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SLEIPNER SEP50S PROPORTIONAL TUNNEL THRUSTER | 12V | 50KG/110LB | IGNITION PROTECTED | SEP50/140S-1IP
$5,985.00
SLEIPNER SEP50S PROPORTIONAL TUNNEL THRUSTER | 12V | 50KG/110LB | IGNITION PROTECTED | SEP50/140S-1IP
$5,985.00
Get it between July 29 and July 31.
Low in stock
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At MarineXGear, we are proud to have the best refund and return policies in the industry. If you’re not satisfied with your purchase for any reason, you may return it to us within 30 days for a refund.
If you have a problem with our order (there are missing components, damages, or the product is not functioning), please reach out to us as quickly as possible. Some of the problems can be resolved by going through the product manual or the product FAQs.
Refer to our Refunds & Return Policy for more details.
Order Processing
Once we receive your order, we will send you a confirmation email. Then we will process the order by confirming that the product is in stock and ready for shipment. If any of the items in your order are back-ordered, we will reach to you via email or phone and you may choose to either wait or receive a 100% refund.
Please allow 1-3 days for processing your order.
Shipping
We ship to the lower 48 continental United States only at this time.
Shipping times and shipping method will depend on the specific product and brand you purchase. If you have any shipping question, feel free to ask on the chat or email us at info@marinexgear.com.
We will send tracking information by email the same day the shipping tracking number is created/available.
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SLEIPNER SEP50S PROPORTIONAL TUNNEL THRUSTER | 12V | 50KG/110LB | IGNITION PROTECTED | SEP50/140S-1IP
Pinpoint docking precision for mid-sized vessels in a fully sealed, ignition-protected configuration. The Sleipner Side-Power SEP50S (SEP50/140S-1IP) is a premium 12V proportional tunnel thruster engineered with a powerful 2.4 kW (3.2 Hp) motor designed for boats from 27 to 37 feet. Delivering a robust 50 kg (110 lbs) of lateral thrust through a compact 140mm tunnel, this unit features S-Link™ Proportional Control—allowing you to smoothly throttle your power rather than blasting at full speed, giving you whisper-quiet, exact command over your bow or stern.
The IP (Ignition Protected) designation means the electric motor and internal relays are hermetically sealed inside an airtight composite casing. This contains any potential electrical sparks, making it legally compliant and completely safe for installation in gasoline engine compartments, fuel tank lockers, or damp, high-humidity bilge areas.
Key Features:
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True Proportional Power (S-Link™): Offers exact, metered variable speed control. Apply a gentle, quiet 10% nudge to smoothly hold position at the slip, or throttle up to 100% power to fight heavy crosswinds and tearing currents.
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Ignition Protected (IP) Certified: Hermetically sealed to prevent fuel vapor ignition (ISO 8846 & UL 1500 compliant). It is fully safe for gasoline-powered motorboats and provides an airtight shield against corrosive bilge moisture.
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Maintenance-Free Sealed Gearleg: Features a factory-sealed gearleg pre-filled with specialized lifetime gear oil. Mechanical ceramic seals ensure zero oil leaks and absolute water tightness, completely eliminating regular gear oil changes.
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High-Output 2.4 kW (3.2 Hp) Motor: Delivers optimal power-to-weight performance from a standard 12V marine electrical grid, maximizing thrust while managing amp draw effectively.
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Aerodynamic 5-Blade Q-Prop™ Propeller: Outfitted with an aerodynamically skewed composite single propeller that maximizes raw water-flow velocity through the 140mm tunnel while reducing cabin noise by up to 75%.
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Intelligent Power Control (IPC): Sleipner’s patented smart monitoring firmware protects the internal relays, preventing instant directional shifts and automatically cutting power if an electrical fault or overheating occurs.
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Intelligent "Hold" Function: When paired with a proportional control panel, you can press the "Hold" button to lock in a specific thrust percentage—letting the thruster hold the boat against the dock single-handedly while you safely tie off mooring lines.
Specifications:
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Part Number: SEP50/140S-1IP (SEP50S-12V)
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Thrust Power: 50 kg (110 lbs) at 10.5V / 62 kg (136 lbs) at 12V
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Motor Output: 2.4 kW (3.2 Hp)
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Typical Vessel Size: 27 to 37 Feet (8 to 11 meters)
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System Voltage: 12V DC
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Tunnel Diameter: 140 mm (5.5'')
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Control System: S-Link™ Digital Bus (Variable Speed)
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Propulsion Type: Single 5-Blade Q-Prop™
Pro Tip: The compact 140mm tunnel diameter makes the SEP50S an incredible choice for boats with narrow bow sections where a larger 185mm tunnel won't fit. Combined with the fully sealed housing, it is one of the most versatile and safe upgrade paths available for modern 12V cruiser retrofits.
Why Choose MarineXGear
At MarineXGear, we believe true peace of mind on the water starts with having the right equipment. Our mission is simple: to be the trusted destination for premium marine gear and dependable on-water solutions. Every product we carry — whether navigation systems, safety equipment, marine electronics, or boat accessories — is carefully chosen to help you perform at your best, stay safe, and get the most out of every voyage.
A+ Customer-First Approach
We're more than an online store — we're your partner on the water. Unlike large, impersonal retailers, our dedicated team delivers personalized guidance at every step. Whether you're outfitting a vessel for the first time, upgrading your gear, or need expert advice on a specific product, our specialists are always just a call or email away.
Passion for Wellness & Resilience
Our brand is built on a genuine love for the sea. We live and breathe marine equipment — and when you reach out to MarineXGear, you'll connect with experts who understand both the technical specs of our products and the on-water lifestyle they support.
Trusted Experts, Curated Brands
We partner directly with the most respected names in the marine industry. Our curated selection ensures every product meets our high standards for quality, durability, and performance on the water. With MarineXGear, you shop with confidence, knowing you're investing in proven gear backed by full manufacturer warranties.
More Reasons to Choose MarineXGear
- Price Match Guarantee – We’ll match any competitor to ensure you always receive the best value.
- Free Shipping – Enjoy free delivery on most orders across the lower 48 U.S. states.
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At MarineXGear, we're committed to keeping you safe, equipped, and confident on the water. With our expertise, personalized service, and carefully curated selection, you can invest in your vessel and your adventures with complete peace of mind.
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