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Top Post Knife Blade Master Switch - Home Devices

$19.99$25.99Save 23%

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Product description


  • TOP LEVEL & HEAVY DUTY: This top post battery disconnect switch is made of brass material, corrosion resistance, conductive performance is good, durably made for safety use.

  • EASY TO INSTALL: This battery doctor knife switch for top post batteries can be adjusted into a vertical knife switch through the bottom of the screw, easy to install & simple to use. Switch the knife, then power will cut.

  • SAVE ELECTRICITY: This knife blade master switch is used for the battery to isolate and secure the electrical system, eliminate any power draw from the battery when vehicle or boat is not in use, stop unwanted battery drain and prevent theft or unauthorized use.


  • Material: Brass, PVC

  • Maximum Current: 750A

  • Rated Current: 250A

  • Mount on negative battery post


  • Disconnect batteries quickly

  • Stop unwanted battery drain

  • Helps with preventing theft, tampering and unauthorized use

  • Improve safety and security of stored vehicles, RVs and seasonal equipment

Package includes

  • 1 x Top Post Knife Blade Master Switch

Product Image


  • Due to variations of light and color settings of computer/personal device screens, colors may appear slightly different from photographic images.

  • Due to the manufacturing process, sizes of items listed in descriptions are approximate and actual size may vary slightly.

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