Single Circuit ON-OFF with Locking Key - Black - 4Boats

Single Circuit ON-OFF Lockable Key Switch - Black | 4Boats

BSS6004200

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£50.33 £47.40 Save £2.93
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Tax included.

Marathon Single Circuit ON-OFF switch with locking key, built for marine use on outboards and small petrol or diesel engines — ideal as a marine battery isolator.

  • Switch type: Single Circuit ON-OFF
  • Colour: Black
  • Maximum voltage: 48 V DC
  • Stud size: 9.5 mm (3/8")
  • Continuous rating: 300 A
  • Intermittent rating: 500 A
  • Cranking rating (30 s): 900 A
  • Stud material: Tinned copper
  • Stud torque: 13.56 Nm (120 in-lb)

Locking key provides secure isolation and the robust tinned studs deliver reliable performance for battery and starter circuits.

See our Battery Management collection for related products.

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