BLUE SEA M-Series Battery Switch 6005



300 Amps continuous rating for outboards and small gasoline or diesel engines.


  • Removable Key
  • Tin-plated copper studs for maximum conductivity and corrosion resistance
  • Studs accept 3/8″ (M10) ring terminals
  • 7/8″ (22mm) stud length accepts multiple cable terminals
  • Blue Sea Systems one-piece terminal stud design never loosens over time
  • Isolating cover with three snap-in side pieces protects rear contacts and allows sire access in any direction
  • Case design allows surface, rear, or front panel mounting options


Part No. BS/6005
Colour Red
Switch Type Single Circuit ON-OFF
Switch Positions 2
Battery Combine No
Alternator Field Disconnect No
Maximum Voltage 48V DC
Terminal Stud Torque 120 in-lb (13.56 Nm)
Continuous Rating 300A
Intermittent Rating 500A (5 min)
Cranking Rating 10 sec 1500A
Cranking Rating 1 min 775A
Battery Inputs 1
Cable Clearance For 4/0 AWG Cables 1.12in (28.45 mm)
Cable Size to Meet Ratings 4/0 AWG (120mm²)
Mounting Holes Accept #10 Screw
Terminal Stud Size 3/8″ – 16 (M10)
Weight 0.62lb (0.28 kg)