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Rule 35A Marine Rule-A-Matic Switch - 12V Automatic Bilge Pump Switch - Mercury Free, Durable, Reliable, and Easy to Install
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Rule 35A Marine Rule-A-Matic Switch - 12V Automatic Bilge Pump Switch - Mercury Free, Durable, Reliable, and Easy to Install
Don’t settle for anything less than a genuine Rule product, the Rule-A-Matic is the switch of choice for boaters the world over.
Rule 35A Marine Rule-A-Matic Switch - 12V Automatic Bilge Pump Switch - Mercury Free, Durable, Reliable, and Easy to Install
Item #: 112133534

Rule 35A Marine Rule-A-Matic Switch - 12V Automatic Bilge Pump Switch - Mercury Free, Durable, Reliable, and Easy to Install

Item #: 112133534

TTD 394

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Don’t settle for anything less than a genuine Rule product, the Rule-A-Matic is the switch of choice for boaters the world over.
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What Stands Out

Automatic Operation
This switch enables hands-free bilge pumping, eliminating the need for manual activation and ensuring your boat stays safe from flooding even when you're not present.
Mercury Free
Designed without mercury, this eco-friendly switch not only meets environmental regulations but also enhances safe usage, avoiding toxic substances commonly found in similar products.
Durable Construction
Crafted for long-lasting performance, the Rule 35A switch is resistant to challenging marine environments, providing reliability and peace of mind on all your boating adventures.

Product Details

Shop Rule 35A Marine Rule-A-Matic Switch - 12V Automatic Bilge Pump Switch - Mercury Free, Durable, Reliable, and Easy to Install online at a best price in Trinidad and Tobago. B0C8HTQNVX
Power SourceCorded Electric
Voltage12 Volts (DC)
ColorWhite
Product StyleMusic
Item Dimensions L x W x H8.38"L x 5.13"W x 3.25"H (21.3 x 13 x 8.3 cm)
Item Weight4 ounces (113.4 grams)
Material TypePlastic
Brand NameRule
Model Number35
Global Trade Identification Number00042237095435
ManufacturerRULE
UPC696582485641 042237095435 617297076870 666668135845 042237083722 071030261204 773975400198 611104328671 779421381288 042237106230 014445389231 012304410966 826713868894 675904094815 072090742719 826713868900 963041571116
Specific Uses For ProductBoating, Traveling, Emergency, Cruise
Manufacturer Part NumberRM500B
Item Type NameRule 35A Rule-A-Matic Float Switch - 12-24 VDC
Unit Count1.0 Count
Included ComponentsRule 35A Rule-A-Matic Float Switch - 12-24 VDC
BrandRule
MaterialPlastic
StyleMusic
Product Dimensions (L x W x H)8.38"L x 5.13"W x 3.25"H (21.3 x 13 x 8.3 cm)
Number of Packs1

Who Should Buy?

Suitable For
  • Boat Owners

    Ideal for boat owners needing a reliable automatic bilge pump switch for efficient water management.

  • DIY Enthusiasts

    Perfect for DIY enthusiasts seeking an easy-to-install switch for their custom marine applications.

  • Environmental Advocates

    Great for environmentally-conscious individuals who prefer mercury-free options in their marine equipment.

Not Suitable For
  • Large Vessels

    Not ideal for large boats requiring high-capacity bilge pumps and more robust switch systems.

Product Description

Rule 35A Marine Rule-A-Matic Switch - 12V Automatic Bilge Pump Switch - Mercury Free, Durable, Reliable, and Easy to Install

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the Rule 35A Marine Rule-A-Matic Switch used for?

    Answer: The Rule 35A Marine Rule-A-Matic Switch is designed for automatic activation of bilge pumps in boats. This switch senses water levels and activates the pump when water accumulates, ensuring your vessel remains buoyant and minimizes the risk of sinking. By utilizing this switch, boaters can focus on their activities without worrying about manually operating the pump. It's particularly useful in scenarios with changing water conditions, such as rain or wave action.
  • Question: How does the Rule 35A switch operate automatically?

    Answer: The Rule 35A switch features a built-in float mechanism that detects rising water levels in the bilge area. Once water reaches a specific threshold, the float lifts, triggering the switch to activate the connected bilge pump. This automatic operation is crucial for boat safety, as it continuously monitors the bilge area and provides peace of mind, especially during long trips or when the boat is moored unmanned.
  • Question: Is the Rule 35A switch mercury-free?

    Answer: Yes, the Rule 35A switch is mercury-free, making it an environmentally safe choice for boaters. The absence of mercury not only contributes to reducing toxic chemicals in marine environments but also aligns with modern boating standards that favor sustainable and eco-friendly products. This switch enhances user safety while preserving water quality, making it ideal for conscientious boat owners.
  • Question: How durable is the Rule 35A Marine Rule-A-Matic Switch?

    Answer: The Rule 35A is built with durable materials that are resistant to corrosion, making it suitable for the harsh marine environment. Its robust construction ensures longevity and reliable performance, even in turbulent conditions. By investing in a durable switch like this, boaters can reduce the frequency of replacements and enjoy a consistent pumping experience, particularly in challenging water conditions.
  • Question: What is the installation process for the Rule 35A switch?

    Answer: Installing the Rule 35A switch is straightforward, requiring minimal tools. It typically involves mounting the switch in the bilge and connecting it to a 12V power source and the bilge pump. Clear instructions are usually included, allowing boaters to set it up without professional assistance. This simplicity in installation appeals to many DIY enthusiasts who appreciate self-sufficient maintenance of their vessels.
  • Question: Can the Rule 35A switch be used with any bilge pump?

    Answer: The Rule 35A switch is compatible with most 12V bilge pumps, enabling versatile integration across various boat models. By correctly pairing the switch with an appropriate pump, boaters can ensure seamless operation and reliable water removal. This adaptability makes it an excellent choice for different types of watercraft, from small fishing boats to larger yachts.
  • Question: How does the Rule 35A enhance overall boating safety?

    Answer: By ensuring automatic activation of bilge pumps, the Rule 35A plays a vital role in preventing water accumulation, which can lead to capsizing. Regular maintenance checks further enhance safety when used in tandem with the switch. In emergencies, this reliability allows boaters to focus on navigation and rescue rather than manual pumping, promoting a safer boating environment overall.
  • Question: What maintenance does the Rule 35A switch require?

    Answer: The Rule 35A Marine Rule-A-Matic Switch is low maintenance, primarily requiring occasional cleaning of debris in the bilge that might obstruct the float mechanism. Regular inspections to ensure the float operates freely and that connections are secure will help maintain optimal performance. This minimal upkeep allows boaters to focus more on their activities and less on equipment maintenance.
  • Question: What makes the Rule 35A a reliable choice among other bilge pump switches?

    Answer: The Rule 35A stands out due to its robust construction, mercury-free design, and proven automatic functionality. Boaters often prioritize reliability, and this switch’s trustworthy performance during fluctuating conditions ensures that it effectively meets safety demands. Many users report high satisfaction rates, referencing its durability and responsiveness during critical moments, reinforcing its reputation as a top choice in the market.
  • Question: Where can I buy the Rule 35A Marine Rule-A-Matic Switch in Trinidad and Tobago?

    Answer: You can conveniently purchase the Rule 35A Marine Rule-A-Matic Switch from Ubuy in Trinidad and Tobago. Ubuy offers a reliable online shopping experience with easy access to a variety of marine supplies, including this essential bilge pump switch. Their platform ensures product authenticity and customer satisfaction, making it a trusted choice for your marine equipment needs.

Rule Bilge Pumps 35 Editorial Review

The Rule 35A Marine Rule-A-Matic Switch is acclaimed for its durability, reliability, and ease of installation, making it an ideal choice for boaters in need of a dependable bilge pump switch. Many users have praised the solid feel of the switch and the high-quality materials used, highlighting its marine-grade Construction as a significant advantage. Reports of long-term performance after years of effective operation underscore the importance of proper installation; it is advisable to mount the switch in a location that minimizes its contact with bilge water to enhance its longevity. The switch's design facilitates mounting it securely while allowing for easy access for maintenance—a crucial feature given the challenging environments where such devices are commonly installed. While some identified minor drawbacks, such as a preference for a quicker activation response, the device overall is lauded for its ability to prevent water accumulation effectively, allowing users to enjoy their time on the water without the Constant worry of manually operating a pump. Additionally, those who have faced pump failures often choose Rule for a replacement due to its reputation for reliability. In summary, the Rule 35A Marine Rule-A-Matic Switch stands out in its category, offering peace of mind to boat owners by performing reliably under various conditions, ensuring buoyancy even when the boat faces leaks, and enhancing the overall safety during outings. **

Customer Reviews & Ratings

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Pros

  • Durable and reliable marine-grade Construction
  • Positive feedback on effectiveness and long-term performance
  • Easy installation and maintenance
  • Automatically operates bilge pumps, reducing manual effort
  • Well-suited for various boat designs and situations

Cons

  • Some users prefer a quicker activation time

Platform Trust & Buyer Confidence

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4.2/5 9250 + reviews
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Mohammad
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“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”

23 July 2026 · via Trustpilot
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“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”

22-Jul-26 · via Trustpilot
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“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”

23-Jul-26 · via Trustpilot
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Onesi
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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”

22 July 2026 · via Trustpilot
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SAO JOHN
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“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”

23 July 2026 · via Trustpilot
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Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

TTD 394

Order now and get it around Thursday, August 20

QTY:

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Features & Benefits

  • Improved design ensures fast 1100 GPH flow at just 12 volts.
  • Mercury-free snap switch tested for over a million cycles.
  • Built-in thermal protection to safeguard the pump and vessel.
  • Features check valves and a hidden air vent to prevent airlocks.
  • Easy to install with a removable switch for hassle-free cleaning.
  • Quality construction with a stainless steel shaft for durability.

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