ISURE MARINE 12V Automatic Submersible Bilge Pump 1200GPH — Built-In Float Switch, Corrosion-Resistant

The ISURE MARINE 12V 1200GPH Automatic Submersible Bilge Pump is a compact, fully submersible marine pump with a built-in float switch for automatic water removal on boats.

This heavy-duty bilge pump delivers up to 1200 gallons per hour (GPH) from a 12V supply and is designed for reliable, low-maintenance operation in small craft. Its water-cooled motor, corrosion-resistant materials and anti-airlock design make it suitable for routine bilge pumping, emergency water removal and continuous use in harsh marine environments. The integrated float switch eliminates the need for an external sensor and prevents unnecessary battery drain by only running when water reaches the activation level.

How does the built-in float switch improve convenience and safety?

The internal float switch automatically turns the pump on as water rises and off when the bilge is clear, removing the need for manual monitoring or separate float installation. That automation reduces the chance of unnoticed flooding and conserves battery power by preventing idle run time.

• Automatic on/off operation when water reaches the switch level
• No external wiring or separate float switch required
• Prevents continuous power draw when bilge is dry
• Snap-off strainer for easy cleaning and reduced clogging

What are the pump’s electrical and performance specifications?

This model runs from a 12V DC source with a rated flow of 1200 GPH and a typical current draw of approximately 3.5A. It offers a maximum head around 2.5 meters (about 8.2 feet), making it suitable for most small to medium-size boat bilges and deck drains when installed correctly.

• Flow rate: 1200 GPH (gallons per hour)
• Voltage: 12V DC; Current: 3.5A
• Maximum head: 2.5 meters
• Outlet diameter: 28.5 mm (1-1/8") and 1 meter wire lead

What construction features ensure long life and corrosion resistance?

The pump uses a water-cooled motor with a stainless steel shaft and high-impact thermoplastic housing to resist marine corrosion and shock. Moisture-resistant seals and an anti-airlock design reduce wear and minimize the chance of motor damage from intermittent operation.

• Stainless steel shaft for corrosion protection and strength
• Thermoplastic ABS housing resists impacts and UV exposure
• Water-cooled motor and moisture-tight seals for extended life
• Anti-airlock design improves reliability after intermittent dry running

How easy is it to install and maintain on a small boat?

Installation is straightforward: mount the pump in a low point of the bilge, connect the 1 meter wire lead to a fused 12V circuit, and route discharge hose to a through-hull or deck fitting with the 28.5 mm outlet. Routine maintenance is simple—remove and clean the snap-off strainer to clear debris, and periodically inspect seals and wires.

• Compact dimensions: 155 × 90 × 115 mm for flexible mounting
• Snap-off strainer for quick debris removal and cleaning
• Plug-and-play wiring with clear polarity marking expected
• Works as primary or backup bilge pumping solution

Who is this for? The ISURE MARINE 12V 1200GPH Automatic Submersible Bilge Pump suits boat owners who want a dependable, low-maintenance pump with automatic operation. It’s ideal for small-to-medium recreational boats, tenders, fishing boats, and as a backup or auxiliary bilge pump on larger vessels. Choose this pump if you need a compact, corrosion-resistant unit that activates only when needed and is easy to install and service.