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Dual Operation VSS Switch HD Optic - 12/24V - 500A
This Voltage Sensitive Switch (VSS) automatically senses connected battery bank voltage and provides optimal, efficient charging of the second bank. The VSS allows for independent battery banks to be combined or isolated based on the presence of a charging source (such as an engine alternator or battery charger), while also offering remotely activated, high current, emergency parallel connection.
Designed and constructed for longevity in the marine environment with tinned copper conductors, stainless steel nuts, and high temperature, fibre reinforced plastics. The units are ignition protected, provide On/Off switching operation, and may be recessed or surface mounted.
The remote emergency parallel function can be operated through a momentary button on the dash which will parallel the batteries for 10 minutes. Once this 10 minutes has passed, if the voltage is high enough, the voltage sensitive switch will stay engaged. If not, it will disengage.
Features:
- Dual battery sensing
- Manual override option
- Dual 12/24 volt operation (both banks must be same voltage)
- Low power consumption (<6mA)
- Lowered cut in voltage (13.3/26.6V) suits low output alternators and high temperature environments
Technical Specifications:
- Volts - 12/24V
- Rating - 500A
- Dimensions (L x W x H) - 4" x 4" x 4.3"
In the Box:
- Parallel Switch
- Instruction manual
*Sold as an Individual
WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.
Specifications:
- Lockable: No
- Positions: 2
- Continuous Amperage: 500
- Box Dimensions: 4"H x 4"W x 5"L WT: 1.1 lbs
- UPC: 843687004783
Owner's Manual (pdf)
Brochure (pdf)
FAQs
Product & Usage
1. Are KRANK tools built for professional use?
Yes, all our tools are engineered for heavy-duty performance and long-term reliability.
2. Are KRANK tools safe to use for beginners?
Yes, our tools are designed with safety features and easy handling in mind.
3. Can KRANK tools be used in extreme conditions?
Yes, they are tested to perform reliably in demanding environments.
Maintenance & Accessories
1. What maintenance is required for the tools?
Regular cleaning and proper storage are usually enough to keep your tools in top condition.
2. Can replacement parts or accessories be purchased separately?
Yes, we provide compatible parts and add-ons to extend the life of your tools.
3. Do you provide instruction manuals or usage guides?
Every tool comes with a detailed user manual, and digital guides are available online.
Warranty & Guarantee
1. Do the tools come with a warranty?
Every KRANK tool includes a 1-year warranty, with extended options available on select products.
2. How do I register my KRANK tool for warranty coverage?
You can register online using your product serial number for faster support.
3. What does the warranty cover?
It includes defects in materials and workmanship under normal use conditions.
4. Is there an option to extend the warranty?
Yes, extended warranty plans are available for select tools at checkout.
Purchasing & Support
1. How fast is shipping and delivery?
Orders ship within 24 hours, and delivery typically takes 3–5 business days.
2. Do you offer bulk or corporate purchasing options?
Yes, KRANK provides special pricing and packages for business or team orders.
3. How can I contact customer support if I need help?
You can reach our support team by email or phone — we’re here to assist you.
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