Rule Industries 37A SuperSwitch Mercury-Free Marine Bilge Pump Float Switch

The Rule Industries 37A SuperSwitch is a heavy-duty, mercury-free bilge pump float switch built for automatic on/off bilge pump control in the most demanding marine environments. Engineered to handle bilge pumps drawing up to 20 amps, this reliable snap-action switch activates when water reaches 2" and shuts off once the level drops to 3/4", keeping your bilge dry with minimal cycling.

Featuring an environmentally responsible, mercury-free snap switch mechanism tested to over one million use cycles, the 37A SuperSwitch delivers dependable performance for commercial and recreational boaters alike. The switch is ignition protected and carries CE approval, making it suitable for use in fuel-vapor environments.

Key Features:

• Mercury-free snap switch design — tested to over 1 million cycles for long-term reliability
• Larger float for increased buoyancy and reduced rapid on/off cycling
• Marine-grade 14 AWG blocked wire — 28" leads with moisture-tight seal and grommet for strain relief and superior corrosion resistance
• Removable snap-in base for easy installation, cleaning, and servicing
• Multi-voltage compatible — works with 12V, 24V, and 32V DC systems
• 20-amp capacity at 12V (10A at 24V, 6.5A at 32V)
• Can also be used to operate high water alarm systems
• Ignition protected with CE approval
• 5-year limited warranty

Specifications:

• Voltage: 12 / 24 / 32 VDC
• Max Amp Draw: 20A (12V), 10A (24V), 6.5A (32V)
• Wire Size: 14 AWG / Wire Length: 28"
• Dimensions: 5" L x 2" W x 2" H
• UPC: 042237095497

The Rule 37A SuperSwitch is a trusted choice among commercial fishermen and serious boaters who demand a float switch that performs reliably when it matters most.