Low-Voltage Switches | McMaster-Carr

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110 Products

Sanitary Level Sensor Switches

Detect when oil rises on water, foam forms on beer, and tanks empty, triggering pumps and valves in food and sanitary lines. These switches are 3-A and European Hygienic Engineering and Design Group (EHEDG) certified since they’re easy to keep clean. Highly polished, they prevent bacteria from growing. They also stand up to hot spraying water, chemicals, and cleaners common to food plants, thanks to their PEEK probe, stainless steel body, BSPP threads, and IP ratings. Their IP67 rating also means they won’t fail if under water temporarily.

To connect to automated systems and remote displays, these switches work with IO Link and 4-20 mA analog output, making them good for hard-to-reach areas. Program the colors on the LED indicator to tell you what the switch is sensing.

USP Class tested, the plastic in these switches won’t leach chemicals. They’re also C-UL listed and CE marked to meet Canadian and European safety standards.

Note: Solids and liquids must have a dielectric constant of at least 1.5 to detect them.

													Electrical
	Pipe Size	Thread Type	Gender	Max. Pressure @ Temp.	Temp. Range, ° F	Insertion Dp.	Switch Starting Position	Switch Designation	Output Current, mA	Signal Output	Probe Material	Overall Lg.	Connection	No. of Poles	Certification	Enclosure Rating		Each
8V DC to 36V DC Input Voltage







				316 Stainless Steel Body

				1/2	BSPP	Male	145 psi @ 70° F	-40 to 230	9/16"	1 Off or 1 On	SPDT	100	PNP, NPN	PEEK	3 13/16"	M12	4	C-UL Listed, CE Marked, EHEDG Certified	IP67, IP69K	3910N11	0000000

Quick-Clamp Adapters

Image of Product. Front orientation. Tube Fittings.

Use quick-clamp adapters to connect these switches to quick-clamp sanitary tube fittings.

Tube Connection		Pipe Connection
For Tube OD	Flange OD	Pipe Size	Thread Type	Gender	Material	Max. Pressure @ Temp.	Food Industry Std.	Certification		Each
1 1/8"	1.988"	1/2	BSPP	Female	316 Stainless Steel	550 psi @ 70° F	3-A Certified 74-07	CE Marked, EHEDG Certified	3910N12	0000000

Float Switch Relays


ABS Body	Polycarbonate Body

Install one of these relays to actuate equipment that has a higher current rating than your switch. They can be used with any SPST switch. A 10-second time delay minimizes false activation in splashing liquid.

ABS Body—ABS relay has knockouts in the base for easy cable entry.

Polycarbonate Body—Polycarbonate relay is rated IP65 for protection from corrosion and washdowns.

	Current @ Voltage	Ht.	Wd.	Dp.	Electrical Connection		Each
120V AC/240V AC Input Voltage







	ABS Body

	0 to 120	1 Off or 1 On	SPDT	8 amp @ 120V AC	3 3/8"	3 3/8"	1 9/16"	Terminal Block	47475K62	0000000




			Polycarbonate Body

			0 to 120	1 Off or 1 On	SPDT	8 amp @ 120V AC	3 3/16"	6 5/16"	2 3/8"	Terminal Block	47475K82	000000

Vertical-Mount Float Switches for Fuels and Oils


Float Switch	Float Switch with Splash Guard

Mount these switches from outside the tank through a threaded connection at the top or bottom of your tank. They activate process equipment such as pumps or motors when the diesel fuel, hydraulic fluid, or oil level in your tank reaches the float.

316 Stainless Steel Float—Choose switches with a stainless steel float for durability in harsh conditions.

Splash Guard—Switches with splash guard minimize false switch activation caused by splashing liquid.

	Min. Specific Gravity	Max. Pressure @ Temp.	Temp. Range, ° F	Insertion Dp.	Switch Starting Position	Switch Designation	Current @ Voltage	Mounting Location	Float Ht.	Overall Dia.	Electrical Connection		Each
120V AC/240V AC Input Voltage







	Buna-N Float

	1/8	NPT	Male	0.45	150 psi @ 70° F	35 to 250	1 9/16"	1 Off/1 On	SPST-NO SPST-NC	0.17 amp @ 120V AC	Top, Bottom	1"	1"	Wire Leads	48095K11	000000


	1/8	NPT	Male	0.55	150 psi @ 70° F	35 to 145	1 7/8"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Top, Bottom	1"	1"	Wire Leads	48095K61	00000
	1/4	NPT	Male	0.55	150 psi @ 70° F	35 to 145	2 7/8"	1 Off/1 On	SPST-NO SPST-NC	0.5 amp @ 120V AC	Top, Bottom	2"	1 1/4"	Wire Leads	48095K81	00000




			Buna-N Float with Splash Guard

			1/8	NPT	Male	0.55	150 psi @ 70° F	35 to 145	1 7/8"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Top, Bottom	1"	1 1/2"	Wire Leads	48095K62	00000


			1/4	NPT	Male	0.55	150 psi @ 70° F	35 to 145	2 7/8"	1 Off/1 On	SPST-NO SPST-NC	0.5 amp @ 120V AC	Top, Bottom	2"	2"	Wire Leads	48095K82	00000




					316 Stainless Steel Float

					1/8	NPT	Male	0.7	300 psi @ 70° F	35 to 300	2 1/16"	1 Off/1 On	SPST-NO SPST-NC	0.5 amp @ 120V AC	Top, Bottom	1 3/16"	1 1/8"	Wire Leads	4646K82	000000

Horizontal-Mount Float Switches for Fuels and Oils


Style A	Style B	Style C

Style D	Style E	Style F

Install these switches into a threaded connection in your tank wall from outside the tank. They activate process equipment such as pumps or motors when the diesel fuel, hydraulic fluid, or oil level in your tank reaches the float. Choose switches with a metal body for durability in harsh conditions.

Splash Guard—Switches with splash guard minimize false switch activation caused by splashing liquid.

		Pipe												Conduit
	Style	Size	Thread Type	Gender	Min. Specific Gravity	Max. Pressure @ Temp.	Temp. Range, ° F	Insertion Dp.	Switch Starting Position	Switch Designation	Current @ Voltage	Float Material	Electrical Connection	Trade Size	Thread Type	Gender		Each
120V AC/240V AC Input Voltage







				Polybutylene Body

				A	1/2	NPT	Male	0.85	100 psi @ 70° F	-40 to 145	2 3/4"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Polybutylene	Spade Terminal	—	—	—	50205K35	000000


				A	1/2	NPT	Male	0.85	100 psi @ 70° F	-40 to 145	2 3/4"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Polybutylene	Wire Leads	—	—	—	50205K31	00000
				A	1/2	NPT	Male	0.85	100 psi @ 70° F	-40 to 145	2 3/4"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Polybutylene	Wire Leads	1/2	NPT	Male	50205K32	00000




						Polybutylene Body and Splash Guard

						B	1	NPT	Male	0.85	100 psi @ 70° F	-40 to 145	1 7/8"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Polybutylene	Spade Terminal	—	—	—	50205K36	00000




								PPS Body

								A	1 1/4	NPT	Male	0.7	200 psi @ 70° F	-40 to 190	4 1/8"	1 Off/1 On	SPST-NO SPST-NC	0.5 amp @ 120V AC	PPS	Wire Leads	—	—	—	7040T11	000000


								C	1 1/4	NPT	Male	0.7	100 psi @ 70° F	32 to 190	4 13/16"	1 Off or 1 On	SPDT	15 amp @ 120V AC	PPS	Wire Leads	—	—	—	7040T12	000000




										316 Stainless Steel Body

										D	1/2	NPT	Male	0.55	100 psi @ 70° F	-40 to 225	3 11/16"	1 Off/1 On	SPST-NO SPST-NC	0.17 amp @ 120V AC	Polypropylene	Wire Leads	1/2	NPT	Male	46515K12	000000


										D	1/2	NPT	Male	0.65	100 psi @ 70° F	-40 to 250	3 11/16"	1 Off/1 On	SPST-NO SPST-NC	0.17 amp @ 120V AC	Nylon	Wire Leads	1/2	NPT	Male	5123K22	000000
										E	1	NPT	Male	0.85	500 psi @ 70° F	-40 to 300	5 5/16"	1 Off or 1 On	SPDT	0.17 amp @ 120V AC	304 Stainless Steel	Wire Leads	1/2	NPT	Male	46815K14	000000
										F	1	NPT	Male	0.9	900 psi @ 70° F	-40 to 300	4 1/8"	1 Off or 1 On	SPDT	0.17 amp @ 120V AC	316 Stainless Steel	Wire Leads	1/2	NPT	Male	46815K12	000000




												Brass Body

												E	1	NPT	Male	0.8	150 psi @ 70° F	-40 to 180	3 7/8"	1 Off or 1 On	SPDT	0.17 amp @ 120V AC	Buna-N	Wire Leads	1/2	NPT	Male	5126K19	000000

Dual-Level Vertical-Mount Float Switches for Water

Empty and fill your tank with a single device—these dual-level switches include two float switches that actuate at different levels. The stem can be cut to length. Mount through a threaded connection at the top of your tank.

													Overall
	Pipe Size	Thread Type	Gender	Min. Specific Gravity	Max. Pressure @ Temp.	Temp. Range, ° F	Insertion Dp.	Switch Starting Position	Switch Designation	Current @ Voltage	Mounting Location	Float Ht.	Ht.	Dia.	Electrical Connection	Includes		Each
120V AC/240V AC Input Voltage







				Polypropylene Float

				2	NPT	Male	0.85	100 psi @ 70° F	35 to 220	36"	1 Off/1 On	SPST-NO SPST-NC	0.5 amp @ 120V AC	Top	2"	38 5/8"	1 1/2"	Wire Leads	Two Switches, Fittings	5267K44	0000000

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

Mount these switches through an unthreaded hole in your tank wall and secure with a nut from outside the tank. They activate process equipment such as pumps or motors when the diesel fuel, hydraulic fluid, or oil level in your tank reaches the float.

	Temp. Range, ° F	Insertion Dp.	Switch Starting Position	Switch Designation	Current @ Voltage	Mounting Location	Electrical Connection	Includes		Each
120V AC/240V AC Input Voltage







	Polybutylene Body and Float

	5/8"	0.85	100 psi @ 70° F	-40 to 145	2 7/8"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Through Wall	Wire Leads	Mounting Nut	50205K33	000000

Horizontal-Mount Float Switches for Water


Polysulfone Body	PPS	303 Stainless Steel Body

Brass Body	304 Stainless Steel Body	316 Stainless Steel Body

Install these switches into a threaded connection in your tank wall from outside the tank. They activate process equipment such as pumps or motors when the water level in your tank reaches the float. Some meet European safety standards.

Choose switches with a brass or stainless steel body for durability in harsh conditions.

	Pipe												Conduit
	Size	Thread Type	Gender	Min. Specific Gravity	Max. Pressure @ Temp.	Temp. Range, ° F	Insertion Dp.	Switch Starting Position	Switch Designation	Current @ Voltage	Float Material	Electrical Connection	Trade Size	Pipe Size	Thread Type	Gender		Each
120V AC Input Voltage







				303 Stainless Steel Body

				1	NPT	Male	0.7	350 psi @ 70° F	40 to 200	1 3/4"	1 Off/1 On	SPST-NO SPST-NC	0.5 amp @ 120V AC	304 Stainless Steel	Wire Leads	—	1/8	NPT	Male	48255K31	0000000




						Brass Body

						1	NPT	Male	0.9	1,000 psi @ 70° F	40 to 200	1 3/4"	1 Off/1 On	SPST-NO SPST-NC	0.5 amp @ 120V AC	Polypropylene	Wire Leads	—	1/8	NPT	Male	48255K26	000000


						120V AC/240V AC Input Voltage







										Polysulfone Body

										1/2	NPT	Male	0.71	150 psi @ 70° F	-40 to 225	2 11/16"	1 Off/1 On	SPST-NO SPST-NC	0.16 amp @ 120V AC	Polysulfone	Wire Leads	—	—	—	—	49175K37	00000




												PPS Body

												1	NPT	Male	0.6	150 psi @ 70° F	40 to 210	4 3/4"	1 Off or 1 On	SPDT	5 amp @ 120V AC	PPS	Wire Leads	1/2	—	NPT	Male	46235K25	000000




														304 Stainless Steel Body—CE Marked

														1/2	NPT	Male	0.85	360 psi @ 70° F	0 to 250	3 1/4"	1 Off/1 On	SPST-NO SPST-NC	0.17 amp @ 120V AC	304 Stainless Steel	Wire Leads	1/2	—	NPT	Male	48255K111	00000




																316 Stainless Steel Body

																1	NPT	Male	0.75	1,000 psi @ 70° F	-30 to 300	5"	1 Off or 1 On	SPDT	0.16 amp @ 120V AC	316 Stainless Steel	Wire Leads	1/2	—	NPT	Male	48255K112	000000

Vertical-Mount Hazardous Location Float Switches for Fuels and Oils

For use in locations with flammable gases and combustible dust, these switches are UL listed and CSA certified for Class I, Divisions 1 and 2, Groups C and D; and Class II, Divisions 1 and 2, Groups E, F, and G. Mount them vertically through the top of your tank. They're rated NEMA 4 for protection from washdowns.

	Pipe											Float			Conduit
	Size	Thread Type	Gender	Min. Specific Gravity	Max. Pressure @ Temp.	Temp. Range, ° F	Insertion Dp.	Switch Starting Position	Switch Designation	Current @ Voltage	Mounting Location	Lg.	Dia.	Electrical Connection	Trade Size	Thread Type	Gender	Certification		Each
120V AC/240V AC Input Voltage







				316 Stainless Steel Body and Float

				1 1/2	NPT	Male	0.7	100 psi @ 70° F	35 to 275	9 1/4"	1 Off or 1 On	SPDT	10 amp @ 120V AC	Top	4 1/2"	1 5/8"	Wire Leads	3/4	NPT	Female	UL Listed, CSA Certified, FM Approved	4914K97	000000000

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

													Overall
	Pipe Size	Thread Type	Gender	Min. Specific Gravity	Max. Pressure @ Temp.	Temp. Range, ° F	Insertion Dp.	Switch Starting Position	Switch Designation	Current @ Voltage	Mounting Location	Float Ht.	Ht.	Dia.	Electrical Connection		Each
120V AC/240V AC Input Voltage







				Buna-N Float

				2	NPT	Male	0.55	150 psi @ 70° F	35 to 180	33 1/2"	1 Off/1 On	SPST-NO SPST-NC	0.17 amp @ 120V AC	Top	1 11/16"	35"	1 7/8"	Wire Leads	5267K84	0000000




						316 Stainless Steel Float

						2	NPT	Male	0.75	750 psi @ 70° F	35 to 275	34"	1 Off/1 On	SPST-NO SPST-NC	0.17 amp @ 120V AC	Top	2"	35 1/2"	2 1/16"	Wire Leads	5267K88	00000000

Vertical-Mount Float Switches for Water


Buna-N Float	Polypropylene Float	CPVC Float	316 Stainless Steel Float

Mount these switches from outside the tank through a threaded connection at the top or bottom of your tank. They activate process equipment such as pumps or motors when the water level in your tank reaches the float. Choose switches with a stainless steel float for durability in harsh conditions.

	Min. Specific Gravity	Max. Pressure @ Temp.	Temp. Range, ° F	Insertion Dp.	Switch Starting Position	Switch Designation	Current @ Voltage	Mounting Location	Float Ht.	Overall Dia.	Electrical Connection		Each
120V AC/240V AC Input Voltage







	Buna-N Float

	1/8	NPT	Male	0.45	50 psi @ 70° F	35 to 150	1 7/8"	1 On	SPST-NC	0.17 amp @ 120V AC	Top, Bottom	1 1/16"	1 7/8"	Wire Leads	48095K41	000000




			Polypropylene Float

			1/8	NPT	Male	0.6	50 psi @ 70° F	35 to 225	1 9/16"	1 Off/1 On	SPST-NO SPST-NC	0.17 amp @ 120V AC	Top, Bottom	1"	1"	Wire Leads	50195K11	00000


			1/8	NPT	Male	0.9	150 psi @ 70° F	35 to 150	1 9/16"	1 Off/1 On	SPST-NO SPST-NC	0.17 amp @ 120V AC	Top, Bottom	1"	1"	Wire Leads	50195K75	00000
			1/8	NPT	Male	0.9	150 psi @ 70° F	35 to 150	1 7/8"	1 Off/1 On	SPST-NO SPST-NC	0.17 amp @ 120V AC	Top, Bottom	1"	3/4"	Wire Leads	50195K65	00000




					CPVC Float

					1/4	NPT	Male	0.85	15 psi @ 70° F	35 to 180	2 15/16"	1 Off/1 On	SPST-NO SPST-NC	0.17 amp @ 120V AC	Top, Bottom	1 13/16"	1 1/2"	Wire Leads	5127K21	000000




							316 Stainless Steel Float

							1/2	NPT	Male	0.35	300 psi @ 70° F	35 to 300	4 13/16"	1 Off/1 On	SPST-NO SPST-NC	0.83 amp @ 120V AC	Top, Bottom	3 1/2"	3 1/2"	Wire Leads	4646K37	000000

Drop-In Float Switches for Water


ABS Float with Three-Prong Socket	Polypropylene Float with Adjustable Level

Hang these free-floating switches in your tank for water-level monitoring that doesn’t require installation through a tank wall.

Three-Prong Socket—Switches with three-prong socket allow you to plug your pump directly into the switch; the socket piggybacks to the three-prong plug. They’re often used to trigger an alarm.

Adjustable Level—Switches with adjustable level prevent excessive switch activation in tanks with fluctuating level. Adjust the set point by moving the weight along the cable or altering the cable length.

									Float			Electrical
	Cable Lg., ft.	Min. Specific Gravity	Max. Pressure @ Temp.	Temp. Range, ° F	Switch Starting Position	Switch Designation	Current @ Voltage	Dp. Set Point	Dia.	Ht.	Electrical Connection Type	Connection	No. of Blades	Certification		Each
120V AC Input Voltage







				ABS Float with Three-Prong Socket

				9 1/2	1	20 psi @ 70° F	35 to 140	1 On	SPST-NC	15 amp @ 120V AC	10"	2 1/2"	3 1/4"	Plug In	Straight Blade	3	UL Listed	51445K813	000000


				9 1/2	1	20 psi @ 70° F	35 to 140	1 On	SPST-NC	15 amp @ 120V AC	10"	3 1/2"	3 1/4"	Plug In	Straight Blade	3	UL Listed	51445K912	00000
				19 1/2	1	20 psi @ 70° F	35 to 140	1 On	SPST-NC	15 amp @ 120V AC	10"	2 1/2"	3 1/4"	Plug In	Straight Blade	3	UL Listed	51445K823	00000
				19 1/2	1	20 psi @ 70° F	35 to 140	1 On	SPST-NC	15 amp @ 120V AC	10"	3 1/2"	3 1/4"	Plug In	Straight Blade	3	UL Listed	51445K922	00000
				29 1/2	1	20 psi @ 70° F	35 to 140	1 On	SPST-NC	15 amp @ 120V AC	10"	2 1/2"	3 1/4"	Plug In	Straight Blade	3	UL Listed	51445K832	00000
				29 1/2	1	20 psi @ 70° F	35 to 140	1 On	SPST-NC	15 amp @ 120V AC	10"	3 1/2"	3 1/4"	Plug In	Straight Blade	3	UL Listed	51445K932	00000
				49 1/2	1	20 psi @ 70° F	35 to 140	1 On	SPST-NC	15 amp @ 120V AC	10"	2 1/2"	3 1/4"	Plug In	Straight Blade	3	UL Listed	51445K842	000000
				49 1/2	1	20 psi @ 70° F	35 to 140	1 On	SPST-NC	15 amp @ 120V AC	10"	3 1/2"	3 1/4"	Plug In	Straight Blade	3	UL Listed	51445K942	000000


				250V AC/250V DC Input Voltage







								Polypropylene Float with Adjustable Level

								19 3/4	0.6	29 psi @ 70° F	32 to 140	1 On	SPST-NC	10 amp @ 250V AC	11" to 39"	2 3/4"	4 1/4"	—	Wire Leads	—	—	49045K12	000000

External-Mount Float Switches for Oils

For visual monitoring and easy access, these switches are housed in a clear acrylic reservoir that mounts to the outside of your tank. Mount them vertically.

										Overall
	Pipe Size	Thread Type	Gender	Min. Specific Gravity	Max. Pressure @ Temp.	Temp. Range, ° F	Switch Starting Position	Switch Designation	Current @ Voltage	Ht.	Dia.	Ctr.-to-Ctr. Ht.	Electrical Connection		Each
120V AC/240V AC Input Voltage







				Acrylic Plastic Body and 316 Stainless Steel Float

				1/2	NPT	Female	0.65	125 psi @ 70° F	35 to 170	1 On	SPST-NC	0.4 amp @ 120V AC	6 3/8"	3 5/16"	4 3/8"	Wire Leads	4288K52	0000000

Through-Wall Horizontal-Mount Float Switches for Water


Polysulfone Body and Float	Brass Body and Buna-N Float

Mount these switches through an unthreaded hole in your tank wall and secure with a nut from outside the tank. They activate process equipment such as pumps or motors when the water level in your tank reaches the float.

Brass Body—Choose switches with a brass body for durability in harsh conditions.

	Temp. Range, ° F	Insertion Dp.	Switch Starting Position	Switch Designation	Current @ Voltage	Mounting Location	Electrical Connection	Includes		Each
120V AC/240V AC Input Voltage







	Polysulfone Body and Float

	1/2"	0.71	150 psi @ 70° F	-40 to 225	2 11/16"	1 Off/1 On	SPST-NO SPST-NC	0.16 amp @ 120V AC	Through Wall	Wire Leads	Mounting Nut	49175K38	000000


	5/8"	0.71	150 psi @ 70° F	-40 to 225	2 11/16"	1 Off/1 On	SPST-NO SPST-NC	0.16 amp @ 120V AC	Through Wall	Wire Leads	Mounting Nut	49175K39	00000




			Brass Body and Buna-N Float

			13/32"	0.55	150 psi @ 70° F	-40 to 180	1 3/4"	1 Off/1 On	SPST-NO SPST-NC	0.16 amp @ 120V AC	Through Wall	Wire Leads	Mounting Nut	49175K41	000000

Horizontal-Mount Float Switches for Food and Beverage

Install these switches into a threaded connection in your tank wall from outside the tank. Often used in food-processing applications, they meet NSF/ANSI Standard 169.

	Pipe											Conduit
	Size	Thread Type	Gender	Min. Specific Gravity	Max. Pressure @ Temp.	Temp. Range, ° F	Insertion Dp.	Switch Starting Position	Switch Designation	Current @ Voltage	Electrical Connection	Trade Size	Thread Type	Gender	Certification		Each
120V AC/240V AC Input Voltage







				Polypropylene Body and Float

				1/2	NPT	Male	0.7	100 psi @ 70° F	35 to 220	2 3/4"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Wire Leads	—	—	—	UL Recognized Component, CSA Certified	46515K45	000000


				1/2	NPT	Male	0.7	100 psi @ 70° F	35 to 220	2 3/4"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Wire Leads	1/2	NPT	Male	UL Recognized Component, CSA Certified	46515K41	00000

Horizontal-Mount Hazardous Location Float Switches for Fuels and Oils


Style A	Style B

Style C

Designed for use in areas where flammable substances are present, these switches are CSA certified for hazardous locations. Mount them through a tank wall. All are rated NEMA 4 for protection from washdowns. All are single pole, double throw (SPDT) and can be installed to turn one circuit from “off” to “on” or from “on” to “off”.

Switches with a stainless steel body are more corrosion resistant than switches with a brass body.

		Pipe									Conduit
	Style	Size	Thread Type	Gender	Min. Specific Gravity	Max. Pressure @ Temp.	Temp. Range, ° F	Insertion Dp.	Current @ Voltage	Float Material	Trade Size	Thread Type	Gender	Hazardous Location Rating	Enclosure Rating		Each
120V AC/240V AC Input Voltage







				Brass Body

				A	1	NPT	Male	0.7	350 psi @ 70° F	0 to 220	1 3/4"	5 amp @ 120V AC	304 Stainless Steel	3/4	NPT	Male	NEC Class I Divisions 1, 2 Groups B, C, D NEC Class II Divisions 1, 2 Groups E, F, G	NEMA 4	4909K12	0000000


				A	1	NPT	Male	0.9	1,000 psi @ 70° F	0 to 220	1 3/4"	5 amp @ 120V AC	Polypropylene	3/4	NPT	Male	NEC Class I Divisions 1, 2 Groups B, C, D NEC Class II Divisions 1, 2 Groups E, F, G	NEMA 4	4909K63	000000
				B	1	NPT	Male	0.5	200 psi @ 70° F	0 to 220	2 7/8"	5 amp @ 120V AC	304 Stainless Steel	3/4	NPT	Male	NEC Class I Divisions 1, 2 Groups B, C, D NEC Class II Divisions 1, 2 Groups E, F, G	NEMA 4	4909K11	000000
				C	1 1/2	NPT	Male	0.7	100 psi @ 70° F	0 to 275	13 3/16"	10 amp @ 120V AC	316 Stainless Steel	3/4	NPT	Female	NEC Class I Divisions 1, 2 Groups C, D NEC Class II Divisions 1, 2 Groups E, F, G	IP56 NEMA 4	4914K86	000000




						303 Stainless Steel Body

						A	1	NPT	Male	0.9	2,000 psi @ 70° F	0 to 220	1 3/4"	5 amp @ 120V AC	Polypropylene	3/4	NPT	Male	NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G	NEMA 4	4909K65	000000


						B	1	NPT	Male	0.5	200 psi @ 70° F	0 to 220	2 7/8"	5 amp @ 120V AC	304 Stainless Steel	3/4	NPT	Male	NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G	NEMA 4	4909K13	000000




								316 Stainless Steel Body

								C	1 1/2	NPT	Male	0.7	100 psi @ 70° F	0 to 275	13 3/16"	10 amp @ 120V AC	316 Stainless Steel	3/4	NPT	Female	NEC Class I Divisions 1, 2 Groups C, D NEC Class II Divisions 1, 2 Groups E, F, G	IP56 NEMA 4	4914K87	00000000

Through-Wall Vertical-Mount Float Switches for Chemicals

Install these switches into an unthreaded hole at the top or bottom of your tank and secure with a nut from inside the tank. They activate process equipment such as pumps or motors when the chemical level in your tank reaches the float.

	Temp. Range, ° F	Insertion Dp.	Switch Starting Position	Switch Designation	Current @ Voltage	Mounting Location	Float Ht.	Overall Dia.	Electrical Connection	Includes		Each
120V AC Input Voltage







	Polypropylene Float

	3/8"	0.7	50 psi @ 70° F	35 to 220	1 1/4"	1 On	SPST-NC	0.12 amp @ 120V AC	Through Wall, Top, Bottom	5/8"	9/16"	Wire Leads	Mounting Nut	50195K73	000000

Vertical-Mount Float Switches for Food and Beverage


Style A	Style B	Style C

Mount these switches into a threaded connection at the top or bottom of your tank. Often used in food-processing applications, they meet NSF/ANSI Standard 169.

	Switches																		Replacement Floats
	Style	Pipe Size	Thread Type	Gender	Min. Specific Gravity	Max. Pressure @ Temp.	Temp. Range, ° F	Insertion Dp.	Switch Starting Position	Switch Designation	Current @ Voltage	Mounting Location	Float Ht.	Overall Dia.	Electrical Connection	Certification		Each		Each
120V AC/240V AC Input Voltage







				Polypropylene Float

				A	1/8	NPT	Male	0.9	100 psi @ 70° F	35 to 220	1 7/8"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Top, Bottom	1"	1"	Wire Leads	UL Recognized Component, CSA Certified	50195K93	000000	50195K96	000000


				A	1/4	NPT	Male	0.87	100 psi @ 70° F	35 to 220	2 7/8"	1 Off/1 On	SPST-NO SPST-NC	0.5 amp @ 120V AC	Top, Bottom	2"	1 1/2"	Wire Leads	UL Recognized Component, CSA Certified	50195K13	00000	50195K97	00000




						PVDF Float

						A	1/8	NPT	Male	0.85	15 psi @ 70° F	35 to 220	1 7/8"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Top, Bottom	1"	1"	Wire Leads	UL Recognized Component, CSA Certified	44785K13	00000	44785K18	00000




								316 Stainless Steel Float

								B	1/8	NPT	Male	0.8	300 psi @ 70° F	35 to 390	1 7/8"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Top, Bottom	1 3/16"	1 1/8"	Wire Leads	UL Recognized Component, CSA Certified	4646K83	00000	4646K89	00000


								B	1/4	NPT	Male	0.65	200 psi @ 70° F	35 to 390	2 15/16"	1 Off/1 On	SPST-NO SPST-NC	0.5 amp @ 120V AC	Top, Bottom	2 1/8"	2 1/8"	Wire Leads	UL Recognized Component, CSA Certified	4646K85	00000	4646K87	00000
								B	1/4	NPT	Male	0.65	200 psi @ 70° F	35 to 480	2 15/16"	1 Off/1 On	SPST-NO SPST-NC	0.5 amp @ 120V AC	Top, Bottom	2 1/8"	2 1/8"	Wire Leads	UL Recognized Component, CSA Certified	4646K15	00000	4646K87	00000
								C	1/4	NPT	Male	0.8	500 psi @ 70° F	35 to 390	2 7/8"	1 Off/1 On	SPST-NO SPST-NC	1 amp @ 120V AC	Top, Bottom	2 1/16"	2 1/16"	Wire Leads	—	4646K53	000000	4646K87	00000
								C	1/4	NPT	Male	0.8	750 psi @ 70° F	35 to 300	2 7/8"	1 Off/1 On	SPST-NO SPST-NC	0.83 amp @ 120V AC	Top, Bottom	2 1/16"	2 1/16"	Wire Leads	UL Recognized Component, CSA Certified	4646K23	000000	4646K87	00000

Replacement Float Clips

		Each
Replacement Clip for 1/4 Pipe Size Floats	4646K86	00000
Replacement Clip for 1/8 Pipe Size Polypropylene Floats	50195K95	0000
Replacement Clip for 1/8 and 3/8 Pipe Size 316 Stainless Steel Floats	4646K88	0000
Replacement Clip for PVDF Floats	44785K17	0000

Hazardous Location Float Switches for Chemicals


Style A	Style B

Designed for use in areas where flammable substances are present, these switches are CSA certified for hazardous locations. Mount them through a tank wall.

Style A—Style A meet Class I, Divisions 1 and 2, Groups A, B, C, and D; Class II, Divisions 1 and 2, Groups E, F, and G; and Class III, Divisions 1 and 2.

Style B—Style B meet Class I, Divisions 1 and 2, Groups C and D; Class II, Divisions 1 and 2, Groups E, F, and G; and Class III, Divisions 1 and 2.

		Pipe											Conduit
	Style	Size	Thread Type	Gender	Min. Specific Gravity	Max. Pressure @ Temp.	Temp. Range, ° F	Insertion Dp.	Switch Starting Position	Switch Designation	Current @ Voltage	Electrical Connection	Trade Size	Thread Type	Gender	Certification		Each
120V AC/240V AC Input Voltage







				316 Stainless Steel Body and Float

				A	1/2	NPT	Male	0.7	300 psi @ 70° F	0 to 390	4 5/8"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Wire Leads	1/4	NPT	Male	UL Recognized Component, CSA Certified, CE Marked	46815K11	0000000


				A	1/2	NPT	Male	0.7	300 psi @ 70° F	0 to 390	4 5/8"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Wire Leads	1/2	NPT	Male	UL Recognized Component, CSA Certified, CE Marked	46815K22	000000
				A	1	NPT	Male	0.7	300 psi @ 70° F	0 to 390	4 5/8"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Wire Leads	1/2	NPT	Male	UL Recognized Component, CSA Certified, CE Marked	46815K21	000000
				B	1 1/2	NPT	Male	0.4	1,500 psi @ 70° F	0 to 300	3 1/4"	1 Off/1 On	SPST-NO SPST-NC	0.83 amp @ 120V AC	Wire Leads	1/2	NPT	Male	CSA Certified, FM Approved	5300K55	000000
				B	2	NPT	Male	0.4	1,500 psi @ 70° F	0 to 300	3 1/4"	1 Off/1 On	SPST-NO SPST-NC	0.83 amp @ 120V AC	Wire Leads	1/2	NPT	Male	CSA Certified, FM Approved	5300K58	000000

Through-Wall Vertical-Mount Float Switches for Water

	Temp. Range, ° F	Insertion Dp.	Switch Starting Position	Switch Designation	Current @ Voltage	Mounting Location	Float Ht.	Overall Dia.	Electrical Connection	Includes		Each
120V AC/240V AC Input Voltage







	Polypropylene Float

	3/8"	0.9	150 psi @ 70° F	35 to 150	1 9/16"	1 Off/1 On	SPST-NO SPST-NC	0.17 amp @ 120V AC	Through Wall, Top, Bottom	1"	1"	Wire Leads	Mounting Nut	50195K76	000000

Vertical-Mount Float Switches with Bracket for Fuels and Oils

Use the included bracket to mount these switches to the inside of your tank. They activate process equipment such as pumps or motors when the diesel fuel, hydraulic fluid, or oil level in your tank reaches the float.

												Mounting
	Min. Specific Gravity	Max. Pressure @ Temp.	Temp. Range, ° F	Insertion Dp.	Switch Starting Position	Switch Designation	Current @ Voltage	Mounting Location	Float Ht.	Overall Dia.	Electrical Connection	Fasteners Included	No. of Holes	Hole Dia.		Each
120V AC/240V AC Input Voltage







				Buna-N Float

				0.55	150 psi @ 70° F	35 to 140	3 3/16"	1 On	SPST-NC	0.17 amp @ 120V AC	Top, Bottom	1 9/16"	2 5/8"	Wire Leads	No	2	9/32"	4879K23	0000000


				0.55	150 psi @ 70° F	35 to 140	3 3/16"	1 On	SPST-NC	0.4 amp @ 120V AC	Top, Bottom	1 9/16"	2 5/8"	Wire Leads	No	2	9/32"	4879K27	000000

Vertical-Mount Float Switches with Brackets for Chemicals

Use the included bracket to mount these switches to the inside of your tank. They activate process equipment such as pumps or motors when the chemical level in your tank reaches the float. A splash guard minimizes false switch activation caused by splashing liquid.

316 Stainless Steel Float—Choose switches with a 316 stainless steel float for durability in harsh conditions.

	Insertion Dp.	Switch Starting Position	Switch Designation	Current @ Voltage	Mounting Location	Float Ht.	Overall Dia.		Each
120V AC/240V AC Input Voltage







	Polypropylene Float with Splash Guard

	0.85	100 psi @ 70° F	35 to 220	3 7/8"	1 Off/1 On	SPST-NO SPST-NC	0.5 amp @ 120V AC	Top, Bottom	2"	2 1/2"	4666K73	0000000




			316 Stainless Steel Float with Splash Guard

			0.65	85 psi @ 70° F	35 to 230	3 7/8"	1 Off/1 On	SPST-NO SPST-NC	0.5 amp @ 120V AC	Top, Bottom	2"	2 1/2"	4666K74	000000

Hazardous Location Float Switches for Water

For use in locations with flammable gases and combustible dust, these switch are UL listed and CSA certified for Class I, Divisions 1 and 2, Groups C and D; and Class II, Divisions 1 and 2, Groups E, F, and G. Mount them vertically through the top of your tank. They're rated NEMA 4 for protection from washdowns.

	Pipe											Float			Conduit
	Size	Thread Type	Gender	Min. Specific Gravity	Max. Pressure @ Temp.	Temp. Range, ° F	Insertion Dp.	Switch Starting Position	Switch Designation	Current @ Voltage	Mounting Location	Lg.	Dia.	Electrical Connection	Trade Size	Thread Type	Gender	Certification		Each
120V AC/240V AC Input Voltage







				Brass Body and 316 Stainless Steel Float

				1 1/2	NPT	Male	0.7	100 psi @ 70° F	35 to 275	5 1/4"	1 Off or 1 On	SPDT	10 amp @ 120V AC	Top	4 1/2"	1 5/8"	Wire Leads	3/4	NPT	Female	UL Listed, CSA Certified, FM Approved	5363N13	0000000


				1 1/2	NPT	Male	0.7	100 psi @ 70° F	35 to 275	7 1/4"	1 Off or 1 On	SPDT	10 amp @ 120V AC	Top	4 1/2"	1 5/8"	Wire Leads	3/4	NPT	Female	UL Listed, CSA Certified, FM Approved	5363N16	000000
				1 1/2	NPT	Male	0.7	100 psi @ 70° F	35 to 275	9 1/4"	1 Off or 1 On	SPDT	10 amp @ 120V AC	Top	4 1/2"	1 5/8"	Wire Leads	3/4	NPT	Female	UL Listed, CSA Certified, FM Approved	4914K96	000000
				2	NPT	Male	0.7	100 psi @ 70° F	35 to 275	9 1/4"	1 Off or 1 On	SPDT	10 amp @ 120V AC	Top	4 1/2"	1 5/8"	Wire Leads	3/4	NPT	Female	UL Listed, CSA Certified, FM Approved	5363N11	000000

Vertical-Mount Float Switches for Chemicals


Float Switch	Float Switch with Splash Guard

Mount these switches from outside the tank through a threaded connection at the top or bottom of your tank. They activate process equipment such as pumps or motors when the chemical level in your tank reaches the float.

316 Stainless Steel Float—Choose switches with a 316 stainless steel float for durability in harsh conditions.

Splash Guard—Switches with splash guard minimize false switch activation caused by splashing liquid.

	Min. Specific Gravity	Max. Pressure @ Temp.	Temp. Range, ° F	Insertion Dp.	Switch Starting Position	Switch Designation	Current @ Voltage	Mounting Location	Float Ht.	Overall Dia.	Electrical Connection		Each
120V AC/240V AC Input Voltage







	Polypropylene Float

	1/4	NPT	Male	0.85	100 psi @ 70° F	35 to 220	2 7/8"	1 Off/1 On	SPST-NO SPST-NC	0.5 amp @ 120V AC	Top, Bottom	2"	1 1/2"	Wire Leads	50195K85	000000


	1/4	NPT	Male	0.85	100 psi @ 70° F	35 to 220	2 7/8"	1 Off/1 On	SPST-NO SPST-NC	1 amp @ 120V AC	Top, Bottom	2"	1 1/2"	Wire Leads	50195K62	00000




			Polypropylene Float with Splash Guard

			1/8	NPT	Male	0.9	100 psi @ 70° F	35 to 220	1 7/8"	1 Off/1 On	SPST-NO SPST-NC	0.3 amp @ 120V AC	Top, Bottom	1"	1 1/2"	Wire Leads	50195K94	00000


			1/4	NPT	Male	0.85	100 psi @ 70° F	35 to 220	2 7/8"	1 Off/1 On	SPST-NO SPST-NC	0.5 amp @ 120V AC	Top, Bottom	2"	2"	Wire Leads	50195K84	00000




					PVDF Float with Splash Guard

					1/8	NPT	Male	0.95	15 psi @ 70° F	35 to 220	1 7/8"	1 Off/1 On	SPST-NO SPST-NC	0.3 amp @ 120V AC	Top, Bottom	1"	1 1/2"	Wire Leads	44785K16	00000




							316 Stainless Steel Float with Splash Guard

							1/4	NPT	Male	0.65	200 psi @ 70° F	35 to 480	2 15/16"	1 Off/1 On	SPST-NO SPST-NC	0.5 amp @ 120V AC	Top, Bottom	2 1/8"	2 3/8"	Wire Leads	4646K16	000000

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

Mount these switches through an unthreaded hole in your tank wall and secure with a nut from inside the tank. Often used in food-processing applications, they meet NSF/ANSI Standard 169.

	Switches														Replacement Floats
	For Hole Dia.	Min. Specific Gravity	Max. Pressure @ Temp.	Temp. Range, ° F	Insertion Dp.	Switch Starting Position	Switch Designation	Current @ Voltage	Mounting Location	Electrical Connection	Includes	Certification		Each		Each
120V AC/240V AC Input Voltage







				316 Stainless Steel Body and Float

				3/8"	0.8	300 psi @ 70° F	35 to 390	2 3/16"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Through Wall	Wire Leads	Mounting Nut	UL Recognized Component, CSA Certified	46815K17	000000	4646K89	000000

Replacement Float Clips

Through-Wall Horizontal-Mount Float Switches for Chemicals


Float Switch	Float Switch with Splash Guard

Mount these switches through an unthreaded hole in your tank wall and secure with a nut from outside the tank. They activate process equipment such as pumps or motors when the chemical level in your tank reaches the float.

Splash Guard—Switches with splash guard minimize false switch activation caused by splashing liquid.

	Switches													Replacement Floats
	For Hole Dia.	Min. Specific Gravity	Max. Pressure @ Temp.	Temp. Range, ° F	Insertion Dp.	Switch Starting Position	Switch Designation	Current @ Voltage	Mounting Location	Electrical Connection	Includes		Each		Each
120V AC/240V AC Input Voltage







				316 Stainless Steel Body and Float with Splash Guard

				3/8"	0.8	300 psi @ 70° F	-40 to 390	2 9/16"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Through Wall	Wire Leads	Mounting Nut	46815K18	0000000	4646K89	000000




						316 Stainless Steel Body and Float

						1/2"	0.8	100 psi @ 70° F	-40 to 390	3 3/16"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Through Wall	Wire Leads	Mounting Nut	46815K23	000000	———	0

Float Switches for Slurries and Thick Liquids


Float Switch	Float Switch with Adjustable Level

A polypropylene float makes these switches buoyant even in viscous liquids. Hang them in your tank for level monitoring that doesn’t require installation through a tank wall.

									Float
	Cable Lg., ft.	Min. Specific Gravity	Max. Pressure @ Temp.	Temp. Range, ° F	Switch Starting Position	Switch Designation	Current @ Voltage	Dp. Set Point	Dia.	Ht.	Electrical Connection	Certification		Each
120V AC/240V AC Input Voltage







				Polypropylene Float

				16	0.7	28 psi @ 70° F	15 to 140	1 On	SPST-NC	6 amp @ 120V AC	10"	6 3/4"	6 1/8"	Wire Leads	CSA Certified	47025K38	0000000


				16	0.95	28 psi @ 70° F	15 to 140	1 On	SPST-NC	6 amp @ 120V AC	10"	3"	4 7/8"	Wire Leads	CSA Certified	47025K16	000000




						Polypropylene Float with Adjustable Level

						16	0.7	28 psi @ 70° F	15 to 140	1 On	SPDT	6 amp @ 120V AC	10" to 50"	6 3/4"	6 1/8"	Wire Leads	CSA Certified	47025K48	000000


						16	0.95	28 psi @ 70° F	15 to 140	1 On	SPDT	6 amp @ 120V AC	10" to 40"	3"	4 7/8"	Wire Leads	CSA Certified	47025K27	000000

Horizontal-Mount Float Switches for Chemicals


Switch	Switch with Splash Guard

Install these switches into a threaded connection in your tank wall from outside the tank. They activate process equipment such as pumps or motors when the chemical level in your tank reaches the float.

Splash Guard—Switches with splash guard minimize false switch activation caused by splashing liquid.

	Pipe											Conduit
	Size	Thread Type	Gender	Min. Specific Gravity	Max. Pressure @ Temp.	Temp. Range, ° F	Insertion Dp.	Switch Starting Position	Switch Designation	Current @ Voltage	Electrical Connection	Trade Size	Thread Type	Gender		Each
120V AC/240V AC Input Voltage







				PVDF Body and Float

				1/2	NPT	Male	0.85	100 psi @ 70° F	-40 to 220	2 3/4"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Wire Leads	1/2	NPT	Male	5082K21	000000




						PVDF Body and Float with Splash Guard

						1	NPT	Male	0.85	100 psi @ 70° F	-40 to 220	1 7/8"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Wire Leads	1/2	NPT	Male	5082K22	000000




								Polypropylene Body and Float

								1/2	NPT	Male	0.7	100 psi @ 70° F	-40 to 220	2 3/4"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Wire Leads	1/4	NPT	Male	46515K43	00000




										Polypropylene Body and Float with Splash Guard

										1	NPT	Male	0.7	100 psi @ 70° F	-40 to 220	1 7/8"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Wire Leads	—	—	—	46515K71	00000


										1	NPT	Male	0.7	100 psi @ 70° F	-40 to 220	1 7/8"	1 Off/1 On	SPST-NO SPST-NC	0.28 amp @ 120V AC	Wire Leads	1/2	NPT	Male	46515K81	00000