

🌊 Stay dry, stay ahead — the ultimate float switch for pros who demand reliability!
The Rule Rule-A-Matic Plus Float Switch is a robust, moisture-tight bilge pump controller designed for 12, 24, or 32 Volt systems. Featuring a 20 amp capacity, impact-resistant cover, and marine-grade wiring, it activates pumps precisely at 2" water level and shuts off at 3/4", ensuring efficient water management and protection against debris and jamming. Ideal for professional boaters and marine environments, it includes a built-in test feature for easy maintenance and reliability.







| ASIN | B000O8DA0K |
| Best Sellers Rank | 277,726 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 222 in Boat Bilge Pumps |
| Brand | Rule |
| Colour | White |
| Country of Origin | Vietnam |
| Customer Reviews | 4.6 out of 5 stars 815 Reviews |
| Flow Rate | 5678 Litres 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 | 12.4L x 7W x 7H centimetres |
| 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 |
| Item height | 4 inches |
| Manufacturer | Rule |
| Material | Stainless Steel |
| Model Number | RFA-40A |
| Power source | electricity |
| Product Style | Float Switch |
| Product dimensions | 12.4L x 7W x 7H centimetres |
| Style | Float Switch |
| UPC | 042237095633 |
| Unit Count | 1.0 count |
| Voltage | 32 Volts |
K**E
Replacement required
I had to buy this as a replacement. The old unit would rise on the water level and as the float dropped it would not turn off the pump. If they were to make the float valve easy access then regularly maintenance could have been carried out to clear scale build up on float switch . Easy to fit . Comes with a lengthy power lead
B**P
Boat bulge float
Just as listed
J**K
prompt delivery
This item was a replacement for a previous unit. It arrived promptly in Sardinia and performed exactly as I had expected
Trustpilot
2 weeks ago
3 weeks ago