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Troubleshooting the Diaphragm SwitchFranklin Electric - Little Giant
  • Little Giant RS-5 115-Volt Piggyback Diaphragm Pump-Down Switch for Sump Pumps, 10-Ft. Cord, Black, 599008
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Little Giant RS-5 115-Volt Piggyback Diaphragm Pump-Down Switch for Sump Pumps, 10-Ft. Cord, Black, 599008

4.4 out of 5 stars 154 ratings

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Purchase options and add-ons

Brand Little Giant
Colour Black
Material Nylon
Style Sump
Product Dimensions 7.7L x 4.3W x 12.1H Centimetres
Power source Corded Electric
Item weight 1.03 Pounds
Maximum lifting height 2.4 Meters
Voltage 115 Volts
Global Trade Identification Number 00010121990081

About this item

  • APPLICATIONS: converts manual pumps up to 15 Amps (running) and up to 1/2 HP to automatic operation; ideal for sump pumps; CSA listed in the USA; 10-ft. cord
  • EASY INSTALLATION: equipped with a piggyback plug for easy installation; plug the pump's plug into the back of the switch plug and plug the switch into the wall outlet
  • COMPACT DESIGN: designed to fit confined spaces such as narrow sump pits or basins, 5 gallon pails and other small spaces; 3.031 inches x 1.7 inches x 4.75 inches high
  • ON/OFF LEVEL: Pump activates when water reaches 8 inches and shuts off when water falls to 2-inches; override automatic operation by plugging pump directly to wall outlet
  • SPECIFICATIONS: 10-foot power cord; 115-Volt; Maximum 15 Amps (Running), 1/2 HP; CSA listed in the USA; 3.031 inches x 1.7 inches x 4.75 inches high

Frequently bought together

This item: Little Giant RS-5 115-Volt Piggyback Diaphragm Pump-Down Switch for Sump Pumps, 10-Ft. Cord, Black, 599008
$83.79
Get it by Tuesday, Jul 29
Only 9 left in stock (more on the way).
Ships from and sold by 鶹.ca.
Total price:$00
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From the brand


From the manufacturer

RS-5 970x600

The Little Giant RS-5 115-volt diaphragm switch can be used in sump systems, ponds, skimmers, fountains, hydroponic basins and with any utility pump. This switch can easily fit in small spaces such as a 5-gallon pail. The RS-5 is designed to control 60 Hz,115-volt pumps up to a maximum of 1/2 hp or 15 running Amps.

This normally open/pump down switch starts and stops the pump automatically. The pump activates when water reaches 8" and shuts off when water falls down to 2" (+/- 0.5"). The switch is made of corrosion-resistant nylon and is suitable for use with non-potable water.

Installation is easy with the piggyback plug. Just plug the pump into the switch's plug and plug the switch into the outlet. Mounting hardware is included.

The RS-5 switch comes in your choice of lengths: 10' or 18'.

Rs-5 Pump Down Diaphragm Switch

RS-5 A+ Content Pond 300x300

For Pond/Skimmer Installations

A favorite for pond and fountain enthusiasts because of it's SMALL PROFILE allowing it to fit in basins, skimmers and vaults where other switches can't. 10' and 18' cord lengths are available. See comparison chart below.

This switch is 4.75" high x 3.03" long x 1.7" wide.

RS-5 A+ Content Hydroponics 300x300

For Hydroponic Installations

The ability to fit inside a 5 gallon pail makes this the switch hydroponics operators seek out.

RS-5 A+ Sump 300x300

For Sump Installations

Tangle-free operation and small profile make this switch popular in sump systems, especially in systems with a back-up pump is taking up additional room.

RS-5 A+ Content Utility Pump 300x300

For Utility Pumps

Turn your utility pump into an automatic pump by adding the RS-5 diaphragm switch. Whether you are emptying a flooded basement, using it in a window well, or draining a ditch, using the switch allows you to go on with other activities without worrying about watching the pump.

RS-5 A+ Content On-Off 300x300

On/Off Levels

The RS-5 activates the pump at approximately 8" and shuts off the pump at approximately 2" +/- 0.5".

RS-5 A+ Content - Piggyback 300x300

Easy Installation

The RS-5 features a PIGGYBACK plug making it extremely easy to use. Just plug the pump into the switch and plug the switch into the outlet.

Need to switch back to manual mode? No problem, just unplug the pump from the switch and plug it directly into the outlet.

RS-5 (18') - 599009
RS-5 (10') - 599008
RS-5LL - 599019
RVMS-10 - 599261
RVMS-20 - 599263
Customer Reviews
4.2 out of 5 stars 7
4.4 out of 5 stars 154
4.4 out of 5 stars 100
4.4 out of 5 stars 181
4.0 out of 5 stars 1
Cord Length 18' 10' 25' 10' 20'
On Level 8" 8" 2.5" 6.5" Maximum (Adjustable) 6.5" Maximum (Adjustable)
Off Level 2" 2" 1" 0.75" Minimum (Adjustable 0.75" Minimum (Adjustable
Pump HP Maximum 1/2 HP 1/2 HP 1/3 HP 1/2 HP 1/2 HP
Running Amps Maximum 15 Amps 15 Amps 10 Amps 13 Amps 13 Amps
Piggyback Plug
Wastewater Segment Banner 970x600

Looking for another product?

Our Little Giant Store on 鶹 has a diverse selection of products and accessories for wastewater and clean water. Whether you are looking for additional accessories, repair kits or other pumping solutions, our Little Giant store is organized to help you find the products you need fast and only shows in-stock products. The link for the store is found at the top of the page under the product title.

Product information

Technical Details

Manufacturer ‎Franklin Electric Co., Inc.
Place of Business ‎Franklin Electric Canada, Inc., 61 Parr Blvd. Unit 7, Bolton, ON L7E 4E3 1-888.885.9254
Part Number ‎599008
Product Dimensions ‎4.32 x 7.7 x 12.07 cm; 467.2 g
Item model number ‎599009
Is discontinued by manufacturer ‎No
Size ‎Max 1/2 HP, 15A, 10-Ft. Cord
Colour ‎Black
Style ‎Sump
Material ‎Nylon
Pattern ‎not_applicable
Shape ‎circle
Power Source ‎Corded Electric
Voltage ‎115 Volts
Wattage ‎200 watts
Horsepower ‎0.5
Item Package Quantity ‎1
Measurement System ‎Imperial
Special Features ‎not_applicable
Usage ‎Amateur, Professional
Included Components ‎Instruction sheet, Diaphragm Switch with 10-ft. Cord
Batteries Included? ‎No
Batteries Required? ‎No
Warranty Description ‎1
Item Weight ‎467 g
Country of origin ‎Mexico

Additional Information

ASIN B0032ALS6U
Customer Reviews
4.4 out of 5 stars 154 ratings

4.4 out of 5 stars
鶹 Rank
Date First Available Sept. 21 2011

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Little Giant RS-5 115-Volt Piggyback Diaphragm Pump-Down Switch for Sump Pumps, 10-Ft. Cord, Black, 599008


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Product description

鶹.ca Product Description

Little Giant's piggyback diaphragm switch converts any manual pump up to 1/2 HP (115V, 15 maximum running Amps) to automatic operation. Includes a 10-foot power cord. Designed to operate in water the compact design works well in limited space. The switch can be used by attaching it to the the discharge pipe to control on-off operation of the pump. The switch is activated by pressure to a diaphragm, caused by rising water around the switch housing. The switch activates the pump when water reaches 8 inches and shuts the pump off when water falls to 2 inches (+/- 0.5 inches). This switch is ideal for use with sump pumps. Note: the power cord contains a breather tube. Be sure power cord is not pinches so that the breather tube doesn't get obstructed. Non-restrictive air flow is required for proper operation.

From the Manufacturer

Piggyback Diaphragm Switch

Safety and product resources

Top Brand: Little Giant

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Little Giant RS-5 115-Volt Piggyback Diaphragm Pump-Down Switch for Sump Pumps, 10-Ft. Cord, Black, 599008
Little GiantRS-5 115-Volt Piggyback Diaphragm Pump-Down Switch for Sump Pumps, 10-Ft. Cord, Black, 599008
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Price$83.79$46.24$36.99$208.07-9%$149.44
Was:$164.39
$33.63
Delivery
Get it by Tuesday, Jul 29
Get it Aug 13 - 25
Get it by Tuesday, Jul 29
Get it by Monday, Aug 18
Get it by Tuesday, Jul 29
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Customer reviews

4.4 out of 5 stars
154 global ratings

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Share your thoughts with other customers
Beware of Missing Parts
1 out of 5 stars
Beware of Missing Parts
I bought this diaphragm switch in 2021 to attach to my pond pump. Haven't had a chance to use it until this week. Once it was set up and I turned the pump on, my ground fault tripped repeatedly. Finally, I decided to open the switch and found there are none of the necessary parts included, only what is shown in the attached photo. $83 for an empty shell with a cord. Beware.
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Top reviews from Canada

  • Reviewed in Canada on January 9, 2025
    Verified Purchase
    Had the unpleasant job of having to replace the switch in a septic holding tank. Once all of the "stuff" was pumped out of the tank we were able to install this and it worked great all summer. Cottage shut down for winter but hoping it works for us come next year too.
  • Reviewed in Canada on December 18, 2024
    Verified Purchase
    Great product for the price, so far it has done the job for the last couple years
  • Reviewed in Canada on January 22, 2022
    Verified Purchase
    This took a bit of fiddling, but after proper setup it is the perfect replacement for the non-functional float switch on my sump pump. Keep in mind is this is a pressure differential switch. The water level will be reduced by approximately 7" or 175 mm when the switch turns on the pump. The lower down in the sump you affix the switch, the lower the levels will stay. I have it about 4" (100 mm) above the bottom of my sump, and this switch consistently keeps the water level between 2" (50 mm) and 10" (250 mm). It starts my pump automatically whenever the water reaches that ~10" mark, and pumps down to ~2-3". There is always water in the bottom of my sump, so the pump doesn't ever start dry. I was concerned about the cost of this switch, but I am very happy with my purchase. It has been running flawlessly since November.
  • Reviewed in Canada on April 21, 2020
    Verified Purchase
    Had a first switch die out after 7 years of service (removing it for winter), with water infiltrating into the chamber (I am guessing there should not be water there). 4 stars out of 5 because could have lasted longer - the pump itself is still running...
    One person found this helpful
    Report
  • Reviewed in Canada on June 17, 2024
    Verified Purchase
    Sump pump switch is awesome and 鶹 sells for far below any local supplier even with my professional discounts.
  • Reviewed in Canada on April 20, 2024
    Verified Purchase
    Reliable and well made switch.
  • Reviewed in Canada on March 28, 2024
    Verified Purchase
    I bought this diaphragm switch in 2021 to attach to my pond pump. Haven't had a chance to use it until this week. Once it was set up and I turned the pump on, my ground fault tripped repeatedly. Finally, I decided to open the switch and found there are none of the necessary parts included, only what is shown in the attached photo. $83 for an empty shell with a cord. Beware.
    Customer image
    1.0 out of 5 stars
    Beware of Missing Parts

    Reviewed in Canada on March 28, 2024
    I bought this diaphragm switch in 2021 to attach to my pond pump. Haven't had a chance to use it until this week. Once it was set up and I turned the pump on, my ground fault tripped repeatedly. Finally, I decided to open the switch and found there are none of the necessary parts included, only what is shown in the attached photo. $83 for an empty shell with a cord. Beware.
    Images in this review
    Customer image
  • Reviewed in Canada on August 25, 2021
    Verified Purchase
    To power a sump pump. It does what it is supposed to do

Top reviews from other countries

  • 鶹 Customer
    5.0 out of 5 stars Works perfect (so far)
    Reviewed in the United States on May 27, 2025
    Verified Purchase
    Works perfect (so far).
    It's screwed into lower pump housing on a non Little Giant 3200 GPH pump located within a pond skimmer.
    You'd just have to make sure your screws don't penetrate a vital pump area.
  • Spa guy
    5.0 out of 5 stars Little Giant rarely disappoints.
    Reviewed in the United States on April 10, 2025
    Verified Purchase
    Works as expected, Little Giant for the win.
  • 3boysinNJ
    5.0 out of 5 stars Works fine - got me thru Hurricane Sandy!
    Reviewed in the United States on November 16, 2012
    Verified Purchase
    I found that the original switch on my sump pump was not switching off so I needed to make a call to replace the switch or replace the entire unit. My basement flooded during Irene - so I knew I was in danger of that happening again and didn't want to take any chances. I replace the switch, tested it and all has been well - but I did get a generator and spare battery for the backup pump as in a power outage it doesn't matter if the pump is working when you have no power ... and then Sandy hit. Boy was I glad. The switch, and the pump, worked flawlessly all thru the rain and the snowmelt from the following storm.
    This was much cheaper than a new pump. Very easy to fit (2 screws) and could actually be used to operate dual-pumps if you had that setup to handle very large volumes, or wanted the redundancy. Be aware that it needs a decent head of water before it activates - I needed to pour 15-20 gallons into the sump before it triggered - seems to need 8-10 inches of head. This is actually a good thing - pumps have a longer life if they have a longer cycle time - better to run for 30 seconds an hour than 10 seconds 3 times an hour. Just don't think it's not working if you have a foot of water in your sump and it's still not on - the footer and mounting will take 4-5 inches.
  • Kindle Customer
    5.0 out of 5 stars Sump pump
    Reviewed in the United States on September 7, 2024
    Verified Purchase
    Was bought to replace on our son’s sump pump that was cracked. Fit perfectly. Easy transition to new part. Works great.
  • stardestroyer
    3.0 out of 5 stars Works well, but has some design defects
    Reviewed in the United States on April 1, 2011
    Verified Purchase
    Works well enough... But has some easy to fix design defects that are so glaring it's strange they were not caught before!

    First, the pros: looks good and solid enough, works very well: starts and stops the water at about the expected levels. But, there are two cons: first, plastic construction is very light: so light in fact that it floats in the water and does not sink to the bottom! So I can't just lower it down and have it sit at the bottom of the sump well, but rather have to place a brick on it to keep it down. Can't believe the company could not attach a small metal weight to weigh it down! Second con is lack of any way to test it: my old diaphragm switch has a small button I could push to test it, but not this guy.

    So, I am keeping it, but 2 very small things could have made me a lot happier! Minus 1 star for each of them.