Adjustable Deadbands | McMaster-Carr

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46 Products

About Pressure Switches

Electronic Pressure Switches for Compressed Air

With a set pressure range that works for most air systems, these switches send signals when your air system reaches a set pressure to your programmable logic controller (PLC) to activate automated controls and alarms. All meet at least one American, Canadian, or European safety standard.

Monitor your pressure on the display and change your setpoint, reset point, scaling, and other settings using the buttons. An adjustable reset point means you can control the amount of pressure change before the switch resets, also known as deadband or differential. Choose anywhere within the setpoint range for your reset point.

Switches with a configurable output give you the flexibility to choose between PNP, NPN, or IO Link. IO Link lets you remotely control and monitor switches from your PLC or PC when you connect an IO Link controller (not included).

IP65 rated switches protect from dust and light rinsing.

Add a square panel-mount bracket (sold separately) to mount these switches to a control panel for easy viewing and adjusting.

For technical drawings and 3-D models, click on a part number.

Switches

PNP Output
Setpoint, psi	Approximate Difference Between Setpoint and Reset Point	Max. Continuous Pressure, psi	Accuracy	Max. Switching Current	Process Temp. Range, °F	Connection Material	Wire Connection Type	For Use With	Environmental Rating		Each
1/8 NPT Male Pipe Connection
0-145	Adjustable	145	±0.2%	25 mA @ 24 V DC	25° to 120°	Nickel-Plated Brass	Wire Leads	Air, Argon, Nitrogen	IP40	0000000	000000
1/4" Female Push-to-Connect Tube Connection
0-145	Adjustable	145	±0.2%	25 mA @ 24 V DC	25° to 120°	Nickel-Plated Brass	Wire Leads	Air, Argon, Nitrogen	IP40	0000000	00000
NPN Output
1/8 NPT Male Pipe Connection
0-145	Adjustable	145	±0.2%	25 mA @ 24 V DC	25° to 120°	Nickel-Plated Brass	Wire Leads	Air, Argon, Nitrogen	IP40	0000000	00000
1/4" Female Push-to-Connect Tube Connection
0-145	Adjustable	145	±0.2%	25 mA @ 24 V DC	25° to 120°	Nickel-Plated Brass	Wire Leads	Air, Argon, Nitrogen	IP40	0000000	00000
Configurable Output—PNP, NPN, IO LInk
1/8 NPT Male Pipe Connection
0-145	Adjustable	145	±0.2%	35 mA @ 30 V DC	25° to 120°	Nickel-Plated Brass	Wire Leads	Air, Argon, Nitrogen	IP65	0000000	000000
1/8 BSPT Male Pipe Connection
0-145	Adjustable	145	±0.2%	35 mA @ 30 V DC	25° to 120°	Nickel-Plated Brass	Wire Leads	Air, Argon, Nitrogen	IP65	0000000	000000
M5 × 0.8mm Female Pipe Connection
0-145	Adjustable	145	±0.2%	35 mA @ 30 V DC	25° to 120°	Nickel-Plated Brass	Wire Leads	Air, Argon, Nitrogen	IP65	0000000	000000

Square Panel-Mount Brackets

For Panel Cutout
Ht.	Wd.	Mounting Hole Style		Each
1 7/32"	1 7/32"	Straight	0000000	00000

Electronic Pressure Switches

When these switches reach a set pressure, they send electronic signals to your programmable logic controller (PLC) to activate automated controls or alarms. Easily adjust the setpoint by twisting the external ring. An indicating pointer and incremental markings make sure adjustments are precise. When you have your setpoint, tighten the locking ring to prevent unintentional changes. Pair these switches with an M12 socket to quickly connect and disconnect them.

Rated IP67, these switches seal out dust and water from temporary submersion. All are UL and C-UL listed as well as CE marked, which means they meet U.S., Canadian, and European safety standards.

Switches for two circuits function like single pole, double throw (SPDT) switches. When the switches reach the setpoint, they turn one circuit from off to on (normally open) and another from on to off (normally closed). They have an adjustable reset, which means you can control the amount of pressure change before the switch resets. This pressure difference is commonly referred to as deadband and differential. Use the second external ring to change the reset point anywhere along the setpoint range.

For technical drawings and 3-D models, click on a part number.

Switches for Two Circuits—One Off (Normally Open) and One On (Normally Closed)

Switch for Two Circuits

4-Pole
Micro
M12 Plug

Four-Pole Micro M12 Plug Connection
Setpoint, psi	Approximate Difference Between Setpoint and Reset Point	Maximum Continuous Pressure, psi	Maximum Short-Term Pressure, psi	Signal Output Type	Accuracy	Maximum Switching Current	Process Temperature Range, °F	Connection Material	For Use With	Environmental Rating		Each
1/4 NPT Male Pipe Connection
7 1/2-145	Adjustable	360	360	PNP	±2.5%	500 mA @ 32 V DC	-10° to 175°	316 Stainless Steel	Air, Diesel Fuel, Hydraulic Fluid, Oil, Water	IP67	0000000	0000000
75-1,450	Adjustable	2,900	2,900	PNP	±2.5%	500 mA @ 32 V DC	-10° to 175°	316 Stainless Steel	Air, Diesel Fuel, Hydraulic Fluid, Oil, Water	IP67	0000000	000000
290-5,800	Adjustable	8,700	8,700	PNP	±2.5%	500 mA @ 32 V DC	-10° to 175°	316 Stainless Steel	Air, Diesel Fuel, Hydraulic Fluid, Oil, Water	IP67	0000000	000000
1/4 BSPP Male Pipe Connection
7 1/2-145	Adjustable	360	360	PNP	±2.5%	500 mA @ 32 V DC	-10° to 175°	316 Stainless Steel	Air, Diesel Fuel, Hydraulic Fluid, Oil, Water	IP67	0000000	000000
18-363	Adjustable	870	870	PNP	±2.5%	500 mA @ 32 V DC	-10° to 175°	316 Stainless Steel	Air, Diesel Fuel, Hydraulic Fluid, Oil, Water	IP67	0000000	000000
75-1,450	Adjustable	2,900	2,900	PNP	±2.5%	500 mA @ 32 V DC	-10° to 175°	316 Stainless Steel	Air, Diesel Fuel, Hydraulic Fluid, Oil, Water	IP67	0000000	000000
181-3,625	Adjustable	5,800	5,800	PNP	±2.5%	500 mA @ 32 V DC	-10° to 175°	316 Stainless Steel	Air, Diesel Fuel, Hydraulic Fluid, Oil, Water	IP67	0000000	000000
290-5,800	Adjustable	8,700	8,700	PNP	±2.5%	500 mA @ 32 V DC	-10° to 175°	316 Stainless Steel	Air, Diesel Fuel, Hydraulic Fluid, Oil, Water	IP67	0000000	000000

BSPP to NPT Thread Adapter

Straight Adapter

Connection	Pipe Size (A)	Pipe Size (B)		Each
BSPP Female × NPT Male	1/4	1/4	0000000	000000

Dual-Setpoint Electronic Pressure Switches with Digital Display

When these switches reach either of their two set pressures—both of which can be controlled from the display—they send digital signals to your programmable logic controller (PLC) to activate automated controls. This means you could turn on a pump at one setpoint if pressure drops too low and open a valve at another if pressure rises too high. These switches could also be used to signal an alarm before switching off a pump. For remote control and monitoring from your PLC or PC, connect an IO Link controller (not included). You’ll also need to set one of the outputs to use IO Link instead of a PNP or NPN signal.

Change your setpoint, reset point, scaling, and other settings using the display’s buttons. An adjustable reset point means you can control the amount of pressure change before the switch resets, also known as deadband or differential. Choose anywhere within the setpoint range for your reset point. The head rotates, so you can view the display from the best angle. To reduce stress on pipes in your pressure system, secure these switches against a wall or other structure with a mounting bracket (sold separately). Use these switches with an M12 cable (sold separately) to quickly connect and disconnect them.

All are rated IP65 and IP67, so they seal out dust and water from washdowns and brief submersion. UL and C-UL listed, all meet U.S. and Canadian safety standards.

For technical drawings and 3-D models, click on a part number.

Switches

Switch

4-Pole
Micro
M12 Plug

4-Pole Micro M12 Plug Connection
Setpoint, psi	Approximate Difference Between Setpoint and Reset Point	Max. Continuous Pressure, psi	Signal Output Type	Communication Protocol	Accuracy	Max. Switching Current	Process Temp. Range, °F	Connection Material	Scale	For Use With		Each
1/4 NPT Male Pipe Connection
0-14	Adjustable	145	NPN, PNP	IO Link	±0.2%	35 mA @ 30 V DC	-10° to 175°	316L Stainless Steel	in. of Hg, kPa, mbar, psi	Air, Argon, Diesel Fuel, Hydraulic Fluid, Inert Gas, Nitrogen, Oil, Water	0000000	0000000
0-36	Adjustable	290	NPN, PNP	IO Link	±0.2%	35 mA @ 30 V DC	-10° to 175°	316L Stainless Steel	bar, kPa, psi	Air, Argon, Diesel Fuel, Hydraulic Fluid, Inert Gas, Nitrogen, Oil, Water	0000000	000000
0-360	Adjustable	1,015	NPN, PNP	IO Link	±0.2%	35 mA @ 30 V DC	-10° to 175°	316L Stainless Steel	bar, kPa, psi	Air, Argon, Diesel Fuel, Hydraulic Fluid, Inert Gas, Nitrogen, Oil, Water	0000000	000000
0-1,450	Adjustable	1,810	NPN, PNP	IO Link	±0.2%	35 mA @ 30 V DC	-10° to 175°	316L Stainless Steel	bar, kPa, psi	Air, Argon, Diesel Fuel, Hydraulic Fluid, Inert Gas, Nitrogen, Oil, Water	0000000	000000
0-3,600	Adjustable	7,250	NPN, PNP	IO Link	±0.2%	35 mA @ 30 V DC	-10° to 175°	316L Stainless Steel	bar, kPa, psi	Air, Argon, Diesel Fuel, Hydraulic Fluid, Inert Gas, Nitrogen, Oil, Water	0000000	000000
0-5,800	Adjustable	11,580	NPN, PNP	IO Link	±0.2%	35 mA @ 30 V DC	-10° to 175°	316L Stainless Steel	bar, kPa, psi	Air, Argon, Diesel Fuel, Hydraulic Fluid, Inert Gas, Nitrogen, Oil, Water	0000000	000000

Hex Clamp Mounting Brackets

Hex Clamp Bracket

		Length, mm
Material	Color	(A)	(B)	(C)	Mounting Fasteners Included	Mounting Hole Style	For Screw Size		Each
Plastic	Black	50	64	40	Yes	Straight	M5	00000000	000000

Micro M12 Cables with Socket

							Housing Thread
Number of Poles	Coding	Face Diameter	Voltage	Current	Wire Lead Gauge	Cable OD	Size	Pitch, mm	Type	Temperature Range, °F	Environmental Rating		Each
12ft. Cable Lead Lg.
4	A	0.3"	250V AC/250V DC	4A	22	0.25"	M12	1	Metric	0° to 220°	IP67	0000000	000000

Adjustable-Reset Pressure Switches

Choose when these switches reset to control the pressure range between when they activate and deactivate, commonly referred to as deadband and differential. You can adjust their reset point anywhere along the setpoint range. When they reach the set pressure, these switches power equipment, signal controls, or trigger alarms. They’re single pole, double throw (SPDT) and can either turn one device from off to on (normally open) or on to off (normally closed). UL listed and CSA certified, all meet American and Canadian safety standards. Those that are CE marked meet European safety standards.

Switches with an on/off indicator tell you the status of your equipment, letting you monitor your equipment even when it’s out of sight.

All protect against some corrosion. NEMA 1 rated switches should only be used indoors. NEMA 4X and IP66 rated switches can be used in dirty and wet areas exposed to washdowns. NEMA 4X switches also stand up to weather and have increased protection against corrosion, similar to 304 stainless steel.

Switches

Switch

Screw Terminals
Setpoint, psi	Approximate Difference Between Setpoint and Reset Point	Max. Continuous Pressure, psi	Max. Short-Term Pressure, psi	Accuracy	Max. Switching Current	Process Temp. Range, °F	Connection Material	For Use With	Environmental Rating	Specifications Met		Each
1/4 NPT Female Pipe Connection
2 1/2-13	Adjustable	15	500	±1%	10 A @ 125 V AC 10 A @ 250 V AC 500 mA @ 125 V DC 250 mA @ 250 V DC	0° to 150°	316 Stainless Steel	Air, Argon, Diesel Fuel, Gasoline, Inert Gas, Natural Gas, Nitrogen, Water	IP66; NEMA 4X	UL Listed, CSA Certified, CE Marked, FM Approved	0000000	0000000
3-27	Adjustable	30	500	±1%	10 A @ 125 V AC 10 A @ 250 V AC 500 mA @ 125 V DC 250 mA @ 250 V DC	0° to 150°	316 Stainless Steel	Air, Argon, Diesel Fuel, Gasoline, Inert Gas, Natural Gas, Nitrogen, Water	IP66; NEMA 4X	UL Listed, CSA Certified, CE Marked, FM Approved	0000000	000000
5-54	Adjustable	60	500	±1%	10 A @ 125 V AC 10 A @ 250 V AC 500 mA @ 125 V DC 250 mA @ 250 V DC	0° to 150°	316 Stainless Steel	Air, Argon, Diesel Fuel, Gasoline, Inert Gas, Natural Gas, Nitrogen, Water	IP66; NEMA 4X	UL Listed, CSA Certified, CE Marked, FM Approved	0000000	000000
10-90	Adjustable	100	1,000	±1%	10 A @ 125 V AC 10 A @ 250 V AC 500 mA @ 125 V DC 250 mA @ 250 V DC	0° to 150°	316 Stainless Steel	Air, Argon, Diesel Fuel, Gasoline, Inert Gas, Natural Gas, Nitrogen, Water	IP66; NEMA 4X	UL Listed, CSA Certified, CE Marked, FM Approved	0000000	000000
18-180	Adjustable	200	1,000	±1%	10 A @ 125 V AC 10 A @ 250 V AC 500 mA @ 125 V DC 250 mA @ 250 V DC	0° to 150°	316 Stainless Steel	Air, Argon, Diesel Fuel, Gasoline, Inert Gas, Natural Gas, Nitrogen, Water	IP66; NEMA 4X	UL Listed, CSA Certified, CE Marked, FM Approved	0000000	000000
45-360	Adjustable	400	2,400	±1%	10 A @ 125 V AC 10 A @ 250 V AC 500 mA @ 125 V DC 250 mA @ 250 V DC	0° to 150°	316 Stainless Steel	Air, Argon, Diesel Fuel, Gasoline, Inert Gas, Natural Gas, Nitrogen, Water	IP66; NEMA 4X	UL Listed, CSA Certified, CE Marked, FM Approved	0000000	000000
75-540	Adjustable	600	2,400	±1%	10 A @ 125 V AC 10 A @ 250 V AC 500 mA @ 125 V DC 250 mA @ 250 V DC	0° to 150°	316 Stainless Steel	Air, Argon, Diesel Fuel, Gasoline, Inert Gas, Natural Gas, Nitrogen, Water	IP66; NEMA 4X	UL Listed, CSA Certified, CE Marked, FM Approved	0000000	000000

Switches with On/Off Indicator

Switch with On/Off Indicator

Screw Terminals
Setpoint, psi	Approximate Difference Between Setpoint and Reset Point	Max. Continuous Pressure, psi	Max. Short-Term Pressure, psi	Accuracy	Max. Switching Current	Process Temp. Range, °F	Connection Material	For Use With	Environmental Rating	Specifications Met		Each
1/4 NPT Male Pipe Connection
1/8-15	Adjustable	15	15	±1%	10 A @ 120 V AC 10 A @ 240 V AC	35° to 180°	Brass	Air, Diesel Fuel, Hydraulic Fluid, Water	NEMA 1	UL Listed, CSA Certified	0000000	0000000
2-60	Adjustable	60	60	±1%	10 A @ 120 V AC 10 A @ 240 V AC	35° to 180°	Brass	Air, Diesel Fuel, Hydraulic Fluid, Water	NEMA 1	UL Listed, CSA Certified	0000000	000000
5-100	Adjustable	100	100	±1%	10 A @ 120 V AC 10 A @ 240 V AC	35° to 180°	Brass	Air, Diesel Fuel, Hydraulic Fluid, Water	NEMA 1	UL Listed, CSA Certified	0000000	000000
5-150	Adjustable	150	150	±1%	10 A @ 120 V AC 10 A @ 240 V AC	35° to 180°	Brass	Air, Diesel Fuel, Hydraulic Fluid, Water	NEMA 1	UL Listed, CSA Certified	0000000	000000
10-200	Adjustable	200	200	±1%	10 A @ 120 V AC 10 A @ 240 V AC	35° to 180°	Brass	Air, Diesel Fuel, Hydraulic Fluid, Water	NEMA 1	UL Listed, CSA Certified	0000000	00000000
10-300	Adjustable	300	300	±1%	10 A @ 120 V AC 10 A @ 240 V AC	35° to 180°	Brass	Air, Diesel Fuel, Hydraulic Fluid, Water	NEMA 1	UL Listed, CSA Certified	0000000	00000000

Adjustable-Reset Pressure Switches with Digital Display

Kick off automated controls, signal alarms, or activate equipment based on pressure changes while checking the pressure, setpoint, and reset point on the display. The adjustable reset point lets you control the amount of pressure change, also known as deadband and differential, before the switch resets. Adjust it anywhere within the setpoint range. Turn the external adjustment knob by hand to set pressure quickly. These are single pole, double throw (SPDT) and can be installed to turn one circuit from off to on (normally open) or from on to off (normally closed).

To power the display, these switches need a separate electrical input from the one used for switching.

These switches are IP and NEMA rated, so they’re dust tight and protected against water from washdowns and weather, as well as sprays of oil and coolant.

For technical drawings and 3-D models, click on a part number.

110V AC Input Voltage
Setpoint, psi	Approximate Difference Between Setpoint and Reset Point	Max. Continuous Pressure, psi	Max. Short-Term Pressure, psi	Accuracy	Max. Switching Current	Process Temperature Range, °F	Wire Connection Type	Connection Material	For Use With	Environmental Rating		Each
1/4 NPT Male Pipe Connection
3-60	Adjustable	60	120	±0.5%	10 A @ 250 V AC 30 A @ 30 V DC	-20° to 160°	Screw Terminals	316 Stainless Steel	Air, Hydraulic Fluid, Water	IP66, NEMA 4X, NEMA 13	0000000	0000000
5-100	Adjustable	100	200	±0.5%	10 A @ 250 V AC 30 A @ 30 V DC	-20° to 160°	Screw Terminals	316 Stainless Steel	Air, Hydraulic Fluid, Water	IP66, NEMA 4X, NEMA 13	0000000	000000
10-200	Adjustable	200	400	±0.5%	10 A @ 250 V AC 30 A @ 30 V DC	-20° to 160°	Screw Terminals	316 Stainless Steel	Air, Hydraulic Fluid, Water	IP66, NEMA 4X, NEMA 13	0000000	000000
150-3,000	Adjustable	3,000	4,500	±0.5%	10 A @ 250 V AC 30 A @ 30 V DC	-20° to 160°	Screw Terminals	316 Stainless Steel	Air, Hydraulic Fluid, Water	IP66, NEMA 4X, NEMA 13	0000000	000000
24V DC Input Voltage
1/4 NPT Male Pipe Connection
10-200	Adjustable	200	400	±0.5%	10 A @ 250 V AC 30 A @ 30 V DC	-20° to 160°	Screw Terminals	316 Stainless Steel	Air, Hydraulic Fluid, Water	IP66, NEMA 4X, NEMA 13	0000000	000000

Dual-Setpoint Electronic Pressure Switches for Compressed Air

Compatible with most air systems, these switches send digital signals to a programmable logic controller (PLC) to trigger separate processes when they reach either of their two set pressures. For example, they’ll activate a compressor if the pressure is too low or a relief valve if the pressure is too high. Or use them to signal an alarm before switching off a compressor. Some of these switches also work with liquids and gases, so they can be built into hydraulic systems and wet or humid environments, such as cleaning lines.

Monitor your pressure on the display and change your setpoints, reset points, scaling, and other settings using the buttons. An adjustable reset point means you can control the amount of pressure change before the switch resets, also known as deadband or differential. Choose anywhere within the setpoint range for your reset point. Add a panel-mount bracket (sold separately) to mount these switches to a control panel for easy viewing and adjusting.

Rated IP65, they seal out dust and water from washdowns. Switches are UL and C-UL recognized components and CE marked to meet American, Canadian, and European safety standards.

For technical drawings and 3-D models, click on a part number.

Switches

For Use With Air, Argon, Inert Gas, and Nitrogen
Setpoint, psi	Approximate Difference Between Setpoint and Reset Point	Max. Continuous Pressure, psi	Max. Short-Term Pressure, psi	Signal Output Type	Accuracy	Max. Switching Current	Process Temperature Range, ° F	Connection Material	Environmental Rating		Each
Wire Leads—1/8 NPT Male Pipe Connection
15-150	Adjustable	150	215	PNP	±0.2%	35 mA @ 24 V DC	25° to 120°	Nickel-Plated Brass	IP65	0000000	0000000
For Use With Air, Argon, Hydraulic Fluid, Inert Gas, Nitrogen, and Water
Wire Leads—1/4 NPT Male Pipe Connection
15-150	Adjustable	150	290	PNP	±0.2%	35 mA @ 24 V DC	25° to 120°	304 Stainless Steel	IP65	0000000	000000
15-300	Adjustable	300	580	PNP	±0.2%	35 mA @ 24 V DC	25° to 120°	304 Stainless Steel	IP65	0000000	000000

Square Panel-Mount Brackets

For Panel Cutout
Ht.	Wd.	Mounting Hole Style		Each
1 7/32"	1 7/32"	Straight	0000000	00000