Generac Protector Series 48,000 Watt (48kW) Single-Phase Liquid Cooled Diesel Standby Generator 120/240 Volts with Extended Run Tank

The Generac RD04834 is a robust, high-capacity 48kW diesel-powered standby generator from the acclaimed Protector™ Series, purpose-built for residential estates and light commercial applications requiring serious, code-compliant backup power. Designed to deliver consistent performance, long run times, and simplified serviceability, this model provides a durable and intelligent diesel solution for critical power needs.

Powered by an inline 4-cylinder liquid-cooled diesel engine running at 1800 RPM, the RD04834 is optimized for long-term, fuel-efficient operation. The engine and alternator are tuned to deliver smooth output across both single-phase (120/240V) and three-phase (120/208V, 120/240V, 277/480V) configurations, providing flexible installation options for a variety of sites.

The generator is equipped with Generac’s intuitive Evolution™ Controller, featuring a multilingual two-line LCD display with backlit, color-coded buttons for easy on-site operation. The unit also supports Mobile Link™ remote monitoring (sold separately), allowing users to track generator performance and status in real time via smart devices.

The RD04834’s Quiet-Test™ mode allows the generator to perform weekly self-tests at a lower RPM, reducing both fuel consumption and operational sound. It operates at 65 dB(A) during exercise mode and 70 dB(A) at full load, making it appropriate for use in residential areas and quiet commercial zones.

Fuel economy is a standout feature, consuming approximately 2.3 gallons per hour at half load and 4.3 gallons per hour at full load, with long runtimes supported by the unit’s UL 142-listed double-walled base tank. The steel enclosure, finished in gray, offers both weather resistance and integrated fuel containment, ensuring code-compliant and safe installation in demanding environments.

Serviceability is built into the design with removable side doors, an external viewing window for quick breaker and status checks, and clean internal layouts that simplify maintenance routines. The unit is UL 2200 listed, EPA emissions certified, and supported by a 5-year limited warranty for long-term peace of mind.

Key Features:

• 48kW Diesel Standby Output – Ideal for estates, farms, retail buildings, or light commercial facilities
• 1800 RPM 4-Cylinder Diesel Engine – Liquid-cooled, optimized for longevity and continuous use
• Multi-Phase Capability – Supports 1-phase and 3-phase outputs: 120/240V, 208V, 480V
• Evolution™ Controller – Digital display with multilingual interface and smart maintenance tracking
• Mobile Link™ Compatible – Enables remote generator monitoring and alerts (sold separately)
• Quiet-Test™ Self-Testing – Operates at lower RPM to reduce sound and fuel use during weekly checks
• Low Operating Noise – Just 65 dB(A) during self-test and 70 dB(A) at full load
• Efficient Fuel Consumption – 2.3 gal/hr @ 50% load, 4.3 gal/hr @ 100% load
• UL 142 Double-Wall Base Fuel Tank – Integrated fuel containment and environmental protection
• Durable Steel Enclosure – Gray finish, corrosion-resistant, and weather-sealed
• Certified and Compliant – UL 2200 listed, EPA certified, and compliant for installation across North America

With its robust design, intelligent control system, and quiet, efficient diesel operation, the Generac RD04834 delivers powerful peace of mind for anyone requiring serious standby performance without compromise.

Overview:

• Product Category: Home Standby Generator
• Generator Features:
  • Automatic Voltage Regulation
  • Low Oil Alert/Shutdown
• Product Weight: 2492 lbs
• Length: 95"
• Width: 35"
• Height: 66"

Specifications:

• Voltage: 120, 240V
• Frequency: 60 Hz
• Running Wattage: 48,000 Watts
• Fuel Type: Diesel
• Amperage: 200A
• Decibel Rating @ 7m: 70 dbA
• Enclosure Material: Aluminum
• Mounting Pad: Concrete (Not Included)
• Cooling Type: Liquid Cooled
• Wi-Fi: Yes

Engine:

• Engine Brand: Mitsubishi
• Starting System: 12v Auto Start
• Cubic Capacity: 3300 CC
• Horsepower: 85 HP
• RPM: 1800 RPM
• Low Oil Alert/Shutdown: Yes

Product Assurance:

• Certifications: UL
• EPA Compliant
• Made in America
• Approved for Commercial Use
• Warranty: 5 Year Commercial, 5 Year Commercial Engine, 5 Year Residential, and 5 Year Residential Engine