Rule 37A Automatic SuperSwitchView all products in Bilge Pump Accessories #:  24025
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Rule 37A Automatic SuperSwitch

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Free Shipping This Item qualifies for Free Shipping on orders over $99! More Info...

Free Davis Deluxe Boater's Knife with $300 order

Binnacle Gift Cards and Mustang items exempt. Website orders only. One Free item per customer/household. Ends Midnight Sunday Apr. 21   #24025
Brand:  Rule Pumps
MFG Part#:   37A
Works Great With...
Rule 25DA 500 GPH Bilge Pump
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Rule 37A Automatic SuperSwitch

Backed by a 5 Year Warranty, the non-mercury SuperSwitch™ is designed for the toughest applications.

The Rule Automatic SuperSwitch is a heavy-duty float switch that converts any bilge pump to automatic operation.

Heavy-duty contacts make this an ideal float switch for pumps drawing up to 20 Amps. It turns the pump on when the water level reaches 2" (51 mm) and turns the pump off when the water level drops to 3/4" (19 mm)

The design includes highly abrasion-resistant marine grade 14 AWG "blocked wire", a larger float for increased buoyancy, a removable base for easy servicing and a snap switch tested to over one million cycles.

  • Voltage: 12V, 24V DC, and 32V DC
  • Max Amps:
    • 12V: 20A
    • 24V: 10A
    • 32V: 6.5A
  • Wire Length: 28"
  • Dimensions: 5" L x 2" W x 2" H (127 x 51 x 51 mm)
NOTE: This Switch should be fused with the recommended fuse size for the Rule pump to which it is connected. Not to be used with 110V applications.

  Rule-a-Matic Float Switch Installation Instructions

  Rule-a-Matic Float Switch Technical Datasheet

Share your knowledge of this product with other customers... Be the first to review this product Shipping FAQ

Q. Do you offer Free Shipping?
A. We have free ground shipping via UPS or Canada Post within Canada on most orders of $99 or more (pre-tax).

Q. What do you mean by most orders?
A. Some items are exempt from this offer and are indicated on the product page. Exempt items are usually bulky or heavy items such as buoys. Over 98% of the items on qualify for the free shipping offer.
To see what your shipping charge (if any) will be you can add the item(s) and quantities to the shopping cart and you will see a shipping cost calculator

Q. Where do you ship from?
A. We ship from Halifax, NS

Q. What is the delivery time?
A.  NS, NB, PE: 1 - 2 business days,
      ON, QC, NL: 2- 4 business days
      MB, SK, AB: 4-5 business days
      BC: 5-7 business days
When your order ships you will be emailed a tracking number which will give you the scheduled delivery date

Q. Do you offer Express Shipping?
A. We offer Express Shipping on some orders depending on the items ordered and the delivery address. If Express shipping is available for your order you will see the option on the checkout page. If you do not see the Express option and you want Express shipping please send an email and we will provide you with a quote (

Q. Do you require a signature on delivery?
A. We sometimes add a signature requirement especially if it is a high value package

Please Note:
Very Remote areas are exempt from Free Shipping offer. These are typically remote northern areas. Nunavut as well as many parts of the Yukon and NWT are exempt from free shipping

Money Back Guarantee
Guarantee You may return your purchase to us (with a return authorization number - use this form) within 30 days and we will refund the purchase price of the product. Items which are cut to order (rope, wire etc), software, chart cards and printed materials (paper charts, books) are not returnable.

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