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50 years of Trusted Marine Service

Float Switch FS-40 - Automatic Bilge Pump Switch - 12V/24V DC - 10A - with Test Button

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Original price $51.99
Original price $51.99 - Original price $51.99
Original price $51.99
Current price $38.42
$38.42 - $38.42
Current price $38.42

Free returns on all eligible orders

You have 30 days to request a return. All sale items are final sale.

Premium FS-40 Float Switch - Automatic Bilge Pump Control

This professional-grade FS-40 float switch provides automatic bilge pump control for pumps rated up to 10A. The switch activates or deactivates the bilge pump based on water level, eliminating the need for manual monitoring. Constructed from tough ABS plastic with an integrated test button, this float switch ensures reliable, hands-free bilge pump operation for years of service.

Key Features

  • Automatic Operation: Activates bilge pump when water level rises, deactivates when water is pumped out
  • 10A Capacity: Handles bilge pumps rated up to 10 amps for most marine applications
  • 12V/24V Compatible: Works with both 12V and 24V DC electrical systems
  • Test Button: Integrated test button allows instant verification of switch operation without adding water
  • ABS Construction: Tough ABS plastic housing ensures long life in harsh marine environments
  • Float Design: Rising water forces float upward to activate switch, falling water allows float to drop and deactivate
  • Easy Installation: Simple wiring and mounting for quick setup
  • Reliable Operation: Proven design provides years of automatic bilge pump control
  • 0.1882kg Weight: Lightweight for easy installation in bilge areas

Applications

Essential automatic control for bilge pump systems on powerboats, sailboats, and commercial vessels. The float switch eliminates the need to manually monitor water levels and operate the bilge pump, providing automatic protection against water accumulation in the bilge. The switch activates the pump when water reaches a preset level, then deactivates it once the water is pumped out.

Ideal for automatic bilge pump systems, backup pump control, and any application requiring hands-free bilge water management. The test button allows you to verify proper operation at any time without adding water to the bilge, ensuring the system is ready when needed. The tough ABS construction withstands the harsh bilge environment including oil, fuel, and saltwater exposure.

Shipping information

In-stock and OEM parts: ship same or next business day.

Locally warehoused items: ship within 3–4 business days.

Special-order items: timeline confirmed after order.

Returns & warranty

Returns & Satisfaction Guarantee

We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.

If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.

To qualify for a return:


  • Item must be in new, unused condition

  • Product must be in its original packaging

  • All parts, components, hardware, manuals, and accessories must be included

  • Packaging must be undamaged and suitable for resale

Important:

Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.

We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.

For return authorization, please contact our support team before shipping anything back.

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