Master Disconnect Switch
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Master Disconnect Switch Master Disconnect Switch
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BWD Master Disconnect Switch

Part No. S640 Warranty Details  
Quantity  Add to Cart

Fit of this part varies by vehicle & equipment specs Type of Fit

BWD® is an aftermarket leader, providing a premium line of engine management products. BWD® manufactures and distributes high technology critical components for late model domestic and import vehicles. BWD® is constantly evolving to give customers the competitive edge they need to compete in today's ever-changing marketplace.

Product Features:
  • Direct-fit OE replacement ensures proper fit, form, and function, which leads to a trouble-free installation
  • Designed and manufactured to our stringent quality standards at a certified facility, so you can install with confidence
  • Premium components and durable materials withstand harsh engine conditions to increase longevity and lifespan
  • Undergoes extensive testing and validation for proper performance and peak reliability
  • As a global manufacturer of automotive aftermarket products, we maintain complete quality control throughout the manufacturing process
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Connector Gender:Female
List Of Functions:Battery Disconnect Switch
Terminal Gender:Male (1)
Terminal Quantity:4
Voltage:12 v

Do you have questions about this product?


Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

2 Questions | 2 Answers
Displaying questions 1-2
  • Q:

    How many amps is this rated for?
    Asked on 8/9/2013 by Brett from Austin, TX

    1 answer



      The BWD Multi Purpose Switch (Part No. S640) amperage rating is 175A in continuous duty and 800 A in intermittent duty. For any further assistance, please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

      Answered on 8/12/2013 by Steve from AAP
  • Q:

    Is this a universal product that will fit any car?
    Asked on 12/5/2009 by Dave

    1 answer

    • A:

      Yes, this is a universal product. It is designed to kill all power to your vehicle. The larger post go to the battery while one smaller one goes to the alternator and one is a ground.

      Answered on 2/3/2010 by Dave from Salisbury
Displaying questions 1-2

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