--- product_id: 4214077 title: "40A Rule-A-Matic Plus Bilge Pump Float Switch, 12, 24 or 32 Volt, Moisture Tight Seals , White , Small" brand: "rule" price: "414.85 DT" currency: TND in_stock: true reviews_count: 13 category: "Rule" url: https://www.desertcart.tn/products/4214077-40a-rule-a-matic-plus-bilge-pump-float-switch-12 store_origin: TN region: Tunisia --- # 12/24/32V multi-voltage compatibility Moisture-tight seals for ultimate water resistance Impact-resistant acrylic cover for debris protection 40A Rule-A-Matic Plus Bilge Pump Float Switch, 12, 24 or 32 Volt, Moisture Tight Seals , White , Small **Brand:** rule **Price:** 414.85 DT **Availability:** ✅ In Stock ## Summary > 🚤 Rule your bilge with confidence—powerful, precise, and built to last! ## Quick Answers - **What is this?** 40A Rule-A-Matic Plus Bilge Pump Float Switch, 12, 24 or 32 Volt, Moisture Tight Seals , White , Small by rule - **How much does it cost?** 414.85 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/4214077-40a-rule-a-matic-plus-bilge-pump-float-switch-12) ## 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 - • **Precision Pump Control:** Automatically shuts off at half-inch water level, preventing battery drain and pump overrun—smart efficiency for peace of mind. - • **Effortless Installation:** Flat-bottom design compatible with 3M 5200 adhesive and simple wiring means quick, hassle-free setup—get back on the water faster. - • **Unyielding Water Defense:** Moisture-tight seals ensure your float switch stays dry and reliable, even in the harshest bilge conditions. - • **Versatile Voltage Mastery:** Seamlessly powers your bilge pump at 12, 24, or 32 volts—adapt to any marine setup with confidence. - • **Built to Brave the Elements:** Rugged acrylic housing with impact-resistant cover guards against debris and jamming—durability you can trust. ## Overview The Rule 40A Rule-A-Matic Plus Bilge Pump Float Switch is a high-quality, US-made marine float switch designed for 12, 24, or 32-volt systems. Featuring moisture-tight seals and a rugged acrylic impact-resistant cover, it ensures reliable pump activation and protection against debris and jamming. Its precise shutoff at low water levels prevents battery drain, while the easy installation with adhesive compatibility makes it a trusted choice for boat owners seeking durability and performance. ## Description Rule 40A Rule-A-Matic Plus Bilge Pump Float Switch, 12, 24 or 32 Volt, Moisture Tight Seals , White , Small Review: It's just like the one that I took out.... - I bought this to replace an identical one in the bilge of our sailboat. It went into place with no problems. There's a flat spot on the bottom for you to apply your 3M 5200 adhesive, which is how my old one was attached. I cleaned the bilge really well, applied the adhesive, and put something heavy on top of the switch case. When I returned the next day, I hooked up the wires (easy) and it started right up. Unlike my old one, it shut down when the bilge level was drawn down to about a half-inch. Perfect. As boat maintenance goes, this was really simple, and I don't have to worry about a continually-running bilge pump bricking my battery. We'll mark this down as a win. Review: High quality and works as advertised - I always use Rule pumps and switches on my boat because I think they are best made and are the most reliable. SeaRay installs them originally. They cost more than most, but maybe it's because of the quality. You can easily sink your boat if a pump or switch fails. Even though I think they are priced high, it's worth the money knowing they are reliable. ## Features - Acrylic - Made in the USA - Sleek and rugged with a strong, fully integrated impact resistant cover to protect against debris and jamming ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000O8DA0K | | Best Sellers Rank | #15,195 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #18 in Boat Bilge Pumps | | Brand | Rule | | Brand Name | Rule | | Color | White | | Customer Reviews | 4.7 out of 5 stars 880 Reviews | | Flow Rate | 5678 Liters Per Hour | | Global Trade Identification Number | 00042237095633 | | Included Components | Rule 40A Rule-A-Matic Plus Bilge Pump Float Switch, 12, 24 or 32 Volt, Moisture Tight Seals | | Item Dimensions L x W x H | 4.87"L x 2.75"W x 2.75"H | | Item Type Name | Rule 40A Rule-A-Matic Plus Bilge Pump Float Switch, 12, 24 or 32 Volt, Moisture Tight Seals | | Item Weight | 6.4 Ounces | | Manufacturer | Rule | | Manufacturer Part Number | 40A | | Manufacturer Warranty Description | as listed | | Material | Stainless Steel | | Material Type | Stainless Steel | | Model Number | RFA-40A | | Power Source | electricity | | Product Dimensions | 4.87"L x 2.75"W x 2.75"H | | Product Style | Float Switch | | Specific Uses For Product | SportingGoods | | Style | Float Switch | | UPC | 042237095633 | | Unit Count | 1.0 Count | | Voltage | 32 Volts | ## Product Details - **Brand:** Rule - **Color:** White - **Global Trade Identification Number:** 00042237095633 - **Item Weight:** 6.4 Ounces - **Material:** Stainless Steel - **Maximum Flow Rate:** 5678 Liters Per Hour - **Power Source:** electricity - **Product Dimensions:** 4.87"L x 2.75"W x 2.75"H - **Style:** Float Switch - **Voltage:** 32 Volts ## Images ![40A Rule-A-Matic Plus Bilge Pump Float Switch, 12, 24 or 32 Volt, Moisture Tight Seals , White , Small - Image 1](https://m.media-amazon.com/images/I/41A9XkhDupL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Where is the built in test feature?** A: Hello Michael, The test lever is on the rear, left side near the wires. Regards, Xylem. **Q: How long are the lead wires** A: Hello, The wires on all of our Rule float switches are 28" long. Regards, Rule. **Q: I have an older version of this that has a turn able knob on the side. Any idea what this is used for?** A: Hello, The older float switch has a knob on the side so you can rotate and lift up the float inside to test the system. Regards, Xylem. **Q: Is the hole spacing (and/or general dimensions) the same as on the older mercury switch rule-a-matic plus model?** A: Hello Matthew, The new float switch is slightly different from the old mercury float switch. The mercury switch has a different hole pattern so you will only be able to use one of the holes from the old switch. Regards, Xylem. ## Customer Reviews ### ⭐⭐⭐⭐⭐ It's just like the one that I took out.... *by M***E on July 21, 2024* I bought this to replace an identical one in the bilge of our sailboat. It went into place with no problems. There's a flat spot on the bottom for you to apply your 3M 5200 adhesive, which is how my old one was attached. I cleaned the bilge really well, applied the adhesive, and put something heavy on top of the switch case. When I returned the next day, I hooked up the wires (easy) and it started right up. Unlike my old one, it shut down when the bilge level was drawn down to about a half-inch. Perfect. As boat maintenance goes, this was really simple, and I don't have to worry about a continually-running bilge pump bricking my battery. We'll mark this down as a win. ### ⭐⭐⭐⭐⭐ High quality and works as advertised *by G***0 on December 4, 2023* I always use Rule pumps and switches on my boat because I think they are best made and are the most reliable. SeaRay installs them originally. They cost more than most, but maybe it's because of the quality. You can easily sink your boat if a pump or switch fails. Even though I think they are priced high, it's worth the money knowing they are reliable. ### ⭐⭐⭐⭐⭐ Great pump float *by G***. on April 6, 2026* When I replaced my rule 1500 pump that lasted 24 years. I replaced the float as well that still worked. I think the original was a mercury switch it had to go. The new is actually a switch ## Frequently Bought Together - Rule 40A Rule-A-Matic Plus Bilge Pump Float Switch, 12, 24 or 32 Volt, Moisture Tight Seals , White , Small - 3M Marine Adhesive Sealant Fast Cure 5200 (06535) Permanent Bonding and Sealing for Boats and RVs Above and Below the Waterline Waterproof Repair, White, 1 fl oz Tube - 3M TALC Marine Adhesive Sealant Fast Cure 4200 (05260) – Semi-Permanent Flexible Adhesive Sealant for Boats and Marine Applications – White – 3 Ounces --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/4214077-40a-rule-a-matic-plus-bilge-pump-float-switch-12](https://www.desertcart.tn/products/4214077-40a-rule-a-matic-plus-bilge-pump-float-switch-12) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-20*