SKU: CW31517
UPC: 042237095497
MPN: 37A
The Rule SuperSwitch® Float Switch (Model 37A) is a non-mercury float switch engineered for demanding marine applications where reliable automatic pump control is essential. Designed to handle pumps drawing up to 20 amps, this switch activates based on water level changes, making it the go-to choice for bilge pumping, ballast systems, and live well automation on fishing boats and offshore vessels.
Key specifications reflect Rule's commitment to saltwater durability. The switch features marine-grade 14-gauge blocked wire designed to resist corrosion in salt-air environments where standard wiring fails. A larger float provides increased buoyancy, ensuring responsive operation even in heavy sea conditions or when the float accumulates algae or mineral deposits. The snap-switch mechanism handles the electrical load of high-amperage pumps without hesitation. The removable base simplifies servicing and replacement without breaking plumbing connections—critical when you're on the water and maintenance time is limited. Backed by a 5-year warranty, the SuperSwitch eliminates the mercury safety concerns of older designs while maintaining proven reliability.
This float switch is ideal for recreational anglers maintaining smaller fishing boats as well as serious offshore operators running larger vessels with complex bilge and ballast systems. Weekend boaters appreciate the set-and-forget operation; commercial or tournament crews depend on the 20-amp capacity to handle multiple pumps simultaneously. Anyone replacing an aging or mercury-based float switch will find the SuperSwitch a direct, modern upgrade that restores confidence in automatic water management systems.
Float switches are standard hardware on modern marine vessels, and the SuperSwitch represents the current industry standard for non-mercury automatic level control. Its combination of heavy-duty electrical rating, corrosion-resistant components, and field-proven design makes it the benchmark for both original equipment and aftermarket replacement applications in the boating community.
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