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Johnson Pumps 36303 Ultima Automatic Bilge Pump Switch

Manufacturer

Johnson Pumps

<p>For more than eight decades, Johnson Pumps has been engineering dependable marine pumping solutions that sailors, boaters, and commercial vessel operators trust when reliability matters most. As part of the SPX FLOW family, this industry-leading manufacturer has built a reputation for designing pumps specifically optimized for the demanding marine environment, where saltwater corrosion, constant vibration, and mission-critical performance requirements separate exceptional products from ordinary ones.</p><h3>Marine-Specific Engineering Excellence</h3><p>What sets Johnson Pumps apart is their unwavering commitment to marine-grade construction and design. Unlike generic pumps adapted for marine use, every Johnson product is engineered from the ground up to withstand the unique challenges of life on the water. Their pumps feature corrosion-resistant materials, sealed electronics to prevent moisture intrusion, and robust housings designed to handle the continuous stress of marine applications. This marine-first philosophy has made Johnson Pumps the go-to choice for everyone from weekend recreational boaters to professional maritime operators.</p><h3>Comprehensive Marine Pumping Solutions</h3><p>Johnson Pumps offers one of the industry's most extensive product portfolios. Their <a href="/11265-johnson-pumps-circulation-air-conditioning-pumps-200261">circulation and air conditioning pumps</a> deliver efficient coolant flow for engine cooling systems and climate control applications, ensuring vessels maintain optimal operating temperatures even during extended voyages. For onboard fresh water delivery, Johnson's <a href="/11265-johnson-pumps-water-pressure-system-pumps-201165">water pressure system pumps</a> provide consistent, reliable pressure for galleys, heads, and shower facilities, bringing home-like convenience to life aboard. When it comes to keeping decks, equipment, and catches clean, their <a href="/11265-johnson-pumps-wash-down-pumps-systems-201156">washdown pumps and systems</a> deliver powerful, on-demand water flow that makes maintenance and cleanup tasks quick and efficient.</p><h3>Built for Reliability When It Matters Most</h3><p>Beyond their diverse product range, Johnson Pumps has earned customer loyalty through exceptional durability and performance longevity. Their automatic bilge pump systems feature smart switching technology that activates instantly when water is detected, providing peace of mind whether you're aboard or away from your vessel. Johnson's commitment to quality extends beyond the products themselves—their pumps are backed by comprehensive documentation, readily available service parts, and a support network that understands the marine industry's unique needs. For boat owners who demand pumps that perform reliably season after season, Johnson Pumps continues to set the standard for marine pumping excellence.</p>

Part Number

36303
06/01/2036 1:58 AM
Sale Price

$43.08

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Johnson Pumps 36303 Ultima Switch is a highly reliable solid-state automatic bilge pump switch designed for marine applications. This advanced switch uses patented Mirus field effect detector cells that produce micro-electrical fields to detect disruptions caused by water and fluids, ensuring automatic pump activation when needed.

Advanced Solid-State Technology:

  • Patented Mirus field effect detector technology detects changes in dielectric constant
  • Totally sealed detector cells never contact water, eliminating corrosion issues
  • No moving parts, no mercury, and no exposed sensors for maximum reliability
  • Not affected by oil, grease, diesel fuel, gasoline, or foreign debris in the bilge
  • Digital technology ensures consistent performance in harsh marine environments

Operating Specifications:

  • Activates bilge pump when fluid level reaches 2 inches
  • Deactivates pump when water level drops to 3/4 inch
  • Built-in delay (3-8 seconds) prevents false starts
  • Rated for pumps up to 20 amps at 12V or 10 amps at 24V
  • Compatible with all Johnson Pump submersible bilge pumps

Additional Features:

  • Unique 3-way switch disables piezo alarm while keeping warning LED lit
  • Environmentally sensitive design with no hazardous materials
  • Easy installation with included instructions
  • Compact design fits in tight bilge spaces

The Johnson Pumps Ultima Switch provides peace of mind for boat owners by ensuring reliable automatic bilge pump operation without the common failure points associated with traditional float switches. Its ability to ignore petroleum products while still detecting water makes it ideal for marine bilge applications.

Products specifications

Dimensions

2 3/8" Height x 2 11/16" Length x 1 1/8" Diameter

Type

Electronic Float

Warranty Details

Three Years

Great price and shipping was far better than other sites.

went smooth

Very good prices and quick, easy ordering experience.

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Was easy to find an the cheapest I seen also shipped pretty quik

Grate

Great

Fast and Easy

Good

Found good price and reasonable shipping. Thanks. H

Awesome!

GOOD EXCEPT NEED BETTER METHOD TO SEARCH PRODUCT

Easy, would use again! Thanks, Fast Shipping!

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