Rule SuperSwitch Model 37A – Reliable Marine Float Switch for Bilge Pump Systems

Advanced Water Level Control with Rule SuperSwitch Model 37A

Engineered for marine durability, the Rule SuperSwitch Model 37A is the ultimate float switch solution for dependable, automatic bilge pump operation. With its high-volume capacity, moisture-tight seals, and mercury-free operation, this rule super switch ensures your watercraft remains dry and secure—whether you’re cruising offshore or moored at the dock.

Rule Super Switch Model 37A – Fast-Acting, Durable, and Easy to Maintain

Rule super switch is built with a larger, more buoyant float that reacts quickly to rising water levels. This reduces unnecessary ON/OFF cycling, improving overall pump efficiency. Designed for boats and watercraft of all types, this rule super float switch supports bilge pumps drawing up to 20 amps and is compatible with 12V, 24V, and 32V systems.

Key Features:

• Quick-Response Float for efficient activation

• 28″ 14-gauge Heavy-Duty Wires for better current flow

• Mercury-Free Contacts for safer, eco-friendly operation

• Easy Maintenance with a removable float for cleaning

• Optional Fuse Holder based on system needs

• Moisture-Tight Seals to prevent internal corrosion

• Mechanical AgSnO₂ Activation with high reliability

• 5-Year Warranty for long-term peace of mind

With its compact design (5″ x 2 1/8″ x 2 5/8″), the rule super switch float switch fits easily in most bilge areas and is engineered to perform even in harsh, high-moisture environments.

Reliable Installation and Compatibility

The rule super switch installation process is simple for professionals and DIYers alike. Whether replacing an older float switch or wiring a new bilge system, this unit is compatible with a wide range of pumps. Proper rule super switch wiring ensures optimal performance and long service life.

Need Other Marine Switches or Pump Accessories?

Explore our full range of marine float switches and bilge pump accessories, including other models and compatible bilge pump systems, to upgrade your vessel’s water management system.