pusher | Oil Drain Extension | Air Cleaner | Fan Guard | Critical Exhaust Silencer (Enclosed Only) | Factory Filled Oil | Engine Block Heater | 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 (enclosed only) | Standard Factory Testing | Silencer mounted in the discharge hood (enclosed only)
  • Piston Type: Aluminium | Crankshaft Type: Drop Forged Steel | Stainless Steel flexible exhaust connection | Rubber-booted engine electrical connections
  • 2 Year Limited Warranty (Standby rated Units)