Blue Sea m-Series Mini On-Off Battery Switch w/ Knob


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Blue Sea m-Series Mini On-Off Battery Switch w/ Knob

The Blue Sea m-Series Mini On-Off Battery Switch switches a single battery to a single load group. This switch has a removable knob for security and service lockout and allows for surface mounting, and front or rear panel mounting.

Blue Sea m-series battery switches provide 300 Amps continuous rating for outboards and small gasoline or diesel engines. These battery switches are built with tin-plated copper studs for maximum conductivity and corrosion resistance. The one-piece terminal stud design never loosens over time, while one-piece stainless flange nuts ensure safe and secure connections. Each m-series switch has breakout tabs that allow for wire access in any direction. 


  • Switch Type: Single Circuit ON-OFF
  • Color: Black
  • Switch Positions: 2
  • Maximum Voltage: 48V DC
  • Terminal Stud Torque: 120 in-lb.
  • Continuous Rating: 300A
  • Intermittent Rating: 500A (5 min)
  • Battery Inputs: 1
  • Cable Clearance for 4/0 AWG Cables: 1.12 in.
  • Cable Size to Meet Ratings: 4/0 AWG
  • Mounting Holes: Accepts #10 Screw
  • Terminal Stud Size: 3/8" - 16
  • Weight: 0.65 lb.

Meets all American Boat and Yacht Council (ABYC) requirements for battery switches.

California Residents: warning sign WARNING Cancer and Reproductive Harm -

Other Details

Google Product Type:
Battery Switch
Number of Banks:
1 Battery
Product MPN:
Product UPC:

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