Attwood Float Switch With Cover 12V/24V | 4201-7
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The Attwood Float Switch With Cover 4201-7 converts a compatible bilge pump into an automatic bilge pump system. It uses a compact mechanical float switch that activates the pump when bilge water reaches approximately 2", helping remove water without needing manual switch operation.
Key Features
- Attwood automatic float switch with cover
- Manufacturer part number: 4201-7
- Voltage: 12V / 24V DC
- Maximum load: 12A at 12V or 6A at 24V
- Actuates pump at approximately 2" water level
- Compact low-profile design
- Mounts on horizontal surfaces or up to a 24° angle
- Integral cover helps reduce bilge-slosh cycling and debris interference
- Sealed switch mechanism resists moisture, fume ignition, and electrical shock
- Non-mercury mechanical switch design
- Includes convenient test knob
- Can install independently or onto rear slots of Attwood V-Series pump brackets
- Approximate dimensions: 3" H x 3-1/4" W x 4-3/4" L
- UPC reference: 022697420176
Product Compatibility
Designed for use with compatible marine bilge pumps drawing up to 12 amps at 12V DC or 6 amps at 24V DC. Suitable for boats needing automatic bilge pump activation in 12V or 24V systems.
Fitment Notice
Confirm pump current draw, system voltage, mounting space, and bilge layout before ordering. This switch should be mounted where the float can move freely and where debris will not prevent proper operation.
When This Part Needs Replacement
Replace the float switch if the bilge pump no longer activates automatically, the float sticks, the test knob does not operate the pump, the cover is damaged, wiring is corroded, or the switch has been contaminated by debris or bilge residue.
Installation Notes
Mount the switch securely in the bilge, either independently or with compatible Attwood V-Series pump brackets. Wire according to the pump and vessel electrical instructions, using marine-grade connections and proper circuit protection. Test automatic operation and manual/test operation before returning the boat to service.
Alternate/Superseded Part Numbers
Related references include:
- 4201-7
- 42017
- 4201 7
- ATT 4201-7
- UPC 022697420176
Parts Desk Insight
A float switch is only as reliable as its mounting location. Keep it low enough to detect bilge water early, but clear of debris, wiring, and loose gear so the float can move freely every time.
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
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.