--- product_id: 318338577 title: "Rule Rule-A-Matic Plus Float Switch, Covered, Moisture Tight Seals" brand: "rule" price: "£64.06" currency: GBP in_stock: true url: https://www.desertcart.co.uk/products/318338577-rule-rule-a-matic-plus-float-switch-covered-moisture-tight store_origin: GB region: United Kingdom --- # Activates at 2" water level Supports pumps up to 20A Impact-resistant cover Rule Rule-A-Matic Plus Float Switch, Covered, Moisture Tight Seals **Brand:** rule **Price:** £64.06 **Availability:** ✅ In Stock ## Summary > 🌊 Stay dry, stay ahead — the ultimate float switch for pros who demand precision. ## Quick Answers - **What is this?** Rule Rule-A-Matic Plus Float Switch, Covered, Moisture Tight Seals by rule - **How much does it cost?** £64.06 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/318338577-rule-rule-a-matic-plus-float-switch-covered-moisture-tight) ## 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 - • **Rugged Protection:** Fully integrated impact-resistant cover shields against debris and jamming for uninterrupted performance. - • **Smart Water Control:** Automatically activates pumps at 2" and shuts off at 3/4" water level for precise flood management. - • **Built-In Test Feature:** Easily verify functionality without disassembly, ensuring reliability when it matters most. - • **Versatile Application:** Compatible with pumps up to 20 amps and high water alarm systems for comprehensive water level monitoring. - • **Marine-Grade Durability:** 14 gauge highly abrasive resistant stainless steel wire built to withstand harsh environments. ## Overview The Rule Rule-A-Matic Plus Float Switch is a compact, stainless steel device designed for reliable water level control in marine and plumbing applications. Featuring a moisture-tight, impact-resistant cover and marine-grade wiring, it supports pumps up to 20 amps and activates at precise water levels to prevent flooding or trigger alarms. Its built-in test feature ensures easy maintenance and dependable operation. ## Description Rule Rule-A-Matic Plus Float Switch, Covered, Moisture Tight Seals ## Features - Sleek and rugged with a strong, fully integrated impact resistant cover to protect against debris and jamming - 14 gauge highly abrasive resistant marine grade wire - Built-in test feature - Designed for pumps drawing up to 20 amps - Will turn the pump on when the water level reaches 2" (51mm) and will turn the pump off when water level falls to 3/4" (19mm).Can also be used to operate high water alarm systems ## Technical Specifications | Specification | Value | |---------------|-------| | Color | White | | Size | S | | Style | Float Switch | | Height | 6 inches | | Length | 6 inches | | Weight | 0.5 Pounds | | Width | 6 inches | | Material Type | Stainless Steel | | Number of Items | 1 | | Power Source | electricity | | Sport | Boating | | Included Components | Rule 40A Rule-A-Matic Plus Bilge Pump Float Switch, 12, 24 or 32 Volt, Moisture Tight Seals | | Batteries Included? | No | | Brand | Rule | | Department | Switch | | Manufacturer | Rule | | Item model number | RFA-40A | | Product Dimensions | 22.86 x 15.24 x 10.16 cm; 181.44 g | | ASIN | B000O8DA0K | ## Product Details - **Brand:** Rule - **Colour:** White - **Material:** Stainless Steel - **Style:** Float Switch - **Product dimensions:** 12.4L x 7W x 7H centimeters ## Images ![Rule Rule-A-Matic Plus Float Switch, Covered, Moisture Tight Seals - Image 1](https://m.media-amazon.com/images/I/41A9XkhDupL.jpg) ## Available Options This product comes in different **Style** 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. ## 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.co.uk/products/318338577-rule-rule-a-matic-plus-float-switch-covered-moisture-tight](https://www.desertcart.co.uk/products/318338577-rule-rule-a-matic-plus-float-switch-covered-moisture-tight) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-18*