SEAFLO 25A Electromagnetic Bilge Pump Float Switch 12V 24V 32V

Automatic water-level control for manual bilge pumps

An enclosed, mercury-free electromagnetic float switch for converting a separate non-automatic bilge pump to water-level-controlled operation. The protective strainer helps shield the moving mechanism from debris, while the quick-attach base supports cleaning and maintenance.

Technical specifications

Applications and compatibility

• Designed to control a separate manual bilge pump drawing no more than 25A.
• Suitable for 12V, 24V and 32V DC bilge systems on motorboats, yachts, RIBs, fishing boats and workboats.
• The switch rating must exceed the pump’s maximum/stall current, not merely its normal running current.
• For high-load pumps or complex alarm/control circuits, use a correctly rated relay and follow the vessel wiring design.

Installation and package contents

• Mount on a level surface beside the pump at the required activation height, clear of hoses, wiring and moving equipment.
• Keep the strainer accessible and test operation by raising the float before relying on the system.
• Use tinned marine cable, waterproof connections and circuit protection sized for the pump circuit; follow the supplied wiring diagram.
• Package contains one SEAFLO electromagnetic float switch with protective housing/base and attached leads. Bilge pump, relay, fuse, panel switch and connectors are not stated as included.

Frequently asked questions

Does this item include a bilge pump?

No. It is a water-level switch for controlling a separate non-automatic pump.

Can it switch any 25A pump directly?

Only if the pump’s maximum current and the full circuit design remain within the 25A switch rating; otherwise use a suitable relay.

Does it contain mercury?

No. SEAFLO specifies a mercury-free electromagnetic design.

Will it work on 12V and 24V boats?

Yes, and it is also listed for 32V DC systems when wired and protected correctly.