NEC Class I Divisions1, 2 Groups A, B, C, D Switches

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38 Products

Choosing a Proximity Switch

Matching Flow Diagrams to Replace an Air Directional Control Valve

Choosing an Air Directional Control Valve

About Hazardous Location Environmental Ratings

About Float Switches

About Pressure Switches

Hazardous Location Rotatable DC Metallic-Object Proximity Switches

Twist the sensor to detect metallic objects where explosive dust or gas may be present—the sensor rotates for front, side, top, or bottom sensing. These switches are UL and C-UL listed as well as ATEX and IECEx certified for hazardous locations. Their NAMUR signal produces low current and low voltage, so they won’t spark or ignite. You must connect them to a barrier (sold separately), which reduces the current and voltage that enters your hazardous area. Install the barrier in a separate location that doesn’t contain explosive gas or dust.

Because you can rotate their sensor, these switches make good replacements for limit switches with actuators that could break when hit. They’re often known as inductive proximity switches and detect objects even if they’re covered by water, oil, dirt, or a surface finish. Sensing distance is based on the type of material that’s sensed; the distance listed is for mild steel. Send signals from these switches to programmable logic controllers (PLCs) to support automated processes.

These switches have a 4-pole micro M12 plug that connects to cables with a socket (sold separately), so you can quickly connect and disconnect them. You can also check on them from any angle, thanks to LED status indicators on their corners. All are CE marked for safety.

To view switch wiring diagrams, select a part number and click Product Detail.

Flush switches, also called embeddable and shielded switches, are more accurate than projecting switches at close range. They also won’t interfere with each other’s signals when installed close together. Their sensor face mounts evenly with any material, including metal.

Projecting switches, also known as non-embeddable and unshielded switches, sense objects farther away than flush switches. But, the area around the sensor must be metal free.

IP rated, all switches seal out dust and water from high-pressure washdowns. IP67- and IP68-rated switches also withstand some submersion.

Flush Mounting Style

4-Pole
Micro
M12 Plug

Projecting Mounting Style

Plastic Housing
Switch Starting Position	Lg., mm	Wd., mm	Ht., mm	Max. Sensing Distance, mm	Signal Output Type	Input Voltage	Current Output	Circuit Protection	Temp. Range, °F	Environmental Rating		Each
Flush with 4-Pole Micro M12 Plug
1 On (Normally Closed)	67	40	40	20	NAMUR	8V DC-8.5V DC	10mA	Reverse Polarity Short Circuit	-10° to 210°	IEC Zone 0 Groups IIC, IIB, IIA NEC Class III Divisions 1, 2 IEC Zone 20 Groups IIIC, IIIB, IIIA NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G IP66 IP69K	0000000	0000000
1 On (Normally Closed)	118	40	40	20	NAMUR	8V DC-8.5V DC	10mA	Reverse Polarity Short Circuit	-10° to 210°	IEC Zone 0 Groups IIC, IIB, IIA NEC Class III Divisions 1, 2 IEC Zone 20 Groups IIIC, IIIB, IIIA NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G IP67 IP69K	00000000	000000
Projecting with 4-Pole Micro M12 Plug
1 On (Normally Closed)	67	40	40	40	NAMUR	8V DC-8.5V DC	10mA	Reverse Polarity Short Circuit	-10° to 210°	IEC Zone 0 Groups IIC, IIB, IIA NEC Class III Divisions 1, 2 IEC Zone 20 Groups IIIC, IIIB, IIIA NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G IP69K	0000000	000000
1 On (Normally Closed)	118	40	40	40	NAMUR	8V DC-8.5V DC	10mA	Reverse Polarity Short Circuit	-10° to 210°	IEC Zone 0 Groups IIC, IIB, IIA NEC Class III Divisions 1, 2 IEC Zone 20 Groups IIIC, IIIB, IIIA NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G IP68 IP69K	00000000	000000

NAMUR Cables with Socket

Straight Connector

90° Elbow Connector

			6 1/2 ft. Cable Lead Lg.		16 ft. Cable Lead Lg.
Electrical Connector Component		Face Dia.		Each		Each
Socket	Straight Connector with Wire Leads	0.3"	0000000	000000	0000000	000000
Socket	90° Elbow Connector with Wire Leads	0.3"	0000000	00000	0000000	00000

Barriers

Barrier

	Inputs				Outputs
Operating Voltage	Voltage	Current	No. of	Signal Type	Current	No. of	Signal Type	Switching Frequency	Environmental Rating		Each
Plastic Housing
115V AC	10V DC	8mA	1	NAMUR	2 A @ 253 V AC 2 A @ 40 V DC 4 A @ 126 V AC	1	Relay	10 Hz	Associated Apparatus for IEC Zone 0 Groups IIC, IIB, IIA Associated Apparatus for IEC Zone 20 Groups IIIC, IIIB, IIIA IP20	0000000	0000000
24V DC	10V DC	8mA	1	NAMUR	0.05 A @ 24 V DC	2	Transistor	5 kHz	Associated Apparatus for IEC Zone 0 Groups IIC, IIB, IIA Associated Apparatus for IEC Zone 20 Groups IIIC, IIIB, IIIA IP20	0000000	000000

Hazardous Location Electrically Operated Air Directional Control Valves

These valves are rated for environments where hazardous material is present. Often used to extend and then retract a cylinder at different speeds, they create two actions and have two exhaust ports, which allows you to control the speed of each action by attaching a flow control valve to each exhaust port. They direct airflow from the inlet to your equipment and exhaust return airflow to create motion. Apply voltage to the electrical connection to actuate. Return actuation is by spring, so they go back to their original position when voltage is removed. Also known as 4-way valves.

5/3 (closed center) valves close all ports in the off position to stop equipment in a locked position with air pressure holding it in place.

Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve.

Hazardous location environmental ratings indicate whether manufacturers have included safety features in products to facilitate their safe use in a hazardous environment. Before selecting a product for a hazardous location, ensure it is rated for your environment.

Threaded Female Inlet × Threaded Female Outlet—Threaded Exhaust

Single Solenoid

Double Solenoid

										Overall
No. of Flow Ports	Inlet Size	Outlet Size	Max. Flow Rate, scfm @ 100 psi	Flow Coefficient (Cv)	Pressure Range, psi	Vacuum Rating, in. of Hg	Environmental Rating	Voltage	Wire Connection Type	Lg.	Wd.	Ht.	Mounting Fasteners Included		Each
5/2 Flow Pattern
Single Solenoid
5	1/4 NPT	1/4 NPT	65.34	1.7	14-145	28	NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEMA 3S NEMA 6P NEMA 7 NEMA 9	24V DC	Wire Leads	6"	1"	2 7/8"	No	0000000	0000000
5	1/4 NPT	1/4 NPT	65.34	1.7	14-145	28	NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEMA 3S NEMA 6P NEMA 7 NEMA 9	120V AC	Wire Leads	6"	1"	2 7/8"	No	0000000	000000
5/3 (Closed Center) Flow Pattern
Double Solenoid
5	1/4 NPT	1/4 NPT	65.34	1.7	14-145	28	NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEMA 3S NEMA 6P NEMA 7 NEMA 9	24V DC	Wire Leads	9 3/8"	1"	2 7/8"	No	0000000	000000
5	1/4 NPT	1/4 NPT	65.34	1.7	14-145	28	NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEMA 3S NEMA 6P NEMA 7 NEMA 9	120V AC	Wire Leads	9 3/8"	1"	2 7/8"	No	0000000	000000

Manifolds for Single Solenoid, 24V DC Valves

No. of				O'all
Flow Ports	Inlet Ports	Exhaust Ports	Inlet Size	Wd.	Ht.	Mount Type	Mounting Fasteners Included	Choose a No. of Stations		Each
3/8 NPTF Inlet Size
6	2	4	3/8 NPTF	2 3/4"	1 1/2"	Screw In	No	2, 3, 4	0000000	000000
6	2	4	3/8 NPTF	2 3/4"	1 1/2"	Screw In	No	5, 6, 8	0000000	000000

Station Plates for Manifolds

Body Material		Each
Aluminum	00000000	000000

Hazardous Location Pressure Switches

Built with an explosion-proof enclosure to meet NEMA 7 and 9 standards for hazardous locations, these switches were tested and verified by UL and CSA for use where explosive liquids, dust, and gas are present. When they reach the set pressure, they power equipment, signal controls, or trigger alarms. They’re 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). In addition to being UL listed and CSA certified, these switches are CE marked, so they also meet European safety standards.

All switches are IP and NEMA rated for use outdoors and protection from some corrosion, dust, and spraying water.

IP67 and NEMA 4X rated switches seal out water from temporary submersion and have increased protection against corrosion, similar to 304 stainless steel.

Wire Leads
	Setpoint, psi	Approximate Difference Between Setpoint and Reset Point, psi	Max. Continuous Pressure, psi	Accuracy	Max. Switching Current	Connection Material	For Use With	Environmental Rating		Each
1/4 NPT Male Pipe Connection
A	8-60	5	60	±5%	5 A @ 125 V AC 5 A @ 250 V AC	316 Stainless Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Natural Gas, Water	NEC Class I Division 1 Groups A, B, C, D NEC Class II Division 1 Groups E, F ,G IP67 NEMA 4X NEMA 7 NEMA 9	00000000	0000000
A	10-100	9	100	±5%	5 A @ 125 V AC 5 A @ 250 V AC	316 Stainless Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Natural Gas, Water	NEC Class I Division 1 Groups A, B, C, D NEC Class II Division 1 Groups E, F ,G IP67 NEMA 4X NEMA 7 NEMA 9	00000000	000000
A	20-200	16	200	±2%	5 A @ 125 V AC 5 A @ 250 V AC	316 Stainless Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Natural Gas, Water	NEC Class I Division 1 Groups A, B, C, D NEC Class II Division 1 Groups E, F ,G IP67 NEMA 4X NEMA 7 NEMA 9	00000000	000000
A	50-500	60	500	±2%	5 A @ 125 V AC 5 A @ 250 V AC	316 Stainless Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Natural Gas, Water	NEC Class I Division 1 Groups A, B, C, D NEC Class II Division 1 Groups E, F ,G IP67 NEMA 4X NEMA 7 NEMA 9	00000000	000000
A	100-1,000	87	1,000	±2%	5 A @ 125 V AC 5 A @ 250 V AC	316 Stainless Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Natural Gas, Water	NEC Class I Division 1 Groups A, B, C, D NEC Class II Division 1 Groups E, F ,G IP67 NEMA 4X NEMA 7 NEMA 9	00000000	000000
A	200-2,000	165	2,000	±2%	5 A @ 125 V AC 5 A @ 250 V AC	316 Stainless Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Natural Gas, Water	NEC Class I Division 1 Groups A, B, C, D NEC Class II Division 1 Groups E, F ,G IP67 NEMA 4X NEMA 7 NEMA 9	00000000	000000
1/2 NPT Female Pipe Connection
B	6-30	2	30	±1%	5 A @ 125 V AC 5 A @ 250 V AC	316 Stainless Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Natural Gas, Water	NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G IP66 NEMA 4 NEMA 7 NEMA 9	00000000	000000
B	12-60	2	60	±1%	5 A @ 125 V AC 5 A @ 250 V AC	316 Stainless Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Natural Gas, Water	NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G IP66 NEMA 4 NEMA 7 NEMA 9	00000000	000000
B	20-100	3.5	100	±1%	5 A @ 125 V AC 5 A @ 250 V AC	316 Stainless Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Natural Gas, Water	NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G IP66 NEMA 4 NEMA 7 NEMA 9	00000000	000000
B	40-200	6.5	200	±1%	5 A @ 125 V AC 5 A @ 250 V AC	316 Stainless Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Natural Gas, Water	NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Division 1 Groups E, F ,G IP66 NEMA 4 NEMA 7 NEMA 9	00000000	000000
B	80-400	11	400	±1%	5 A @ 125 V AC 5 A @ 250 V AC	316 Stainless Steel	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Natural Gas, Water	NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G IP66 NEMA 4 NEMA 7 NEMA 9	00000000	000000

Horizontal-Mount Hazardous Location Float Switches for Fuels and Oils

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” (normally open) or from “on” to “off” (normally closed).

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

	Pipe									Conduit
Style	Size	Thread Type	Gender	Min. Specific Gravity	Max. Pressure	Temp. Range, °F	Insertion Dp.	Current	Float Material	Trade Size	Thread Type	Gender	Environmental Rating		Each
120V AC/240V AC Input Voltage
303 Stainless Steel Body
A	1	NPT	Male	0.9	2,000 psi @ 70° F	0° to 220°	1 3/4"	5 A @ 120 V AC	Polypropylene Plastic	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	0000000	0000000
B	1	NPT	Male	0.5	200 psi @ 70° F	0° to 220°	2 7/8"	5 A @ 120 V 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	0000000	000000

Hazardous Location Float Switches for Chemicals

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 meets 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.

	Pipe												Conduit
Style	Size	Thread Type	Gender	Min. Specific Gravity	Max. Pressure	Temp. Range, °F	Insertion Dp.	Switch Starting Position	Industry Designation	Current	Float Material	Electrical Connection	Trade Size	Thread Type	Gender		Each
120V AC/240V AC Input Voltage
316 Stainless Steel Body
A	1/2	NPT	Male	0.7	300 psi @ 70° F	0° to 390°	4 5/8"	1 Off (Normally Open)/1 On (Normally Closed)	SPST-NO SPST-NC	0.28 A @ 120 V AC	316 Stainless Steel	Wire Leads	1/4	NPT	Male	00000000	0000000
A	1/2	NPT	Male	0.7	300 psi @ 70° F	0° to 390°	4 5/8"	1 Off (Normally Open)/1 On (Normally Closed)	SPST-NO SPST-NC	0.28 A @ 120 V AC	316 Stainless Steel	Wire Leads	1/2	NPT	Male	00000000	000000
A	1	NPT	Male	0.7	300 psi @ 70° F	0° to 390°	4 5/8"	1 Off (Normally Open)/1 On (Normally Closed)	SPST-NO SPST-NC	0.28 A @ 120 V AC	316 Stainless Steel	Wire Leads	1/2	NPT	Male	00000000	000000

Fixed-Setpoint Hazardous Location Flow Switches

Safe to use where flammable gases and combustible dust may be present, these switches activate or deactivate when your flow reaches a factory-set level. All are UL listed for hazardous environments. Because their set point is fixed, they’re ready to go, making them easy to install. They actuate when your flowing liquid or gas pushes their paddle into a set position. These switches are single pole, double throw (SPDT) and can turn one device from off to on (normally open) or from on to off (normally closed). They must be mounted horizontally to function accurately.

These switches are calibrated with water and air. They can also be used with other liquids and gases but may not measure accurately if their viscosity is significantly different.

			Set Point						Conduit
Pipe Size	Thread Type	Gender	For Liquids, gpm	For Gases, scfm	Max. Pressure	Temp. Range, °F	Voltage	Max. Switching Current	Trade Size	Thread Type	Gender	End-to-End Lg.		Each
304 Stainless Steel Body
1/2	NPT	Female	1.5	6.5	2000 psi @ 70° F	-4° to 220°	120V AC/ 240V AC	5 A @ 120 V AC	3/4	NPT	Male	2 1/4"	00000000	0000000
3/4	NPT	Female	2	10	2000 psi @ 70° F	-4° to 220°	120V AC/ 240V AC	5 A @ 120 V AC	3/4	NPT	Male	2 5/8"	00000000	000000
1	NPT	Female	3	14	2000 psi @ 70° F	-4° to 220°	120V AC/ 240V AC	5 A @ 120 V AC	3/4	NPT	Male	3"	00000000	000000
2	NPT	Female	10	43	2000 psi @ 70° F	-4° to 220°	120V AC/ 240V AC	5 A @ 120 V AC	3/4	NPT	Male	4 3/4"	00000000	00000000

Hazardous Location Flow Switches

UL listed for use where flammable gases or combustible dusts may be present, these flow switches activate or deactivate equipment when your flow rate reaches a set point. Use the adjustment screw to select their set point. They actuate when your flowing liquid or gas pushes their paddle into a certain position determined by the set point. All are single pole, double throw (SPDT) and can either turn one device from off to on (normally open) or on to off (normally closed). Mount them horizontally. Rated NEMA 4, they also protect against weather and washdowns.

These flow switches are calibrated with water and air. You can use them with other liquids and gases, but they may not measure accurately if the viscosity is different from water or air.

			Set Point						Conduit
Pipe Size	Thread Type	Gender	For Liquids, gpm	For Gases, scfm	Max. Pressure	Temp. Range, °F	Voltage	Max. Switching Current	Trade Size	Thread Type	Gender	End-to-End Lg.		Each
304 Stainless Steel Body
1/2	NPT	Female	0.04 to 0.75	0.18 to 2.7	1450 psi @ 70° F	-4° to 220°	120V AC/ 240V AC	5 A @ 120 V AC	3/4	NPT	Male	3 5/8"	00000000	0000000