Sleipner E120 PRO 48V Variable Speed Thruster (120kg Thrust / 215mm Tunnel)

Unmatched Runtime and Efficiency with 6-Phase PMSM Synchronous Motor Technology

Maneuvering a 44-to-64-foot vessel into tight marina slips, short-handed, or against challenging crosswinds demands proportional force and continuous control. The Sleipner E120 PRO 48V E-Series Thruster delivers an impressive 120kg of thrust within a compact 215mm (8.46") inside-diameter tunnel, establishing a new benchmark in DC thruster efficiency, quietness, and operational endurance.   

At the heart of the E120 is Sleipner’s state-of-the-art 6-phase PMSM (Permanent Magnet Synchronous Motor) coupled with an integrated inverter. This advanced 48V brushless architecture delivers whisper-quiet output and extended runtime without the thermal limitations of standard DC motors. Combined with the five-bladed skew Q-PROP™ twin propellers, noise levels are reduced by up to 75% in controlled environments (20-40% in standard marine installations) while delivering maximum hydrodynamic thrust.   

Key Operational Features

• Proportional PRO™ Control & Hold-Function: Variable speed control allows captains to apply exact power increments instead of harsh on/off thrust bursts. The intuitive hold-function lets single-handed or shorthanded crews lock the boat continuously against the pier or dock piling while step-off mooring lines are secured.   
• Integrated Inverter & 48V Power Flexibility: Direct 48V DC power with built-in motor control simplifies installation while providing voltage regulation. Integrated thermal management derates power rather than shutting down suddenly, providing extended runtime during critical maneuvers.   
• S-Link™ CAN-Bus Multi-Network Scalability: S-Link™ CAN-bus architecture utilizes compact, waterproof, color-coded connectors for plug-and-play installation. It enables multi-station joystick control, seamless dual bow/stern network communication, intelligent diagnostic feedback, and easy chartplotter/joystick ecosystem integration.   
• Flexible 360° Vessel Mounting: Designed for tight bilge spaces and bow/stern configurations, the drive assembly can be installed at any angle around the tunnel axis to fit any hull geometry.   Superior Drive-Line Protection & Sealed Maintenance: Features a flexible drive coupling to protect the drivetrain from shaft misalignment, galvanic separation to eliminate stray current corrosion, and lifetime-lubricated ceramic/carbon mechanical gearleg seals against water intrusion.   
• ISO 8846 Ignition Protection: Fully compliant with ISO 8846 standards, making the unit safe for installation in compartments where gasoline fumes or flammable vapors may be present.