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	Switching Voltage Switching Voltage	Show

	Switching Voltage Switching Voltage	Hide

	Maximum Setpoint Maximum Setpoint

	For Use With For Use With

	Operates On Operates On

Pressure

Differential Pressure

Vacuum

	Scale Scale

psi

in. of H2O

in. of Hg

	Pipe Size Pipe Size

1/8

1/4

1/2

	Maximum Pressure Maximum Pressure

	Minimum Setpoint Minimum Setpoint

	Switch Starting Position Switch Starting Position

1 Off (Normally Open)

1 Off (Normally Open) or 1
On (Normally Closed)

1 On (Normally Closed)

	Setpoint Adjustability Setpoint Adjustability

Adjustable

	Switching Current Switching Current

10A

15A

	Connection Material Connection Material

Stainless Steel

Aluminum

	Thread Type Thread Type

NPT

	System of Measurement System of Measurement

Inch

	Width Width

2 13/16"

3 1/2"

4 1/8"

	Connection Type Connection Type

Conduit

Pipe

	Connection Style Connection Style

Threaded

	Maximum Process Temperature Maximum Process Temperature

	Gender Gender

Male

Female

	Industry Designation Industry Designation

SPDT

	Conduit Connection Gender Conduit Connection Gender

Female

	Housing Material Housing Material

Aluminum

Plastic

Steel

	Wire Connection Type Wire Connection Type

	Screw Terminals

	For Conduit Trade Size For Conduit Trade Size

1/2

3/4

7/8

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30 Products

About Pressure Switches

For Use With:
Style A: Air, Diesel Fuel, Hydraulic Fluid, Water
Style B: Air, Hydrualic Fluid (Petroleum Based)
Connection Material: See table
Connection: NPT Male
Switching Current:
Style A: 10A
Style B: 15A
Switching Voltage:
Style A: 120V AC/240V AC
Style B: 120V AC/240V AC/480V AC

These medium-pressure switches electrically activate automated controls or alarms when a set pressure is reached. They are single pole, double throw (SPDT), so they switch one circuit on or off. They can be wired normally open (NO) or normally closed (NC). Switches are rated NEMA 1 for indoor use.

Switches with polycarbonate housing absorb vibration to avoid false switch activation caused by high-vibration applications.

						Temperature Range, °F		Conduit
	Setpoint, psi	Approximate Difference Between Setpoint and Reset Point, psi	Max. Pressure, psi	Accuracy	Pipe Size	Environment	Process	For Trade Size	Connection Gender	Specifications Met		Each
Aluminum Connection—Polycarbonate Plastic Housing
B	10-100	1.5	200	±1%	1/4	0° to 160°	0° to 200°	7/8	Female	UL Listed, CE Marked	0000000	0000000
B	30-300	2.5	400	±1%	1/4	0° to 160°	0° to 200°	7/8	Female	UL Listed, CE Marked	0000000	000000

Low-Pressure Switches

For Use With:
Style A: Air, Diesel Fuel, Hydraulic Fluid, Water
Style B: Air, Hydraulic Fluid (Petroleum Based)
Connection Material: See table
Connection: NPT Male
Switching Current:
Style A: 10A
Style B: 15A
Switching Voltage:
Style A: 120V AC/240V AC
Style B: 120V AC/240V AC/480V AC

Sensitive to low pressures, these switches electrically activate automated controls or alarms when a set pressure is reached. They are often used in heating and ventilation systems. Switches are single pole, double throw (SPDT), so they switch one circuit on or off. They can be wired normally open (NO) or normally closed (NC). Switches are rated NEMA 1 for indoor use.

Switches with polycarbonate housing absorb vibration to avoid false switch activation caused by high-vibration applications.

						Temperature Range, °F		Conduit
	Setpoint, psi	Approximate Difference Between Setpoint and Reset Point, psi	Max. Pressure, psi	Accuracy	Pipe Size	Environment	Process	For Trade Size	Connection Gender	Specifications Met		Each
Aluminum Connection—Polycarbonate Plastic Housing
B	3-30	0.85	50	±1%	1/4	0° to 160°	0° to 200°	7/8	Female	UL Listed, CE Marked	0000000	0000000

Washdown High-Pressure Switches

For Use With: Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Water
Connection Material: 316 Stainless Steel
Connection: NPT Female
Switching Current: 15A
Switching Voltage: 120V AC/240V AC/480V AC

These switches are rated NEMA 4X for protection from dirt, washdowns, and corrosion. They electrically activate automated controls or alarms when a set pressure is reached. They are single pole, double throw (SPDT), so they switch one circuit on and off. They can be wired normally open (NO) or normally closed (NC).

					Temperature Range, °F		Conduit
Setpoint, psi	Approximate Difference Between Setpoint and Reset Point, psi	Max. Pressure, psi	Accuracy	Pipe Size	Environment	Process	For Trade Size	Connection	Environmental Rating	Specifications Met		Each
Aluminum Housing
60-400	20	2,400	±1%	1/4	-20° to 150°	20° to 300°	3/4	NPT Female	IEC Zone 1 Groups IIC, IIB, IIA; IEC Zone 21 Groups IIIC, IIIB, IIIA; IP66; NEC Class I Divisions 1, 2 Groups B, C, D; NEC Class II Divisions 1, 2 Groups E, F, G; NEMA 4X	ATEX II 2GD Ex d IIC T6 Gb Ex tb IIIC T85°C Db, C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed	00000000	0000000
150-1,000	98	12,000	±1%	1/4	-20° to 150°	20° to 300°	3/4	NPT Female	IEC Zone 1 Groups IIC, IIB, IIA; IEC Zone 21 Groups IIIC, IIIB, IIIA; IP66; NEC Class I Divisions 1, 2 Groups B, C, D; NEC Class II Divisions 1, 2 Groups E, F, G; NEMA 4X	ATEX II 2GD Ex d IIC T6 Gb Ex tb IIIC T85°C Db, C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed	00000000	000000

High-Temperature Washdown High-Pressure Switches

For Use With: Air, Hydraulic Fluid, Water
Connection Material: 316 Stainless Steel
Connection: NPT Female
Switching Current: 15A
Switching Voltage: 120V AC/240V AC/480V AC

These switches can handle higher temperatures than other high-pressure switches. They electrically activate automated controls or alarms when a set pressure is reached. Switches are rated NEMA 4X for protection from dirt, washdowns, and corrosion. They are single pole, double throw (SPDT), so they switch one circuit on or off. They can be wired normally open (NO) or normally closed (NC).

					Temperature Range, °F		Conduit
Setpoint, psi	Approximate Difference Between Setpoint and Reset Point, psi	Max. Pressure, psi	Accuracy	Pipe Size	Environment	Process	For Trade Size	Connection	Specifications Met		Each
Epoxy-Coated Aluminum Housing
5-30	2	1,500	±1.5%	1/2	-40° to 160°	-70° to 300°	1/2	NPT Female	UL Listed, C-UL Listed, CE Marked, UL 508	00000000	0000000
10-100	4.5	1,500	±1.5%	1/2	-40° to 160°	-70° to 300°	1/2	NPT Female	UL Listed, C-UL Listed, CE Marked, UL 508	00000000	000000
15-300	10	1,500	±1.5%	1/2	-40° to 160°	-70° to 300°	1/2	NPT Female	UL Listed, C-UL Listed, CE Marked, UL 508	00000000	000000
20-500	17	1,500	±1.5%	1/2	-40° to 160°	-70° to 300°	1/2	NPT Female	UL Listed, C-UL Listed, CE Marked, UL 508	00000000	000000
80-1,700	62	2,000	±1.5%	1/2	-40° to 160°	-70° to 300°	1/2	NPT Female	UL Listed, C-UL Listed, CE Marked, UL 508	00000000	000000

Washdown Medium-Pressure Switches

For Use With: Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Water
Connection Material: 316 Stainless Steel
Connection: NPT Female
Switching Current: 15A
Switching Voltage: 120V AC/240V AC/480V AC

These switches are rated NEMA 4X for protection from dirt, washdowns, and corrosion. Switches electrically activate automated controls or alarms when a set pressure is reached. They are single pole, double throw (SPDT), so they switch one circuit on and off. They can be wired normally open (NO) or normally closed (NC).

					Temperature Range, °F		Conduit
Setpoint, psi	Approximate Difference Between Setpoint and Reset Point, psi	Max. Pressure, psi	Accuracy	Pipe Size	Environment	Process	For Trade Size	Connection	Environmental Rating	Specifications Met		Each
Aluminum Housing
2 1/4-15	1	500	±1%	1/4	-20° to 150°	20° to 300°	3/4	NPT Female	IEC Zone 1 Groups IIC, IIB, IIA; IEC Zone 21 Groups IIIC, IIIB, IIIA; IP66; NEC Class I Divisions 1, 2 Groups B, C, D; NEC Class II Divisions 1, 2 Groups E, F, G; NEMA 4X	ATEX II 2GD Ex d IIC T6 Gb Ex tb IIIC T85°C Db, C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed	00000000	0000000
4 1/2-30	1	500	±1%	1/4	-20° to 150°	20° to 300°	3/4	NPT Female	IEC Zone 1 Groups IIC, IIB, IIA; IEC Zone 21 Groups IIIC, IIIB, IIIA; IP66; NEC Class I Divisions 1, 2 Groups B, C, D; NEC Class II Divisions 1, 2 Groups E, F, G; NEMA 4X	ATEX II 2GD Ex d IIC T6 Gb Ex tb IIIC T85°C Db, C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed	00000000	000000
9-60	3	500	±1%	1/4	-20° to 150°	20° to 300°	3/4	NPT Female	IEC Zone 1 Groups IIC, IIB, IIA; IEC Zone 21 Groups IIIC, IIIB, IIIA; IP66; NEC Class I Divisions 1, 2 Groups B, C, D; NEC Class II Divisions 1, 2 Groups E, F, G; NEMA 4X	ATEX II 2GD Ex d IIC T6 Gb Ex tb IIIC T85°C Db, C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed	00000000	000000
15-100	4.5	1,000	±1%	1/4	-20° to 150°	20° to 300°	3/4	NPT Female	IEC Zone 1 Groups IIC, IIB, IIA; IEC Zone 21 Groups IIIC, IIIB, IIIA; IP66; NEC Class I Divisions 1, 2 Groups B, C, D; NEC Class II Divisions 1, 2 Groups E, F, G; NEMA 4X	ATEX II 2GD Ex d IIC T6 Gb Ex tb IIIC T85°C Db, C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed	00000000	000000
30-200	12	1,000	±1%	1/4	-20° to 150°	20° to 300°	3/4	NPT Female	IEC Zone 1 Groups IIC, IIB, IIA; IEC Zone 21 Groups IIIC, IIIB, IIIA; IP66; NEC Class I Divisions 1, 2 Groups B, C, D; NEC Class II Divisions 1, 2 Groups E, F, G; NEMA 4X	ATEX II 2GD Ex d IIC T6 Gb Ex tb IIIC T85°C Db, C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed	00000000	000000

Washdown Low-Pressure Switches

These switches are rated NEMA 4 or 4X for protection from dirt and washdowns. Sensitive to low pressures, they electrically activate automated controls or alarms when a set pressure is reached. Switches are single pole, double throw (SPDT), so they switch one circuit on or off. They can be wired normally open (NO) or normally closed (NC).

Style D has two setpoints, so it can control two independent circuits.

For Washdown and Corrosive Environments (NEMA 4X)

For Use With: Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Water
Connection Material: 316 Stainless Steel
Connection: 1/4 NPT Female
Switching Current: 15A
Switching Voltage: 120V AC/240V AC/480V AC

					Temp. Range, °F		Conduit
Style	Setpoint, in. of H2O	Approximate Difference Between Setpoint and Reset Point, in. of H2O	Max. Pressure, psi	Accuracy	Environment	Process	For Trade Size	Connection	Industry Designation	Environmental Rating	Specifications Met		Each
C	4 1/2-30	2.5	20	±1%	-20° to 150°	20° to 300°	3/4	NPT Female	SPDT	IEC Zone 1 Groups IIC, IIB, IIA; IEC Zone 21 Groups IIIC, IIIB, IIIA; IP66; NEC Class I Divisions 1, 2 Groups B, C, D; NEC Class II Divisions 1, 2 Groups E, F, G; NEMA 4X	ATEX II 2GD Ex d IIC T6 Gb Ex tb IIIC T85°C Db, C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed	00000000	0000000
D	4 1/2-30	4.5	20	±1%	-20° to 150°	20° to 300°	3/4	NPT Female	SPDT	IP66; NEMA 4X	CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed	00000000	000000

Oil-Resistant High-Pressure Switches

For Use With: Air, Diesel Fuel, Hydraulic Fluid, Water
Connection Material: 416 Stainless Steel
Connection: NPT Female
Switching Current: 10A
Switching Voltage: 120V AC/240V AC/480V AC

Often used with hydraulic presses, compactors, and machine tools, these switches are rated NEMA 13 for indoor protection from dirt and oil/coolant spraying. Switches electrically activate automated controls or alarms when a set pressure is reached. They are single pole, double throw (SPDT), so they switch one circuit on or off. They can be wired normally open (NO) or normally closed (NC).

					Temperature Range, °F		Conduit
Setpoint, psi	Approximate Difference Between Setpoint and Reset Point, psi	Max. Pressure, psi	Accuracy	Pipe Size	Environment	Process	For Trade Size	Connection		Each
Aluminum Housing
100-1,500	65	1,500	±2%	1/4	-20° to 165°	-20° to 165°	1/2	NPT Female	0000000	0000000
235-3,400	180	3,400	±2%	1/4	-20° to 165°	-20° to 165°	1/2	NPT Female	0000000	000000
425-6,000	240	6,000	±2%	1/4	-20° to 165°	-20° to 165°	1/2	NPT Female	0000000	000000

Oil-Resistant Medium-Pressure Switches

For Use With: Air, Diesel Fuel, Hydraulic Fluid, Water
Connection Material: 416 Stainless Steel
Connection: NPT Female
Switching Current: 10A
Switching Voltage: 120V AC/240V AC/480V AC

					Temperature Range, °F		Conduit
Setpoint, psi	Approximate Difference Between Setpoint and Reset Point, psi	Max. Pressure, psi	Accuracy	Pipe Size	Environment	Process	For Trade Size	Connection		Each
Aluminum Housing
20-200	12	200	±2%	1/4	-20° to 165°	-20° to 165°	1/2	NPT Female	0000000	0000000
75-540	22	540	±2%	1/4	-20° to 165°	-20° to 165°	1/2	NPT Female	0000000	000000

Low Differential Pressure Switches

For Use With: Air
Connection Material: Aluminum
Connection: NPT Female
Switching Current: 15A
Switching Voltage: 120V AC/240V AC/480V AC

Often used with ovens, dryers, and HVAC systems, these switches detect small differences in pressure. When the differential pressure exceeds your setpoint, the switch is activated. Use them to automate controls or activate an alarm in your process. Switches are single pole, double throw (SPDT), so they switch one circuit on or off. They can be wired normally open (NO) or normally closed (NC).

					Temperature Range, °F		Conduit
Setpoint, in. of H2O	Approximate Difference Between Setpoint and Reset Point, in. of H2O	Max. Pressure, in. of H2O	Accuracy	Pipe Size	Environment	Process	For Trade Size	Connection Gender	Specifications Met		Each
Zinc-Plated Steel Housing
0.07-0.15	0.04	45	± 3%	1/8	-30° to 180°	-30° to 180°	7/8	Female	CE Marked, CSA Certified, FM Approved, UL Recognized Component	00000000	000000
0.15-0.55	0.1	45	± 3%	1/8	-30° to 180°	-30° to 180°	7/8	Female	CE Marked, CSA Certified, FM Approved, UL Recognized Component	00000000	00000
0.4-1.6	0.16	45	± 3%	1/8	-30° to 180°	-30° to 180°	7/8	Female	CE Marked, CSA Certified, FM Approved, UL Recognized Component	00000000	00000
1.4-5 1/2	0.3	45	± 3%	1/8	-30° to 180°	-30° to 180°	7/8	Female	CE Marked, CSA Certified, FM Approved, UL Recognized Component	00000000	00000
3-11 3/4	0.4	45	± 3%	1/8	-30° to 180°	-30° to 180°	7/8	Female	CE Marked, CSA Certified, FM Approved, UL Recognized Component	00000000	00000
4-20	0.5	45	± 3%	1/8	-30° to 180°	-30° to 180°	7/8	Female	CE Marked, CSA Certified, FM Approved, UL Recognized Component	00000000	00000

Vacuum Switches

Connection: NPT Male
Switching Current:
Style A: 10A
Style B: 15A
Switching Voltage:
Style A: 120V AC/240V AC
Style B: 120V AC/240V AC/480V AC

These switches electrically activate automated controls or alarms when a set vacuum is reached. Switches are single pole, double throw (SPDT), so they switch one circuit on or off. They can be wired normally open (NO) or normally closed (NC). Switches are rated NEMA 1 for indoor use.

Switches with polycarbonate housing absorb vibration to avoid false switch activation caused by high-vibration applications.

						Temperature Range, °F		Conduit
	Setpoint, in. of Hg	Approximate Difference Between Setpoint and Reset Point, in. of Hg	Max. Vacuum, in. of Hg	Accuracy	Pipe Size	Environment	Process	For Trade Size	Connection Gender	Specifications Met		Each
Aluminum Connection—Polycarbonate Plastic Housing
B	30-0	2	30	±1%	1/4	0° to 160°	0° to 200°	7/8	Female	UL Listed, CE Marked	0000000	0000000

Hazardous Location Vibration-Monitoring Switches

Get NEMA 4 and IP66 protection from dirt and water. Switch is rated for hazardous locations for Class I, Divisions 1 and 2, Groups C and D; and Class II, Divisions 1 and 2, Groups E, F, and G. If vibration or shock exceeds a set activation point, the contacts actuate to either shut down your machine or activate an alarm. Reset the switch with the push of a button. The activation point is adjustable between 0 to 5 gravity units (g) at 0 to 60 Hz.

Activation Point		Switching			Conduit					Mounting Slot
Range, g	Frequency Range, Hz	Current, A	Voltage	Temp. Range, °F	Trade Size	Thread Type	Gender	Mounting Fasteners Included	Number of Mounting Holes	Lg.	Wd.	Environmental Rating		Each
1 Off (Normally Open) or 1 On (Normally Closed) Switch Starting Position
SPDT
0-5	0-60	15	125V AC 480V AC	-40° to 155°	3/4	NPT	Female	No	4	3/4"	3/8"	NEC Class I Divisions 1, 2 Groups C, D NEC Class II Divisions 1, 2 Groups E, F, G IP66 NEMA 4	0000000	0000000