Defender Home Page
Phone: 800-628-8225 Fax: 800-654-1616 Int'l.: 860-701-3400 Email: Contact Us
Follow us on Facebook
Shipping Info
Defender Home Page
Your Cart
null View Cart View Shopping Cart
null Check My Order(s)
null Track My Package(s)
Conversion Chart
Shopping Areas
Boats & Motors
null Defender Seal null
promo A
promo B
promo C
promo D

Side-Power SEP210/250TC DC Thruster (ProportionalControl)

  • Type: Twin Prop Counter Rotate, Blades: 5, Thrust: 462 lbs @ 21 VDC (13.15 HP)
  • Operating Power: 21 Volt DC, Draw: 670 Amps @ 21 Volts DC
  • Boat Length: 55-78', Tunnel Diameter: 9.8" (250 mm), Power: 24 Volts DC
  • Item #: 
    Model #: 


    Shipping Weight: 
    149.00 Lbs.
    List Price: 
    Note:  This item ships from the manufacturer.
    It typically ships within 2 business days  (more...)
    Status:   null Ships Direct

    Quantity : 

    Shipping Note:
    It ships ONLY by Truck Freight.
    Please call us at 800-628-8225 or E-mail for a valid shipping quote, since Truck Freight rates change regularly.
    This item ships directly from the manufacturer.

    Side-Power General Features:

    • Built for outstanding performance, you can rely on your Side-Power bow thruster or stern thruster year after year
    • Boat builders all over the world are choosing Side-Power for reliability, ease of installation and unrivalled safety features
    • This commitment to quality has made the new range of Side-Power thrusters manufactured by Sleipner Motor the market leader
    • Performance
      • The high performance of a Side-Power thruster is a result of their continuous efforts in product development and testing. propulsion technology know-how 5 bladed composite propellers purpose-built high power electric motors improved water flow from streamlined gearhouse design
    • Safety:
      • Side-Power thrusters include several features to ensure the safety of your boat and its passengers
      • These features protect against technical and operator errors
      • No overheating of electric motor
      • Mechanical protection of drive gear
      • Electronic protection against sudden change of drive direction
      • No accidental operation from child safe on/off and automatic deactivation
      • IPC comes standard on all DC electric thrusters hence reducing solenoid wear and the risk of lock in
    • Reliability:
      • The quality of a Side-Power thruster is always one step ahead
      • In house manufacturing and assembly
      • Engineering through experience
      • Use of superior materials
      • Controlled quality of every supplied part
      • 2-Year limited warranty
    • Installation
      • Through their extensive experience and close co-operation with major boat builders we know how important a correct installation is for the thruster system
      • Therefore they have made all the preparations to ensure that it is easy to install a Side-Power correctly
      • Compact-sized units
      • "Plug and Go" Electric wiring
      • Easily accessible battery cable terminals
      • Fast and safe propeller mounting with locknut
      • Professional and solid GRP stern thruster kits
      • Easy access zinc anodes

    The Speed Controlled Thrusters ( SEP Series ) Features:

    • The SEP series are basically SE thrusters with the addition of the DC Power control system
    • Providing even more accurate control by fully regulating the power of the thruster as well as providing even longer run times, this is the latest in DC electric thrusters
    • The noise reduction and automatic "Hold" function are further benefits provided by the SEP series
    • Powerful single speed thrusters can, in light weather conditions, be a bit difficult to use as they push the boat too fast
    • The solution is to fit the new Sidepower DC Power Controller which enables proportional speed control of a DC electric thruster
    • By also controlling the thruster's power, you get even more precise handling of the boat in all conditions
    • Another great advantage is that when you run the thruster at less than full power, the usable run time is extended, with close to continuous usage being possible when you are running the thruster at less than 50% of full power (percentage of thrust with continuous duty depending on thruster model)

    SEP210/250TC Features:

    • Side-Power 210 kg Proportional Speed Control DC Thruster
    • Power: 24 Volt
    • Twin Counter-Rotating 5-blade Props
    • Sealed Gearleg
    • Tunnel Diameter: 250 mm
    • The unique "hold" feature allows you to keep the boat in position at dock or in locks


    Thrust @ 21VDC
    462 lbs (210 kg)
    Thrust @ 24VDC
    550 lbs (250 kg)
    Typical Boat Size
    55-78' (17-24 m)
    Tunnel Diameter
    9.8" (250 mm)
    Propulsion System
    Twin Counter Rotating
    Power @21V
    13.15 hp (10 kw)
    Minimum Battery Capacity
    650 CCA SAE
    Recommended Fuse Size
    500 Amp (SMANL500)
    Min Depth to Top of Tunnel
    7.40" (188mm)
    Min Depth to Center of Tunnel
    14.76" (375mm)

    Other items to consider when purchasing a new thruster: (Sold Separately)

    • Bow Tunnel or Stern Tunnel
    • Control Panels and Accessories
    • Remote Controls
    • Manual Battery Switch and Fuse & Fuseholder
    • S-Link Control Cabling

    Note: On/Off Thruster Systems can be Upgraded to Speed Control Thrusters. Call Defender or Imtra for Additional Details


    Documentation available at the following links:

    Click Here to See More Information about S-link Systems

    Side-Power S-Link System Dual Joystick Speed Control Panel with Display
    Item #: 305704
  • Allows Fingertip Control of both Bow and Stern Thruster with Hold Function
  • Dimensions: 5.55" H x 3.27" W (141 x 83 mm)
  • Designed for Plug and Play S-link Control Cable Wiring
  •  Include
    Model #:
    Side-Power S-link System T-Connector for Spur
    Item #: 305707
  • (1) Required for each S-link Spur Including the Power Cable
  • Round, Compact and Waterproof Plug
  • Designed for Plug and Play S-link System Wiring
  •  Include
    Reg. Price

    Sale Price

    Model #:
    Side-Power S-link System Cable Terminator
    Item #: 305708
  • (1) Required for in each End of the Backbone "Loop"
  • Round, Compact and Waterproof Plug
  • Designed for Plug and Play S-link System Wiring
  •  Include
    Reg. Price

    Sale Price

    Model #:
    Side-Power S-Link System Backbone Extender Connector
    Item #: 305709
  • Designed to Allow Addition of Backbone Cables to S-link Systems
  • Round, Compact and Waterproof Plug
  • Designed for Plug and Play S-link System Wiring
  •  Include
    Reg. Price

    Sale Price

    Model #:
    Side-Power S-Link System Spur Power Cable
    Item #: 305710
  • Cable Length: 2.5 meters
  • (1) Required for S-link System
  • Designed for Plug and Play S-link System Wiring
  •  Include
    Reg. Price

    Sale Price

    Model #:
    Side-Power S-Link System Spur Cable
    Item #: 305846
  • Select Cable Length
  • Round, Compact and Waterproof Plugs
  • Designed for Plug and Play S-link System Wiring
  •   null
    Reg. Price:
    From: $42.99
    To: $69.99

    Sale Price:
    From: $37.83
    To: $61.59
    Side-Power 8730 S-Link System Switch Interface
    Item #: 305706
  • Required when Building an S-link System
  • Connects Foot Switches, Standard Radio Remotes and Control Panels
  • Power: 12 / 24 Volt DC, Select Bow or Stern Thruster Interface
    Model #:
    Side-Power Automatic Main Switch for S-Link System (Speed Control) Thrusters
    Item #: 305722
  • Provides User Friendly and Safe Thruster Control, Select Power
  • Includes Emergency Manual and Automatic On / Off Feature
  • Requires Proper Fuse for Specific Thruster (Fuse Sold Separately)
    Model #:
    Multiple Voltage Choices Available
    Side-Power S-Link System Backbone Cable
    Item #: 305845
  • Select Cable Length
  • Round, Compact and Waterproof Plugs
  • Designed for Plug and Play S-link System Wiring
  •   null
    Reg. Price:
    From: $42.99
    To: $164.99

    Sale Price:
    From: $37.83
    To: $145.19

    Have A Suggestion?

    Help us make our site better for everyone! Let us know you've found something wrong or frustrating on this page and we will improve it. Please mark each that apply.

    Product has been improperly categorized
    Page loads too slowly
    Product information is incorrect
    Page has errors or bugs
    Site is frustrating or difficult to use
    Product image is missing or wrong
    Cannot find my size
    Spelling errors on page
    Not enough product information

    Comments or Examples:
    Examples: Missing information such as dimensions and model number, typos, inaccuracies, etc...

    Please include your e-mail address below if you would like us to respond to your comments or questions.             

    Join Our Email List And Receive our Monthly Promotions
    Defender Email Specials
    Click Here For Our Privacy Policy