Attwood 4201-7 Automatic Float Switch with Cover, 12/24-Volt Bilge Pump Switch

The Attwood 4201-7 Automatic Float Switch converts a manual bilge pump into a fully automatic system, so the pump activates on its own whenever water accumulates in the bilge. Its compact design mounts on any surface from horizontal up to a 24-degree angle, making it adaptable to a wide range of bilge layouts. A reliable mechanical switch actuates the pump motor at a 2-inch water level, keeping the bilge clear without constant monitoring.

The integral cover adds protection against debris and dampens bilge sloshing to reduce unnecessary pump cycling, and a convenient test knob extends from the cover so the switch can be checked for proper operation at any time. Unlike wire leads on some competitive float switches that flex or hinge with the float, the leads on the 4201-7 are fixed for added durability. The sealed switch mechanism resists moisture, fume-ignition, and electrical shock, and the unit is marine ignition protected and RoHS compliant.

The switch is CE rated for both 12- and 24-volt systems, with a maximum amp draw of 12 amps at 12 volts DC or 6 amps at 24 volts DC, and comes with a 36-inch wire connection for flexible installation. It contains no mercury, a substance classified as a health hazard and Persistent Toxic Substance in many states. The 4201-7 is built from stainless steel components for long-term reliability in a marine environment.

Specifications

• Brand: Attwood
• Manufacturer Part Number: 4201-7
• Operating Voltage: 12 and 24 Volts DC
• Maximum Amp Draw: 12 Amps at 12 Volts DC, 6 Amps at 24 Volts DC
• Wire Length: 36 inches
• Mounting Angle: Up to 24 degrees from horizontal
• Actuation Level: 2 inches of water
• Dimensions: 5 1/4 inches L x 3 7/8 inches W x 2 7/8 inches H
• Weight: 0.6667 pounds
• Material: Stainless Steel
• Switch Type: Float Switch
• Contact Type: Normally Open
• Certification: CE rated, marine ignition protected, RoHS compliant
• Mercury Content: None
• UPC: 022697420176
• Warranty: 90 days

Frequently Asked Questions

What does the Attwood 4201-7 float switch do? The Attwood 4201-7 converts a manual bilge pump into a fully automatic system by actuating the pump motor once the water level in the bilge reaches 2 inches.

Will the 4201-7 work with my existing bilge pump? Yes, the 4201-7 is designed to work with non-automatic bilge pumps drawing 12 amps or less at 12 volts, converting them to automatic operation.

What is the maximum amp draw of this float switch? The maximum amp draw is 12 amps at 12 volts DC or 6 amps at 24 volts DC.

Can the float switch be mounted at an angle? Yes, the Attwood 4201-7 mounts on any surface from horizontal up to a 24-degree angle.

Does the 4201-7 include a cover? Yes, this model includes an integral cover that adds protection, dampens bilge sloshing to reduce pump cycling, and helps prevent debris interference.

What voltage systems is this switch rated for? The 4201-7 is CE rated for both 12-volt and 24-volt DC marine electrical systems.

How long is the wire lead on the 4201-7? It comes with a 36-inch wire connection for installation flexibility.

At what water level does the switch activate the pump? The mechanical switch actuates the pump motor once water in the bilge reaches a 2-inch level.

Does the Attwood 4201-7 contain mercury? No, the 4201-7 contains no mercury, a substance classified as a health hazard and Persistent Toxic Substance in many states.

What material is the float switch made of? The 4201-7 is constructed with stainless steel components for durability in a marine environment.

Is the 4201-7 ignition protected? Yes, the Attwood 4201-7 is marine ignition protected and RoHS compliant.

What are the dimensions of the 4201-7 float switch? The 4201-7 measures 5 1/4 inches long by 3 7/8 inches wide by 2 7/8 inches high.