Johnson Pump
Electro Magnetic Switch - Johnson Pump
Price: $17.80
Save: $5.19
(22% Off $22.99)
Part # 36152
2nd Day Air for $2.99 More Eligible
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Rough seas? This automatic electro-magnetic float switch from Johnson Pump is your best bet to quickly remove water from the bilge. It automatically activates the pump when your bilge has 2" of water and deactivates it when water level is at 3/4".Meaning, one less worry when you’re tackling the sea.

  • False start prevention
  • Encapsulated electronics
  • Automatically starts and stops the pump

This compact mechanical switch offers a combination of reliable solid state electronics and a sealed float switch. It is designed specifically for 12V systems and features false start prevention. Made of high-impact plastic, this switch has encapsulated electronics for safe use and improved resistance to vibrations and shocks. It also offers a high degree of ingress protection adding up to the product's dependability. What's more, this switch is environment friendly and doesn’t have mercury!

Features of Johnson Pump Automatic Electro-Magnetic Float Switch

  • Reliable solid state electronics
  • False start prevention
  • No mercury
  • High-impact plastic
  • Encapsulated electronics
  • Activates pump at 2" water level
  • Deactivates pump at 3/4" water level

Manf. Part # 36152
Can be used with 12 V systems
Maximum current: 15 amps

Average Customer Review for Electro Magnetic Switch - Johnson Pump
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Good price, Fast delivery, Easy install
by C from Ft. Myers, Florida on July 02, 2015
After 15 years my original pump finally gave up the ghost. I definitely recommend this Johnson Pump because of its high quality and affordability. Got the pump installed, my boat summerized and was on the water all in one morning.
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only pump to fit the sump box
by Peter from Riverview, Florida on November 08, 2012
I purchased a sump box, pump and switch a few years ago for my aft shower and rear sump. Nice one piece solution for a cramped space. Unfortunately the switch already failed. I attempted to replace with another switch and found this is the only switch that fits the box. Some other small ones will fit the box, but are made so the water has to be several inches deep before activating. If this switch holds up I will be satisfied with the system. If not, I'm going to have to invest in another sump system altogether. I don't like having no options for switch replacement. On a positive note it works great out of the box.
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The answer for float switches
by James from Angleton, Texas on October 08, 2011
Finally a switch that works. It does not clog up like the paddle float switch. Excellent value.
(8 of 9 people found this review helpful)
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Love this switch
by James from Angleton, Texas on October 06, 2011
This switch works better than I expected. I'll order 2 more for my other pumps
(1 of 2 people found this review helpful)
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Love the concept
by James from Angleton, Texas on July 25, 2011
I will respond with better data after I get it installed. Old folks don't move so fast and there is so much to do.
(1 of 3 people found this review helpful)
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Does the dash on/off power and pump switches need to be on when the boat is docked for this switch to work?
If you are wiring it up to your panel then yes you will need it on for the bilge pump to actually pump the water.

Will this pump work with Johnson Pump Low Boy part# 33703.?
Yes. It can be used with 12V systems.

What is the need for the ground wire on the switch?
Johnson Pump confirms it is to ground it to the battery.

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