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Blue Sea Systems m-Series Selector 3 Position Battery Switch

Blue Sea Systems m-Series Selector 3 Position Battery Switch

  • Allows Switching Between Two Isolated Battery Banks
  • Continuous Rating: 300 Amps, Max. Voltage: 32 Volt DC
  • Ignition Protected, Make-Before-Break Contact Design
  • Item #: 
    Blue Sea Systems
    Model #: 


    Shipping Weight: 
    0.77 Lbs.
    List Price: 
    Our Price:
    Status:  null In Stock

    Quantity : 


    NOTE: Due to a recent fire at Blue Sea's facility, the lead time on out-of-stock Blue Sea products is longer than normal. We are unable to provide exact dates for each item, but Blue Sea expects to be caught up on orders by July.


    • Allows selection between 2 battery banks for connection to all loads
    • Ignition protected
      • Safe for installation aboard gasoline powered boats
    • Case design allows surface or rear panel mounting
      • Isolating cover with three snap-off side pieces protects rear contacts and allows wire access in any direction
    • Tin-plated copper studs for maximum conductivity, corrosion resistance
      • Studs accept 3/8 " (M10) ring terminals
      • One-piece terminal stud design never loosens over time

    Click Here for an Owner's Manual and Installation Guide with Dimensional Drawings for this Product

    Click Here for a Dimensional Drawing of this Product


    • Battery Inputs 2
    • Alternator Field Disconnect: No
    • Maximum Voltage: 32 Volt DC
    • Cranking Rating 30 sec: 900 Amp
    • Intermittent Rating: 5 min. (UL 1107) 500 Amp DC
    • Continuous Rating: 300 Amp DC
    • Terminal stud: Tin-plated copper, 3/8"-16 (M10)
    • Terminal Stud Torque: 120 in-lb (13.56 Nm)
    • Cable Size to Meet Ratings
      • 4/0 AWG (120 mm2)
      • 4/0 AWG (130 mm2)
    • Cable Clearance for 4/0 AWG Cables: 1.12in (28.45 mm)
    • Mounting Holes: #10 Screw
    • Terminal Stud Size: 3/8"-16 (M10)
    • Color: Red
    • CE marked
    • Meets all American Boat and Yacht Council (ABYC) requirements for battery switches
    • Ignition protected
      • UL Listed - UL 1107 for electric power switches
      • Meets UL 1500, SAE J1171 Marine, and ISO 8846 Marine for external ignition protection requirement, and IP66 for protection from particulates, water
    CA Prop65 warning


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