Kohler Power 48,000 Watt (48kW) 120/240-Volt Single-Phase Liquid Cooled Dual-Fuel Standby Generator

The Kohler 48RCLC is a rugged and high-performing 48kW single-phase standby generator, purpose-built for large residential estates and light commercial applications that demand clean, reliable backup power. With a 6.2L V8 engine, brushless alternator, and smart digital controller, this generator delivers exceptional voltage regulation, quiet operation, and field-proven reliability.

At the core of the 48RCLC is the Kohler KG6208 6.2L liquid-cooled engine, operating at 1800 RPM for long-lasting performance and enhanced fuel efficiency. Its electronic engine management system provides smooth power delivery on both natural gas and liquid propane, and the unit supports field conversion between fuels without compromising emissions certifications.

The generator's Fast-Response® X excitation system, powered by a rare-earth permanent magnet alternator, provides outstanding voltage response and ±1% digital voltage regulation, while maintaining less than 4% total harmonic distortion (THD). This ensures a stable power output, safe for computers, automation systems, and other sensitive electronics.

All system controls are managed by the RDC2 digital controller, which offers a backlit two-line LCD, programmable exercise modes, and remote diagnostics via OnCue® Plus compatibility. It also features over 70 diagnostic messages, onboard maintenance reminders, and real-time tracking of voltage, frequency, runtime hours, engine temperature, and more.

Kohler also prioritized sound control-this model operates at 62 dB(A) during exercise and 63 dB(A) during full load operation. The aluminum sound-attenuated enclosure, with an internal critical silencer and corrosion-resistant powder-baked finish, is wind-rated up to 181 mph, meeting NFPA 37 installation clearance standards with just 18 inches from a building.

Fuel efficiency is strong for this size class, with full-load fuel use rated at 875 cfh of natural gas or 329 cfh of propane. Additional highlights include a sealed brushless alternator, integral vibration isolation, and circuit breaker protection. The generator is UL 2200 listed, CSA certified, EPA-compliant, and approved for use in California and Massachusetts.

Key Features:

• 48kW Single-Phase Power Output – Serves large homes and small businesses with full-building backup
• 6.2L Kohler V8 Engine – Turbocharged and naturally aspirated, built for long-term generator use
• Fast-Response® Excitation System – Delivers sharp voltage recovery and short-circuit capacity
• ±1% Voltage Regulation / <4% THD – Protects sensitive devices and complex electronics
• RDC2 Digital Controller – Two-line LCD, system alerts, programmable scheduling, and OnCue® Plus compatibility
• Quiet Operation – Only 62 dB(A) during exercise and 63 dB(A) at full load
• Aluminum Enclosure with Critical Silencer – Corrosion-resistant and wind-rated to 181 mph
• Fuel Efficient – Uses 875 cfh (NG) or 329 cfh (LP) at full load
• Field-Convertible Fuel Setup – Easily switch between NG and LP
• Certified for Safety & Emissions – UL, CSA, EPA, NFPA 37, and Massachusetts Board-approved

The Kohler 48RCLC is a robust, low-maintenance generator built to deliver dependable power and peace of mind, even in the harshest conditions. Perfect for those who require serious performance with smart monitoring and minimal noise.

Overview:

• Product Category: Home Standby Generator
• Generator Features: Low Oil Alert/Shutdown
• Product Weight: 1690 lbs
• Length: 89-13/16"
• Width: 32-7/8"
• Height: 46-1/2"

Specifications:

• Voltage: 120, 240V
• Frequency: 60 Hz
• Running Wattage: 48,000 Watts
• Fuel Type: Liquid Propane, Natural Gas
• NG Power Capacity: 48,000 Watts
• LP Power Capacity: 48,000 Watts
• NG Fuel Consumption @ 50% Load: 512 ft3/hr
• NG Fuel Consumption @ 100% Load: 875 ft3/hr
• LP Fuel Consumption @ 50% Load: 5 gallons/hr
• LP Fuel Consumption @ 100% Load: 9 gallons/hr
• Amperage: 200A
• Decibel Rating @ 7m: 63 dB
• Enclosure Material: Aluminum
• Mounting Pad: Concrete (Not Included)
• Cooling Type: Liquid Cooled

Engine:

• Engine Brand: Kohler
• Starting System: 12v Auto Start
• Cubic Capacity: 6200 CC
• Horsepower: 86 (NG) / 103 (LP)
• RPM: 1800 RPM
• Low Oil Alert/Shutdown: Yes

Product Assurance:

• EPA Compliant
• Approved for commercial use
• Warranty: 5 Year Commercial Engine and 5 Year Residential Engine