--- product_id: 4139220 title: "35A Marine Rule-A-Matic Switch - 12V Automatic Bilge Pump Switch - Mercury Free, Durable, Reliable, and Easy to Install" brand: "rule" price: "942 kr" currency: NOK in_stock: true category: "Rule" url: https://www.desertcart.no/products/4139220-35a-marine-rule-a-matic-switch-12v-automatic-bilge-pump store_origin: NO region: Norway --- # 12-24V DC compatibility Easy, hassle-free installation Mercury-free, corrosion-resistant build 35A Marine Rule-A-Matic Switch - 12V Automatic Bilge Pump Switch - Mercury Free, Durable, Reliable, and Easy to Install **Brand:** rule **Price:** 942 kr **Availability:** βœ… In Stock ## Summary > πŸ›₯️ Rule the waves with effortless bilge protection! ## Quick Answers - **What is this?** 35A Marine Rule-A-Matic Switch - 12V Automatic Bilge Pump Switch - Mercury Free, Durable, Reliable, and Easy to Install by rule - **How much does it cost?** 942 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/products/4139220-35a-marine-rule-a-matic-switch-12v-automatic-bilge-pump) ## Best For - rule enthusiasts ## Why This Product - Trusted rule brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Plug & Play Setup:** Quick and simple installation means you’re protected in no time. - β€’ **Trusted by Boaters:** Top-rated with 4.7 stars and a proven track record in marine water management. - β€’ **Precision Performance:** Activates exactly when needed, ensuring your vessel stays safe in any condition. - β€’ **Automatic Water Defense:** Hands-free bilge pump activation keeps your boat dry without lifting a finger. - β€’ **Marine-Grade Durability:** Built tough with mercury-free, corrosion-resistant materials for long-lasting reliability. ## Overview The Rule 35A Marine Rule-A-Matic Switch is a mercury-free, corrosion-resistant automatic bilge pump switch designed for 12-24V systems. It activates your bilge pump precisely when water rises, ensuring reliable, hands-free water management. Easy to install and built for harsh marine environments, it offers durable, dependable performance backed by a 2-year warranty and top user ratings. ## Description Ensure your boat stays dry and protected with the Rule 35A Marine Rule-A-Matic Switch, a trusted solution for automatic bilge pump activation. Designed for seamless operation, this float switch automatically engages your bilge pump when water levels rise, providing hands-free water management and reducing the risk of flooding. Built with marine-grade materials, the mercury free Rule 35A is resistant to corrosion and harsh conditions, ensuring long-term durability and reliable performance in saltwater and freshwater environments. Its easy installation process makes it a practical choice for boat owners looking for a dependable, no-fuss solution to bilge water control. Whether you're a casual boater or a seasoned mariner, the Rule 35A Automatic Bilge Pump Switch offers peace of mind by keeping your bilge dry and your vessel safe. Pair it with a compatible 12V bilge pump for effortless water management on every journey. ## Features - Reliable Automatic Bilge Control: The Rule 35A Marine Rule-A-Matic Switch ensures automatic activation of your bilge pump when water levels rise, preventing manual checks and safeguarding your vessel against unexpected water accumulation. - Durable, Marine-Grade Construction: Built to withstand harsh marine environments, this bilge pump switch is mercury free and features corrosion-resistant components, including a robust housing and high-quality wiring, ensuring long-lasting performance. - Easy Installation for Hassle-Free Use: Designed for straightforward setup, the Rule-A-Matic switch integrates seamlessly into your boat's bilge system. With simple wiring and clear instructions, installation is quick and convenient. - Dependable Performance in Every Condition: Engineered for reliability, this float switch activates your bilge pump precisely when needed, ensuring smooth operation whether you’re at the dock or on open water. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000O8DA3M | | Best Sellers Rank | #12,437 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #6 in Boat Bilge Pumps | | Brand Name | Rule | | Color | White | | Customer Reviews | 4.7 4.7 out of 5 stars (1,736) | | Global Trade Identification Number | 00042237095435 | | Included Components | Rule 35A Rule-A-Matic Float Switch - 12-24 VDC | | Item Dimensions L x W x H | 8.38"L x 5.13"W x 3.25"H | | Item Type Name | Rule 35A Rule-A-Matic Float Switch - 12-24 VDC | | Item Weight | 13 g | | Manufacturer | RULE | | Manufacturer Part Number | RM500B | | Manufacturer Warranty Description | 2 years | | Material Type | Plastic | | Model Number | 35 | | Number of Items | 1 | | Number of Packs | 1 | | Power Source | Corded Electric | | Product Style | Bilge Pumps Switches | | Specific Uses For Product | Boating, Traveling, Emergency, Cruise | | UPC | 696582485641 042237095435 617297076870 666668135845 042237083722 071030261204 773975400198 611104328671 779421381288 014445389231 012304410966 826713868894 675904094815 072090742719 826713868900 963041571116 | | Unit Count | 1 Count | ## Product Details - **Brand:** Rule - **Color:** White - **Global Trade Identification Number:** 00042237095435 - **Item Weight:** 13 g - **Manufacturer:** RULE - **Material:** Plastic - **Number of Packs:** 1 - **Power Source:** Corded Electric - **Product Dimensions:** 8.38"L x 5.13"W x 3.25"H - **Style:** Bilge Pumps Switches ## Images ![35A Marine Rule-A-Matic Switch - 12V Automatic Bilge Pump Switch - Mercury Free, Durable, Reliable, and Easy to Install - Image 1](https://m.media-amazon.com/images/I/41fUsHCz1QL.jpg) ## Available Options This product comes in different **Style** options. ## Frequently Bought Together - Rule 35A Marine Rule-A-Matic Switch (Mercury Free) - Rule High-Performance 1500GPH, 12 Volt Water Pump for Boats - Bilge Pump with Pressure Switch, Submersible Pump, and Float Switch - Ideal for Marine Accessories, Boating supplies, and Bilge Pumps - Rule 2000 GPH Bilge Pump 12V - Submersible Marine Boat Accessory with 1-1/8" Discharge, Anti-Airlock, Reliable Ignition Protection, Silent Operation, Easy-Clean Strainer - Rust/Corrosion Resistant --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.no/products/4139220-35a-marine-rule-a-matic-switch-12v-automatic-bilge-pump](https://www.desertcart.no/products/4139220-35a-marine-rule-a-matic-switch-12v-automatic-bilge-pump) --- *Product available on Desertcart Norway* *Store origin: NO* *Last updated: 2026-10-28*