PROPULSEUR RETRACTABLE ERL170 24 V 170 KG EVISION D 250 MM — Sleipner ERL170/250TC-24V

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Sleipner

ERL170/250TC-24V

Retractable thruster Sleipner ERL170 24 V, 170 kg

The Sleipner ERL170 24V retractable thruster delivers 170 kg of thrust with a 250 mm tunnel diameter, ideal for vessels from 15 to 22 meters. Equipped with a 6-phase PMSM motor and variable speed control (PRO System), it ensures precise and silent manoeuvres. This system integrates via S-Link for simplified connectivity and a practical "Hold" function.

Supplied as a single unit, without accessories.

On request

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Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of approved installers

Find an installer

Support service

Opt for additional installation assistance

Technical specifications

Lubrication Method	Gravity feed
Operating voltage	24
Thruster Type	Retractable
Thrust Force	170
Tunnel Diameter	250

Detailed description

Designed for vessels from 15 to 22 meters, the Sleipner retractable thruster ERL170/250TC-24V delivers 170 kg of thrust for precise manoeuvring. This thruster system operates on 24 V and features a 6-phase, brushless PMSM synchronous motor optimized for marine use. Its 250 mm tunnel diameter suits a variety of installations while maintaining a current draw of 395 A (at 21 V).

Advanced technology and performance

The Sleipner ERL170/250TC-24V is equipped with the Pro Thruster system featuring variable speed control, allowing precise power adjustment and noise reduction. The Q-Props™ dual counter-rotating propellers maximize thrust within a reduced tunnel diameter and reduce noise levels by up to 75 % under controlled conditions. A "Hold" function simplifies docking by holding the boat against the dock with a single press.

System integration and reliability

Weighing 93 kg net, this retractable thruster is up to 50 % lighter and 40 % more compact than comparable models, simplifying installation. It integrates an inverter for variable speed control and simplified wiring. The S-Link™ CAN-based control system ensures seamless integration with other Sleipner equipment via compact, color-coded, waterproof connectors.

The ERL170 thruster design includes a sealed, lifetime-lubricated drive leg with a durable mechanical seal for water intrusion protection. Galvanic isolation, overheat protection (with power reduction for PRO™ models), ignition protection (compliant with ISO 8846), and dual-button secure start contribute to its durability and reliability in marine environments. Active air cooling maintains optimal performance.

Documentation

Type	Nom
	Documentation Sleipner — PROPULSEUR RETRACTABLE ERL170 24 V 170 KG EVISION D 250 MM

Expert opinion

« Sleipner ERL170: Docking control and system integration for large yachts »

The Sleipner ERL170 retractable thruster is an advanced manoeuvring solution for yachts and sailboats from 15 to 22 meters. Its design integrates a 6-phase PMSM synchronous motor and the PRO variable-speed system, distinguishing it from conventional "on/off" thrusters by offering proportional control. This feature is critical for delicate harbour manoeuvres or tight spaces, enabling precise thrust application without jerks or excessive noise thanks to Q-Props propellers.

The integration of the S-Link system, with its waterproof and coded connectors, simplifies wiring and networking with other Sleipner equipment, providing a consistent solution for the bridge. Its compact size and reduced weight (up to 50% lighter and 40% smaller than comparable models) are major advantages for installation, particularly in hull bilges where space is often limited. The "Hold" function is a notable benefit for reduced-crew navigation, securing docking.

While physical installation is eased by its compact design, the ERL170 is a complex system that must undergo a sizing and installation study by a professional. Selecting the voltage, validating accessories, and ensuring compatibility with the vessel's electrical architecture are key steps to guarantee long-term performance and reliability of this thruster. Its robustness is enhanced by a permanently lubricated drive leg, galvanic protection, and active thermal management, ensuring durability suited to marine constraints.

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Retractable thruster Sleipner ERL170 24 V, 170 kg

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Frequently Asked Questions

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What is the thrust power and voltage of this bow thruster?

The Sleipner ERL170 retractable thruster provides a thrust power of 170 kg. It operates at a voltage of 24 V.

What is the Q-PROP™ technology used on this thruster?

Sleipner’s Q-PROP™ technology uses a five-bladed, skewed propeller. This specific design reduces propeller operating noise by 20 to 40 % in real-world installations while maintaining or improving thrust performance.

Is it possible to upgrade this thruster with the PRO™ variable speed control function?

Yes, most Sleipner (Side-Power) DC 12V and 24V models manufactured from 1999/2000 onwards can be upgraded to the PRO™ variable speed control. This feature enables smooth, silent, and precise maneuvering with variable speed operation, and includes a hold function for twin systems.

Why is this thruster only available on request?

This thruster is offered only on a quote basis as it is a primary equipment requiring thorough validation. This includes precise sizing, confirmation of the voltage (24 V for this model), study of the optimal installation on the vessel, and determination of the necessary accessories for a correct and secure installation.

What is a retractable thruster and what are its advantages?

A retractable thruster is a type of bow or stern thruster that can be fully retracted into the vessel's hull when not in use. This maintains a smooth hull, reducing drag and improving the boat's hydrodynamics while sailing.

Its main advantages include:

Drag reduction: No fixed appendage under the hull while sailing.Protection: The thruster is protected from impacts and debris when retracted.Aesthetics: Invisible when not in use.

What are the main technical features of the Sleipner ERL170 thruster?

The Sleipner ERL170 thruster integrates several advanced technologies designed to enhance safety, control, and performance:

Intelligent Power Control: Minimizes mechanical wear and monitors solenoid performance.Gravity Lubrication: A separate oil reservoir feeds the lower unit by gravity, ensuring effective sealing and simplifying oil changes.Overheat Protection: Automatically detects high internal temperatures and shuts down the system to prevent damage.Galvanic Isolation: All immersed components are electrically isolated from the onboard system to eliminate stray currents and prevent corrosion.Q-PROP™: A five-blade, skewed propeller that reduces operating noise by 20 to 40%.

What is the lubrication system of the Sleipner ERL170 thruster?

The Sleipner ERL170 thruster uses a gravity-fed lubrication system. A separate oil reservoir, located above the waterline, feeds oil to the gearcase by gravity. This mechanism creates positive pressure to ensure effective sealing against water and simplifies oil drain operations.