Rule

Rule-A-Matic® Float Switch

SKU: 31508 · UPC: 042237095435 · MPN: 35A
4.7 · 0 reviews
Authorized dealer36% off
$35.99
$56.99Save $21.00
or 4 payments of $8.99 with Affirm
In stock — Ships today Pickup available · NVN Marine (FL)
SAME-DAY SHIPPING · 14:23 EST
Order in time, ships today
Ships from your nearest warehouse. UPS Ground 2–4 business days.
Free shipping
Orders $500 or more
Free returns
Within 30 days
Same day shipping
Order before 3 PM (EST)
Ask anything
We're here to help
$35.99
02 · Overview

Rule-A-Matic® Float Switch — Product description

A standard bilge pump operates by a control switch that senses water and activates the pump. Rule’s Float Switches offer outstanding performance. We use extra-large float chambers for increased buoyancy and detachable mounting bases that make them easier to install and remove for cleaning and inspection. Rule also produces the ECO-switch, which operates when rising bilge water levels increase air pressure. All switching gear is located outside of the bilge in a sealed, compact unit.

Rule 35A Attributes

  • Compatibility: Rule ® Bilge Pumping System
  • Voltage Rating: 12 To 24 Volt

Rule 35A Features & Benefits

  • Patent Pending Snap Switch Design
  • Highly Abrasion Resistant Marine Grade Blocked Wire
  • Exclusive Moisture Tight Seals
  • Environmentally Friendly Mercury Free Design
  • Limited 3 Year Warranty

Rule-A-Matic® Float Switch

Year after year, the Rule-A-Matic has been the switch of choice for boaters the world over. Our latest design now includes a removable base for easy cleaning and servicing, a mercury free snap switch tested to over one million cycles and marine grade blocked wire. Designed for pumps drawing up to 14 Amps. Now includes a 2 year warranty.

WARNING: This product can expose you to chemicals including STYRENE which is known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov.



The standard bilge pump is operated by a control switch that senses the water and activates the pump. Rule Industries' Rule-A-Matic float switch with 12-24 VDC can provide excellent...
SKU: NVN-31508
MPN: 35A
UPC: 042237095435
03 · The numbers

Technical specifications

BrandRule
ModelRule-A-Matic® Float Switch
SKU / MFR#31508

Set product metafields under specs.* to populate this table.

04 · Before you buy

Frequently asked questions

No questions yet. Got one? Drop us a line.

05 · Customer voices

Customer reviews