Discover our marine 48 kVA generator

48 kVA Generator

Where to buy
M SQ Pro 50 Front Side
Website Header Marine
Perfect sinewave

Industrial power quality for a disturbance-free power provision

Fixed speed

48 kVA (40 kW), 400-230 VAC, 3 ph, 50 Hz (60 Hz)

Smallest and quietest in it’s class

Robust sound-shield & heavy insulation for optimal sound reduction - 58 dBA

Meet our fixed speed marine 48 kVA generator, designed to last a lifetime

The WhisperPower fixed speed 48 kVA generator is designed to run continuously at 1500 rpm in severe conditions. They are robust, quiet, compact and extremely reliable. Our fixed speed 48 kVA generator is manufactured in the Netherlands and tested for a three hour run time at one of the most advanced generator production facilities in the world before being distributed worldwide by dedicated, service oriented distribution partners.

Our marine fixed speed 48 kVA generator

Main Specifications marine 48 kVA generator

  • Intermittent Power kW at 25°C (77°F)
    40 kW
  • Continuous Power kVA at 25°C (77°F)
    48 kVA
  • Nominal voltage / frequency
    400-230 VAC, 3 ph, 50 Hz (60 Hz)
  • Rpm range
    1500 rpm
  • Engine
    Perkins-Sabre 4.4 GM - 4 cylinder
  • Noise level
    58 dB
  • Length x width x height, mm (in.)
    1658 x 837 x 986 (65.3 x 33 x 38.8)
  • Dry weight (cabinet + PMG), kg (lb.)
    1000 (2205)
M SQ Pro 50 Right Open
M SQ Pro 50 Right Open1

Optional installation parts

Spare parts

M SQ Pro 50 Front Open1
M SQ Pro 50 Front Open2

Optimal Sound reduction

Our 48 kVA generator comes standard with a robust sound-shield, with corrosion-resistant metal coating and heavy insulation material for optimum sound reduction. The soundproof design allows easy access to all sides of the generator and provides access to all maintenance-related components from one-side.

Units can also be delivered without a sound-shield. Ask for our open units with or without sound-shield.

Deep Sea Control

Deep Sea Control

  • Genset parallel functionality included (ask for more details)
  • Provides secure and simple off site monitoring (optional)
  • Enables fault conditions to be resolved quickly and provides instant system information to aid preventative maintenance
  • Graphical displays showing, charts, meters, power display, graphs and engine status information
  • Information is displayed clearly and in a universal format for all users 
  • Language by choice

Pure power, excellent service & adequate parts supply

Our 48 kVA generator is build to automatically run air-conditioning/ heating systems, heavy-duty tools, compressors, kitchen galleys, lights, refrigeration and cooling systems, computers and more. All simultaneously, depending on the load.

The purchase of a 48 kVA generator comes with a dedicated WhisperPowerWarranty Term. The standard warranty term is 2,000 hours of running time. The ever growing global network of distributors and dealers take care of technical support and service. Spare parts can be ordered from them or through

Navy Banner

48 kVA / 40 kW

Fixed speed

400-230 VAC, 3 ph, 50 Hz (60 Hz)

Output Voltage

1658 x 837 x 986 mm, 1000 kg

65.3 x 33 x 38.8 in., 2205 lb.


24/7 Monitoring with WhisperCare

Our fixed speed 48 kVA generator can be monitored 24/7 in real-time remotely via the optional WhisperCare Wi-Fi router package. This is based on a combination of 4G/5G internet connection and WhisperTouch 7″ or 10″ monitor screen.

With WhisperCare, all important parameters can be read remotely using a mobile phone, tablet or computer. Plus, full Wi-Fi is now available for computers, TVs, and other enabled devices. The WhisperPower systems can also be connected to a variety of digital switching systems, each seamlessly integrated with Naviop, Yachtcontrol, Garmin, Trigentic, EmpirBus and more.

M SQ Pro 50 Left Open
M SQ Pro 50 Left Open1

Advanced total system

  • 1500 rpm, 3 phase, 230 V / 50 Hz
  • Manufactured in Holland, Highest quality standards
  • Robust AVR voltage regulation
  • Electronic governor for best power quality
  • Air-cooled, marine grade back-end
  • Indirect water cooling principle
  • All connections are pre-mounted (cooling, exhaust, electrical)
  • Parallel connection optional
  • Ungrounded versions available
  • Open versions, units without sound shields, available
Extremely Silent

The most silent generator in the market

Optimal sound reduction

Robust sound-shield, corrosion proof metal plating

Perfect sinewave

Industrial power quality for a disturbance-free power provision

One-sided service

Access to all maintenance related components from one side

One stop-shop

All parts from one address

24/7 monitoring

With WhisperCare, all important parameters can be read from a distance via a cell phone, tablet or computer