Liquid-Level Switches | McMaster-Carr

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For Use With

Alcohol-Based Solvents

Cleaning Solutions

Conductive Liquids

Liquids with Solids

Plating Solutions

Acetic Acid (White Vinegar)

System of Measurement

Input Voltage

20V AC to 240V AC

95V AC to 250V AC

8V DC to 36V DC

10V DC to 28V DC

10V DC to 30V DC

10V DC to 35V DC

10V DC to 40V DC

12V DC to 24V DC

12V DC to 30V DC

12V DC to 36V DC

14V DC to 28V DC

18V DC to 36V DC

Mounting Position

Pipe Size

Body Material

Stainless Steel

Mounting Location

Float Material

Stainless Steel

Electrical Connection

Metric Circular

Maximum Temperature

Less than 200° F

200° F to 249° F

250° F to 299° F

300° F to 399° F

400° F or greater

Environment

Food and Beverage

High-Pressure Washdown

Material

Graphite Composite

Stainless Steel

Switch Starting Position

Switch Designation

Connects To

Current @ Voltage

0.12 amp @ 120V AC

0.16 amp @ 120V AC

0.17 amp @ 120V AC

0.28 amp @ 120V AC

0.3 amp @ 120V AC

0.4 amp @ 120V AC

0.5 amp @ 120V AC

0.83 amp @ 120V AC

1 amp @ 120V AC

5 amp @ 120V AC

6 amp @ 120V AC

8 amp @ 120V AC

10 amp @ 120V AC

15 amp @ 120V AC

20 amp @ 120V AC

0.25 amp @ 240V AC

10 amp @ 250V AC

0.5 amp @ 300V AC

Voltage

Overall Diameter

Stem Material

Stainless Steel

Thread Type

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

DFARS Specialty Metals

RoHS

Compliant with Exemptions

REACH

Export Control Classification Number (ECCN)

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903 Products

Float Switches

Level Switches

Dual-Level Vertical-Mount Float Switches for Water

Dual-Level Vertical-Mount Float Switches for Water

Two float switches actuate at different water levels

Horizontal-Mount Float Switches for Water

Horizontal-Mount Float Switches for Water

Install into a threaded connection in your tank wall from outside the tank

Vertical-Mount Float Switches for Water

Vertical-Mount Float Switches for Water

Mount on the top or bottom of your tank to activate equipment when the water reaches the float

Through-Wall Vertical-Mount Float Switches for Water

Through-Wall Vertical-Mount Float Switches for Water

Mount on the top or bottom of your tank and secure with a nut from inside

Through-Wall Horizontal-Mount Float Switches for Water

Through-Wall Horizontal-Mount Float Switches for Water

Mount through the tank wall and secure with a nut from inside

Through-Wall Horizontal-Mount Float Switches for Fuels and Oils

Through-Wall Horizontal-Mount Float Switches for Fuels and Oils

Mount through the tank wall and secure with a nut from inside

Vertical-Mount Hazardous Location Float Switches for Fuels and Oils

Vertical-Mount Hazardous Location Float Switches for Fuels and Oils

UL listed and CSA certified for safe use near flammable gases and combustible dust

Drop-In Float Switches for Water

Drop-In Float Switches for Water

Hang in your tank instead of mounting through the wall

Horizontal-Mount Float Switches for Fuels and Oils

Horizontal-Mount Float Switches for Fuels and Oils

Install into a threaded connection in your tank wall from outside the tank

Vertical-Mount Compressed-Air Float Switches for Fuels and Oils

Vertical-Mount Compressed-Air Float Switches for Fuels and Oils

A top-mounted compressed air valve opens when liquid levels move the float

Vertical-Mount Float Switches for Fuels and Oils

Vertical-Mount Float Switches for Fuels and Oils

Mount on the top or bottom of your tank to activate equipment when the liquid reaches the float

Hazardous Location Float Switches for Chemicals

Hazardous Location Float Switches for Chemicals

UL listed and CSA certified for safe use near flammable gases and combustible dust

Dual-Level Vertical-Mount Float Switches for Fuels and Oils

Dual-Level Vertical-Mount Float Switches for Fuels and Oils

Two float switches actuate at different liquid levels

Vertical-Mount Float Switches for Food and Beverage

Vertical-Mount Float Switches for Food and Beverage

Meet NSF/ANSI Standard 169 for food processing and thread through the tank's top or bottom

Through-Wall Horizontal-Mount Float Switches for Chemicals

Through-Wall Horizontal-Mount Float Switches for Chemicals

Mount through the tank wall and secure with a nut from inside

Horizontal-Mount Float Switches for Food and Beverage

Horizontal-Mount Float Switches for Food and Beverage

Meet NSF/ANSI Standard 169 for food processing and thread through the side of the tank

Through-Wall Horizontal-Mount Float Switches for Food and Beverage

Through-Wall Horizontal-Mount Float Switches for Food and Beverage

Meet NSF/ANSI Standard 169 for food processing; side-mount and secure with a nut inside

Vertical-Mount Float Switches for Chemicals

Vertical-Mount Float Switches for Chemicals

Mount on the top or bottom of your tank to activate equipment when the liquid reaches the float

Horizontal-Mount Hazardous Location Float Switches for Fuels and Oils

Horizontal-Mount Hazardous Location Float Switches for Fuels and Oils

UL listed and CSA certified for safe use near flammable gases and combustible dust

Hazardous Location Float Switches for Water

Hazardous Location Float Switches for Water

UL listed and CSA certified for safe use near flammable gases and combustible dust

Horizontal-Mount Float Switches for Chemicals

Horizontal-Mount Float Switches for Chemicals

Install into a threaded connection in your tank wall from outside the tank

External-Mount Float Switches for Oils

External-Mount Float Switches for Oils

Housed in a clear acrylic reservoir that mounts to the outside of your tank for visibility

Through-Wall Vertical-Mount Float Switches for Chemicals

Through-Wall Vertical-Mount Float Switches for Chemicals

Mount on the top or bottom of your tank and secure with a nut from inside

Float Switches for Slurries and Thick Liquids

Float Switches for Slurries and Thick Liquids

Buoyant even in viscous liquids

Horizontal-Mount Compressed-Air Float Switches for Fuels and Oils

Horizontal-Mount Compressed-Air Float Switches for Fuels and Oils

A side-mounted compressed air valve opens when liquid levels move the float

Vertical-Mount Float Switches with Bracket for Fuels and Oils

Vertical-Mount Float Switches with Bracket for Fuels and Oils

The bracket mounts the switch to the inside of your tank

Vertical-Mount Float Switches with Brackets for Chemicals

Vertical-Mount Float Switches with Brackets for Chemicals

The bracket mounts the switch to the inside of your tank

Sump Pump Switches

Heavy Duty Sewage Water Float Switches for Sump Pumps

Heavy Duty Sewage Water Float Switches for Sump Pumps

Activate your pump in dirty water that contains sludge and sewage

Dual Float Switches for Sump Pumps

Dual Float Switches for Sump Pumps

If the primary float fails, the backup kicks in and alerts you to malfunction

Float Switches for Sump Pumps

Float Switches for Sump Pumps

Hang in a sump pit to detect rising water levels

Other Products

Level Sensor Switches

Level Sensor Switches

Activate equipment by detecting the liquid level in a tank

Liquid-Level Transmitters

Liquid-Level Transmitters

Send liquid-level data to logging and monitoring equipment

Float Switch Relays

Float Switch Relays

Amplify current to actuate equipment that has a higher current rating than your float switch

Ultrasonic Sensors

Ultrasonic Sensors

Measure the distance to objects and the level of liquids and materials

Paddle Level Switches

Paddle Level Switches

Actuate when the paddle stops rotating to indicate the level of dry material

Liquid-Level Gauges

Liquid-Level Gauges

Monitor fluid levels in containers

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)