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Sleipner SAC450 AC Marine Thruster - 450kg Thrust 386mm Tunnel 208-240V 3-Phase Continuous Heavy-Duty Bow Thruster
Engineered for ultimate vessel control, the Sleipner SAC450 AC Thruster delivers 990 lbs of continuous, unlimited-runtime thrust with S-Link proportional control for effortless docking performance.
Reference: SAC450/386-C-2V
Regular Price:
$29,925.00
Boat Show Special:
$28,428.75
Boat Show Special 5% OFF Sitewide
Available for local pickup at our Miami or Fort Lauderdale location
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Sleipner SAC450 AC Thruster: Advanced Proportional Control & S-Link Integration
Real-World Marine ValueNavigating tight marinas, strong currents, and heavy crosswinds requires complete confidence at the helm. The Sleipner SAC450 AC Marine Thruster System delivers an astounding 450 kg (990 lbs) of continuous thrust, ensuring effortlessly precise docking assistance for everything from large center consoles to luxury motor yachts and commercial vessels. Driven by AC power and controlled via variable frequency drive (VFD) technology, the SAC450 offers unlimited continuous run-time without thermal shutdown risk, giving captains total peace of mind during extended low-speed maneuvers and heavy docking scenarios.
Key Operational Features
- S-Link Digital Bus Cabling Integration: Seamlessly integrates into Sleipner’s S-Link CAN bus architecture, offering plug-and-play network connectivity for smooth digital communication, quick system setup, and responsive multi-station control.
- Power & Mounting Flexibility: Available in both 208–240 VAC and 380–440 VAC 3-phase electrical configurations to fit diverse marine AC generator networks. Supports both vertical and horizontal vessel mounting configurations to accommodate varied hull profiles and bow space limitations.
- Proportional Control & Smooth Docking Assistance: The included PDC 301 Proportional Controller paired with an advanced VFD provides smooth, linear acceleration and infinite thrust control. A built-in safety momentary delay during direction changes eliminates impact loading on gears for ultra-smooth shifts and enhanced drivetrain longevity.
- Advanced Multi-Thruster & System Scalability: Part of a fully expandable Sleipner marine network, allowing synchronized bow and stern thruster operations integrated alongside digital controls and joystick vessel maneuvering systems.
- Commercial-Grade Hydrodynamics & Durability: Features twin counter-rotating 4-blade composite Kaplan propellers housed in a 386mm (15”) tunnel. The streamlined gear-leg is CNC-machined from seawater-resistant bronze, oil-filled with an external header tank and venting, and fitted with hardened spiro-conical gears and marine-grade lip seals for long-term underwater reliability.
Technical Specifications Breakdown
| Specification | Details / Parameters |
| Model Series | Sleipner SAC450 / SAC450/386-C-4H |
| Thrust Output | 450 kg (990 lbs) Continuous Thrust |
| Tunnel Inner Diameter (ID) | 386 mm (15 inches) |
| Input Power Options | 208–240 VAC 3-Phase / 380–440 VAC 3-Phase |
| Mounting Orientations | Vertical Mount / Horizontal Mount |
| Propeller Type | Twin Counter-Rotating 4-Blade Composite Kaplan Props |
| Control Architecture | S-Link Plug-and-Play Digital Bus System |
| Speed / Thrust Control | Full Proportional Control via Variable Frequency Drive (VFD) |
| Gear Leg Construction | CNC-Machined Seawater-Resistant Bronze (Oil-Filled with Header Tank) |
| Gearing & Bearings | Precision Hardened Spiro-Conical Gears; Double Ball Bearings on Prop Shafts |
| Anode Protection | Direct-Mounted Propeller Anodes for Rapid Replacement |
| Included Components | VFD Drive, EMC Filter, and PDC 301 Proportional Controller |