SAC520 tunnel thruster Ø386mm 400V
SAC520 tunnel thruster Ø386mm 400V - Image 2

SAC520 tunnel thruster Ø386mm 400V

Call 954-577-2850 or Send Enquiry for Pricing

SAC520 is a reliable thruster with 520 kg of thrust. It can be mounted as a bow or stern thruster and run continuously without downtime.

The unit is designed for vertical mounting and is suitable for boats between 85-140 feet/ 25-40 meters.

An ideal choice for heavy use, such as in commercial or industrial environments where the boat is often in constant operation.

A remote control is a popular accessory. See some of the important product and safety features below.

SKU: SAC520/386-C-4-V Categories: ,

Product Description

Ready to install

AC thrusters are delivered as a complete ready-to-install kit, with all necessary components for easy connection to Sleipner’s S‑Link™ control system:

  • PDC-301 Drive Controller
  • Variable Frequency Drive (VFD)
  • Gearleg with propellers and bracket
  • Flexible coupling
  • AC motor
  • EMC Filter

Each thruster is configured specifically for the vessel. No further setup or settings of the VFD (Variable Frequency Drive) are required.

System overview

AC components.png

S-Link™

The innovative S-Link™ control system ensures a quick and trouble-free installation. The system also monitors the operating condition of the thruster and provides continuous feedback to the operator.

S-Link™ also offers the advantage of combining AC thrusters and hydraulic thrusters, all connected to a single common control cable and with the possibility of variable speed control of the thrusters.

The AC thrusters are designed based on many years of volume production of our other thruster series, which has resulted in a series of cost-effective products with high quality. All AC components are supplied by branded manufacturers to ensure quality, high operational reliability, and easy access to spare parts worldwide.

The standard range is designed for 230V or 400V systems but can also be supplied for other specifications on request.

Low Harmonic VFDs

In addition to standard frequency drives, we can supply systems with “Low Harmonic VFD” for installations with specific requirements for THD (Total Harmonic Distortion).

A system with a standard VFD will create a certain level of distortion to the AC network. A system’s actual THD (Total Harmonic Distortion) will vary depending on other loads, available generator capacity, total generator capacity, etc.

Sleipner systems with a low harmonic VFD will reduce the harmonic distortion to less than 5%, which will give the following advantages:

  • Keep the electrical network clean
  • Reduce the risk of disturbance
  • Prevent damage to other equipment
  • Prevent interference with communications equipment
  • Reduced need for oversizing of the generators

PDC-301 Drive Controller

Sleipner PDC 301 SAC thruster drive controller
  • Communication with VFD by Modbus connection
  • Included 3-wire cable for connection to VFD Modbus terminals
  • Improved monitoring and diagnostics simplifies commissioning and troubleshooting by real time data logging and readout of historical faults.
  • Firmware upgrade through S-Link™
S-LINK™

S-Link™ is a CAN-based control system used for communication between Sleipner products installed on a vessel.

Compact and waterproof plugs

Keyed and color-coded connectors to ensure correct and easy installation

Different cable lengths, extenders and T-connectors makes the system scalable and flexible to install

Q-PROP™

The Q-PROP™ has measured noise reductions of up to 75% in controlled environments. The five-bladed skew propeller reduces noise levels while maintaining exceptional efficiency. Some thruster models even see an increase in thrust power.

The expected noise reduction in average installations: 20-40%

Upgrade kits are available for most Sleipner thruster models with special adaptors

PRO™

A PRO™ thruster system enables you to apply only the necessary power to complete your maneuver. The variable speed control eliminates the noise associated with standard on/off thrusters.

The system also includes a practical hold-function. In a dual system (bow and stern) a single press of a button will keep you alongside the docks – making docking truly a one-person job.

Speed controlled thrusters are the best choice for joystick interaction.​

HOLD-FUNCTION

Docking your vessel has never been easier. With a single press of a button, you can rely on your thrusters to maintain the boat controlled against the dock while stepping off to secure the lines — making docking truly a one-person job.

FLEXIBLE INSTALLATION

Sleipner offers installation flexibility to work with the space you have. Our thruster models allow installation at any angle on the tunnel, tailored to fit any space available in your vessel.

GRAVITY FEED LUBRICATION

The thruster gearleg is supplied with oil from a separate reservoir above the waterline to monitor oil levels.

FLEXIBLE COUPLING

Flexible coupling protects the product’s driveline by compensating for minor misalignments between the shafts of the thruster motor and gearleg.

TWIN COUNTER-ROTATING PROPELLERS

Two counter-rotating propellers offer the most thrust at a good performance ratio in a minimal tunnel diameter. This system is used in our larger thrusters for maximum power. Our twin-counter thruster range is the favorite among leading boatbuilders in high-end yachts.

Category Specification Value
Main Power Power supply 400V AC (3-phase)
Supply voltage range 380-440V
Power output 35kW / 46hp
Performance Continuous thrust 520kg / 1146lbs
Features Key Technologies Q-Propeller, Twin Counter Rotating Propellers, Gravity Feed Lubrication, Variable Speed Control, S-Link, Flexible Coupling, Hold Thrust, Flexible Installation, Industry-leading efficiency
Dimensions (H) Height 999mm / 39in
(L) Length 439mm / 17in
(W) Width 356mm / 14in
(ID) Internal Diameter 386mm / 15in
(WD min.) Min. Water Depth 580mm / 22in
(TL min.) Min. Tunnel Length 500mm / 19in
(TL) Recommended Tunnel Length 750mm / 29in
(T min.) Min. Tunnel Wall Thickness 10mm / 0in
(T max.) Max. Tunnel Wall Thickness 15mm / 0in
Installation & Integration Capability (Bow / Stern / Tunnel) Yes / Yes / Yes
Typical class / size Commercial, Motor/Sail boat / 25-40m / 82-131ft
What is the S-link control system?

S-link is a Sleipner CAN BUS based control system with full intelligent communication between all devices within the system, much like a computer network. It is used for all retract thrusters and Pro thrusters with a DC control system.

Main advantages include:

• Round, compact and waterproof plugs with unique keying and color coding to avoid faulty hookups.

• An unlimited number of commands or information transfer on a single cable.

• It has user feedback to panel

• Intelligent troubleshooting

Related products