Nanni Generator Type Q3300 – 23CM50

Description

New Nanni Generator Type Q3300 – 23CM50 Marine Generator For Sale

Reliable 23.3 kW Single-Phase Marine Power for Yachts and Professional Vessels

The New Nanni Generator Type Q3300 – 23CM50 Marine Generator is a powerful and dependable marine diesel generator designed to provide stable onboard electricity for motor yachts, sailing yachts, expedition vessels, catamarans, workboats, and professional marine applications. Built around a proven Kubota diesel engine and paired with a high-quality Mecc Alte alternator, the Q3300 – 23CM50 combines substantial electrical capacity, low-speed operation, compact marine engineering, and reliable long-term performance.

Designed for vessels using a 230V single-phase electrical system, the Q3300 – 23CM50 delivers 22.2 kW of prime running power and up to 23.3 kW of limited-time power at 50 Hz. This output provides sufficient capacity for vessels operating multiple electrical systems, including marine air conditioning, refrigeration equipment, battery chargers, water makers, pumps, navigation electronics, communication equipment, galley appliances, lighting, entertainment systems, and other essential onboard loads.

Choosing the correct marine generator involves more than matching a vessel with a maximum kilowatt rating. Vessel owners, boat builders, shipyards, and marine operators should also consider continuous electrical demand, motor and compressor startup loads, operating hours, available machinery space, ventilation, cooling requirements, exhaust routing, and future electrical upgrades.

For customers seeking a capable marine genset with strong single-phase output and proven diesel technology, the Nanni Q3300 – 23CM50 provides a practical onboard power solution for recreational and professional vessels.

Marine Engineering Behind the Nanni Q3300 – 23CM50

The Nanni Q3300 series is developed specifically for marine power generation. Unlike a conventional industrial generator adapted for installation aboard a vessel, the Q3300 incorporates cooling, exhaust, electrical-control, and protection systems designed around the demands of marine operation.

The generator uses a robust four-cylinder, inline, four-stroke Kubota diesel engine with a displacement of approximately 3.318 litres. Its cast-iron engine block, indirect mechanical fuel injection, automatic preheating system, and electronic speed regulator are designed to provide dependable starting, consistent operating speed, and durable performance.

The Nanni Q3300 marine generator is engineered to operate reliably in environments affected by vibration, humidity, saltwater exposure, restricted ventilation, and extended operating periods. Its low-speed configuration also helps reduce mechanical stress while supporting stable electrical frequency.

Customers evaluating the Nanni Generator Type Q3300 – 23CM50 price should consider the complete value of the generator, including its electrical capacity, marine engineering, fuel efficiency, service accessibility, installation configuration, operating durability, and compatibility with the vessel’s onboard electrical system.

Efficient Kubota Diesel Performance

The Q3300 – 23CM50 uses a naturally aspirated Kubota diesel engine designed to provide consistent power under changing electrical loads. Kubota engine platforms are widely used in marine, industrial, agricultural, and power-generation applications because of their durability, efficient performance, and established service support.

The engine operates at 1500 RPM in its 50 Hz configuration. This lower operating speed helps reduce vibration, mechanical wear, friction, and operating noise compared with many higher-speed generator systems. It also supports stable 50 Hz electrical production through the generator’s four-pole alternator.

The Q3300 – 23CM50 is designed to provide:

• Dependable electricity for essential vessel systems
• Efficient operation under sustained electrical demand
• Stable engine speed through electronic regulation
• Reduced vibration and mechanical wear
• Practical access for routine servicing
• Reliable auxiliary power away from shore facilities

A correctly sized diesel marine generator allows yacht owners and professional operators to maintain important onboard services while cruising, remaining at anchor, or operating offshore without depending on marina electricity.

It can also reduce the need to operate the vessel’s propulsion engines solely for battery charging or auxiliary electrical power.

Prime and Limited-Time Power Ratings

Understanding generator power ratings is important when selecting an auxiliary marine power system.

The Nanni Q3300 – 23CM50 provides:

• 22.2 kW prime running power
• 23.3 kW limited-time power
• 230V single-phase output
• 50 Hz electrical frequency
• Approximately 96.5 amps

The prime rating is the more relevant figure when evaluating sustained onboard electrical demand. The limited-time rating provides additional capacity for shorter operating periods and should not be treated as the generator’s normal continuous output.

A vessel’s calculated operating load should normally remain below the prime rating, leaving appropriate reserve capacity for temporary demand increases and equipment startup loads.

Air-conditioning compressors, refrigeration systems, electric motors, pumps, and water makers may require substantially more power during startup than during normal operation. These temporary loads should be included when determining whether the Q3300 – 23CM50 is correctly sized for the vessel.

Selecting a generator that is too small may result in overload, voltage instability, excessive heat, and reduced equipment life. However, choosing a generator that is significantly larger than required may lead to extended operation under very light loads. A professional electrical-load assessment helps balance capacity, efficiency, and operating reserve.

Stable 230V Single-Phase Electrical Output

The Nanni Q3300 – 23CM50 is designed for vessels using 230V single-phase marine power. Its electrical configuration makes it suitable for yachts and professional craft with substantial domestic, comfort, navigation, and auxiliary electrical requirements.

The generator uses a Mecc Alte four-pole alternator with Class H insulation, IP23 protection, and voltage regulation specified at approximately ±1%. These features support stable electrical output for compatible onboard equipment.

The generator may support systems such as:

• Marine air-conditioning equipment
• Navigation and vessel-monitoring electronics
• Refrigeration and freezer systems
• Battery chargers and inverter chargers
• Water-making equipment
• Freshwater and seawater pumps
• Galley appliances
• Lighting systems
• Communication equipment
• Entertainment systems

Modern vessels rely heavily on dependable electricity for navigation, communication, safety, comfort, and daily operation. Stable engine speed and voltage regulation help maintain consistent power as connected electrical demand changes.

Before installation, a qualified marine electrician should verify cable sizes, circuit protection, grounding arrangements, load distribution, and compatibility with the vessel’s electrical system.

Fuel Consumption Across Different Generator Loads

Generator fuel consumption varies according to the electrical load placed on the engine. The Q3300 – 23CM50 is designed to provide efficient diesel operation across a range of onboard power demands.

Published Q3300 data lists approximate fuel consumption at:

These values provide a useful reference for operating-cost estimates. Actual fuel consumption may vary according to electrical demand, engine condition, maintenance, ambient temperature, fuel quality, installation, and operating environment.

Operating the generator within an appropriate load range supports efficient performance. Prolonged operation under extremely light loads should be avoided where possible because diesel engines generally perform best when regularly operated under a meaningful working load.

Advanced SI-2 Digital Generator Control

The Q3300 series is equipped with Nanni’s SI-2 digital control panel, designed to simplify generator operation, monitoring, and diagnostics.

The control system provides:

• Generator start and stop controls
• Engine-parameter monitoring
• Generator-parameter monitoring
• Operating-status information
• Alerts and diagnostic fault codes
• Operating-history records
• Multilingual display capability
• Remote monitoring and display options

The SI-2 system supports both standby and prime-power applications. It includes configurable protections, true RMS electrical measurement, a real-time clock with battery backup, RS485 communication, and operating-history storage.

These monitoring functions help operators identify abnormal conditions and respond before minor issues develop into more serious operational problems.

The digital control panel does not replace routine inspection and preventive maintenance, but it provides valuable information for everyday operation and troubleshooting.

Marine Cooling for Sustained Operation

Effective cooling is essential for dependable marine generator performance. Unlike land-based generators operating in open surroundings, onboard units are normally installed inside enclosed machinery compartments where heat must be removed efficiently.

The Q3300 uses a marine cooling arrangement with a belt-driven centrifugal coolant pump, a freshwater-cooled exhaust manifold, and a bronze seawater pump fitted with a neoprene impeller. Published data lists seawater flow at approximately 72 litres per minute for the 50 Hz configuration.

The marine generator cooling system supports:

• Stable engine operating temperature
• Efficient heat transfer
• Reliable operation under sustained loads
• Protection of internal engine components
• Reduced thermal stress
• Longer generator service life

Routine inspection should include coolant condition, raw-water strainers, seawater flow, hoses, clamps, belts, impellers, heat-exchanger surfaces, and wet-exhaust components.

Restricted seawater flow, a damaged impeller, blocked cooling passages, or inadequate machinery-space ventilation can cause overheating even when the generator is correctly sized.

Compact Marine Design and Installation Flexibility

Although the Q3300 – 23CM50 provides more than 22 kW of prime electrical power, it remains packaged for practical marine installation.

The official Q3300 technical documentation lists approximate dimensions of:

The current Nanni product page lists the soundshield model at approximately 1310 × 710 × 830 mm and 652 kg. Because dimensions and weight may vary according to production revision or selected configuration, the approved technical drawing and final quotation should be checked before installation.

The Nanni Q3300 – 23CM50 generator set may be suitable for:

• New motor-yacht construction
• Sailing yacht installations
• Expedition-vessel power systems
• Catamaran auxiliary-power systems
• Commercial vessel applications
• Yacht and vessel refits
• Marine generator replacement projects

When replacing an existing boat generator, matching only the electrical output is not sufficient. The installer should also verify mounting dimensions, service clearances, ventilation, seawater connections, exhaust routing, fuel supply, electrical cable access, and future generator-removal requirements.

Reduced Noise and Vibration for Onboard Comfort

Noise and vibration are important considerations aboard yachts, passenger vessels, and liveaboard boats. Excessive generator noise can affect onboard comfort, particularly during overnight anchoring or extended cruising.

The Q3300 – 23CM50 operates at 1500 RPM, supporting smoother low-speed performance and reduced mechanical wear. A soundshield configuration is available to help limit transmitted generator noise while maintaining practical access to important service areas.

A properly installed quiet marine generator should also include:

• Correctly selected flexible mounts
• Effective machinery-space ventilation
• Properly supported hoses and cables
• An engineered wet-exhaust system
• Suitable compartment insulation
• Adequate maintenance clearances

The enclosure alone does not determine the final onboard sound level. Hull construction, exhaust design, ventilation openings, mounting quality, and vibration transfer through the vessel structure can also influence acoustic performance.

Applications of the Nanni Q3300 – 23CM50

Motor Yachts

The generator can provide dependable electricity for air conditioning, refrigeration, battery charging, galley equipment, pumps, entertainment systems, lighting, and guest-comfort equipment.

Sailing Yachts and Catamarans

Larger sailing yachts and cruising catamarans can use the Q3300 – 23CM50 as an auxiliary marine power system for navigation electronics, water makers, refrigeration, communications, battery charging, and essential domestic loads.

Expedition and Long-Range Cruising Vessels

The generator’s 22.2 kW prime rating makes it suitable for vessels requiring dependable electricity during extended operation away from marina facilities.

Workboats and Professional Vessels

The Q3300 – 23CM50 can serve as a reliable commercial marine generator for pumps, refrigeration equipment, communication systems, lighting, workshop equipment, and auxiliary machinery.

Marine Refit Projects

The generator may be considered when replacing an ageing, inefficient, or unreliable marine genset, provided its electrical output, dimensions, cooling requirements, exhaust arrangement, and supporting systems are compatible with the vessel.

Technical Specifications of the Nanni Q3300 – 23CM50

The Q3300 – 23CM50 is officially rated at 23.3 kW limited-time power and 22.2 kW prime running power at 230V, 50 Hz, and 1500 RPM.

Standard Equipment and Available Options

The Nanni Q3300 – 23CM50 is supplied as an integrated marine diesel generator set designed for dependable onboard installation.

Standard equipment includes:

• Four-cylinder Kubota-based diesel engine
• Mecc Alte single-phase alternator
• SI-2 digital control panel
• 12V unipolar electrical system
• Marine heat exchanger
• Raw-water pump with neoprene impeller
• Marine wet-exhaust arrangement
• Automatic engine preheating
• Protection of essential operating parameters
• Operating and maintenance documentation

Available options may include:

• Soundshield enclosure
• Siphon breaker
• Fuel pre-filter
• Bipolar electrical system
• 24V electrical system
• Additional installation accessories

The exact equipment package should be confirmed before ordering because production configuration and installation requirements may vary.

Genuine Nanni Generator Supply and Worldwide Support

Customers looking for the New Nanni Generator Type Q3300 – 23CM50 Marine Generator for sale can contact our marine specialists for current availability, technical guidance, configuration options, and international delivery assistance.

We support customers with:

• Genuine Nanni generator supply
• Electrical-load and generator-sizing guidance
• Technical product recommendations
• Marine application support
• Replacement generator assessments
• Export documentation
• Worldwide shipping arrangements
• After-sales customer assistance

Nanni distributes its products through an international network covering approximately 90 countries and supported by hundreds of qualified partners.

Whether you are completing a yacht refit project, upgrading a professional vessel, or installing a new onboard power system, selecting the correct generator configuration can reduce installation problems and improve long-term reliability.

Frequently Asked Questions

What is the Nanni Q3300 – 23CM50 price?

The Nanni Generator Type Q3300 – 23CM50 price depends on the selected configuration, soundshield, optional equipment, current availability, shipping destination, and delivery requirements. Contact our team for an updated quotation.

How much continuous power does the Q3300 – 23CM50 provide?

The generator provides 22.2 kW of prime running power and up to 23.3 kW of limited-time power.

Is the Q3300 – 23CM50 a single-phase generator?

Yes. It is a 230V single-phase marine generator designed for 50 Hz onboard electrical systems.

Can the Q3300 – 23CM50 power marine air conditioning?

The generator may support compatible marine air-conditioning equipment when the vessel’s combined continuous demand and compressor-starting loads remain within its operating capacity. A complete electrical-load assessment is recommended.

Is the Q3300 – 23CM50 suitable for long-range yachts?

Yes. Its substantial prime-power rating, low-speed diesel operation, marine cooling system, and optional soundshield make it suitable for compatible long-range cruising vessels and larger yachts.

Can it replace an existing marine generator?

Yes. It may be suitable for a marine generator replacement when the vessel’s electrical demand, voltage, frequency, installation dimensions, cooling system, exhaust arrangement, and supporting systems are compatible.

Is a sound enclosure available?

Yes. The Q3300 – 23CM50 is available with a soundshield designed to reduce operating noise and improve onboard comfort.

Do you provide international shipping?

Yes. We support customers with international marine generator supply, export documentation, and worldwide shipping arrangements.

Request a Quote for the Nanni Q3300 – 23CM50 Marine Generator

The New Nanni Generator Type Q3300 – 23CM50 Marine Generator is a dependable choice for yacht owners, boat builders, shipyards, and professional operators seeking substantial single-phase marine power with proven Kubota diesel technology and stable onboard electrical performance.

Contact our marine generator specialists to request the latest Nanni Q3300 – 23CM50 price, confirm current availability, discuss your vessel’s electrical requirements, and receive assistance selecting the correct generator configuration.