Little Giant RFSN-9 115-Volt, Maximum 13-Amp - 1 2 HP, Pump Down Piggyback Tethered Float Switch for Pond, Sump, Sewage or Effluent Systems, 15-Ft. Cord, Grey, 599117
  • Little Giant RFSN-9 115-Volt, Maximum 13-Amp - 1 2 HP, Pump Down Piggyback Tethered Float Switch for Pond, Sump, Sewage or Effluent Systems, 15-Ft. Cord, Grey, 599117
  • Little Giant RFSN-9 115-Volt, Maximum 13-Amp - 1 2 HP, Pump Down Piggyback Tethered Float Switch for Pond, Sump, Sewage or Effluent Systems, 15-Ft. Cord, Grey, 599117
  • APPLICATIONS: water resistant pump down tethered float switch for sump, sewage, effluent systems, ponds or utility pumps; allows pumps to start/stop automatically; adjustable
  • LIMITATIONS: maximum 0.5 HP; 13 Amp maxumim pump run current; 85 Amp maximum pump start current; use only with pumps equipped with integral thermal overload protection
  • CORD LENGTH: 15-foot cord with piggyback plug; pumping range 7 inches to 36 inches
  • TEMPERATURE RATING: maximum liquid temperature 140 degrees F
  • LISTINGS: UR, CSA listed in the USA; Made in USA

Product information

Technical Details

Product Description

Product Description

Little Giant RFSN-9 115 Volt tethered float switch can be used for sump, sewage, effluent systems, ponds, fountains or utility pumps. Starts and stops pump automatically. Pumping range from 7 inches to 36 inches. This switch comes with a 15-foot cord and piggyback plug. Maximum 13 running Amps; 0.5 HP.

From the Manufacturer

This Little Giant float switch is a direct-acting, in-line control system for automatically controlling wastewater, effluent, and sewage pumps.


From the brand


From the manufacturer

Little Giant logo 300x300

There’s a reason we’ve been the go-to pump for HVAC, Plumbing, Pool, Pond, and Hydroponics professionals for generations: experience. For 80 years, Little Giant products have stood the test of time, pumping a steady flow of proven reliability and superior technical know-how.

RFSN Series Switches 300x300

Little Giant RFSN Series Switches

Converts manual pumps to automatic operation

The Little Giant RFSN pump switches offer easy conversion from manual to automatic operation. These switches will work in clear water, grey water (effluent applications) or black water (sewage applications).

Switches can be attached to the pump itself or to the piping.

Switch on/off ranges can be adjusted easily depending on where the tether is attached to the pump or piping.

Each switch includes a standard mounting clamp and features heavy-duty contacts.

Pump Down Switch (Normally Open)

As the water level rises, the float will also rise. When the water gets to a certain height, the contacts will CLOSE and the pump will turn ON.

As the water level lowers, the float will also lower. When the float is hanging down, the contact will OPEN and the pump will turn OFF.

At a Glance:

  • CSA and UR listed in the USA and Canada
  • Available in a selection of cord lengths
  • Available in different voltages
  • Some switches available with piggy-back plugs
  • Pump down switches
  • See table below for specifications
Piggy-back illustration 300x300

What is a Piggy-Back Switch?

The PIGGY-BACK plug design enables the pump to be used as either an AUTOMATIC PUMP or a MANUAL PUMP. To have the pump start/stop automatically, plug the pump into the switch's piggy-back plug and plug both plugs into the wall outlet (see automatic illustration). To switch to manual mode, just unplug the pump from the switch plug and plug the pump directly into a wall outlet (see manual illustration).

Manual mode allows you to run the pump immediately regardless of how high the water level is. This is used primarily for emergency water removal or for testing the switch operation.

RFSN with piggyback plug 150x300 RFSN with piggyback plug 150x300 RFSN with piggyback plug 150x300 RFSN with stripped leads 599128 RFSN-9 230V 150x300 RFSN with piggyback plug 150x300
Little Giant, RFSN-9, 599117 Little Giant RFSN-10, 599210 Little Giant RFSN-16, 599211 Little Giant RFSN-20, 599318 Little Giant RFSN-9, 599128 Little Giant RFSN-6, 599118
Voltage 115 Volts 115 Volts 115 Volts 125/250 Volts 208/230 Volts 115 Volts
Cord Length 15-Ft. 20-Ft. 20-Ft. 20-Ft. 15-Ft. 10-Ft.
Cord Type Piggy-back plug Piggy-back plug Piggy-back plug Plug-less (stripped leads) 230V Piggy-back plug Piggy-back plug
Maximum HP 1/2 HP 1/2 HP 3/4 HP 1-1/2 HP at 125 Volts; 3 HP at 250 Volts 1 HP at 230 Volts 1/2 HP
Maximum Running Amps 13A 13A 15A 20A 13A 13A
Maximum Starting Amps 85A 85A 85A 120A 85A 85A
Maximum Temperature 140 degrees F 140 degrees F 140 degrees F 120 degrees F 140 degrees F 140 degrees F
Type: Pump Down
Wastewater Segment Banner 970x600

Looking for other accessories?

Visit the LITTLE GIANT STORE (see link at the top of the page) and shop for other accessories under the WASTEWATER heading.







Little Giant RFSN-9 115-Volt, Maximum 13-Amp - 1 2 HP, Pump Down Piggyback Tethered Float Switch for Pond, Sump, Sewage or Effluent Systems, 15-Ft. Cord, Grey, 599117

$85.00  $42.00
Save: 51% off

ARRIVING & SHIPPING SOON!! Free shipping over $30.00
90 Days Easy Returns View More Return Policy

Please Choose:

Recommend Products


Liberty Pumps ALM-2-1 ALARM, BLACK
$65.00$131.00


  • Free delivery

    From $30

  • Support 24/7

    Online 24 hours

  • Free return

    365 a day

  • Payment method

    Secure payment

  • get promotion

    Secure payment