Choosing a Proximity Switch
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Choosing an Electrical Switch
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Heavy Duty Limit Switches
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Rugged enough for mining operations, these limit switches require a high actuation force, like heavy rocks moving on a conveyor. They open and close a circuit as quickly as a snap-acting switch but have a larger actuator for larger objects. The roller on the end of the lever arm reduces friction to prevent wear and tear on the switch. Rated NEMA 4 and 13 as well as IP67, these switches are protected from dirt, oil spraying, and temporary submersion.
To determine if you need a right or left actuation direction, stand facing where you'll put the switch. If objects will be passing to the right, you'll need a right actuation direction. If they'll be passing to the left, you'll need a left actuation direction.
For technical drawings and 3-D models, click on a part number.
Housing | |||||||||||||||
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Actuation Direction | No. of Circuits Controlled | Switch Starting Position | Switch Action | Industry Designation | Switching Current @ Voltage | Max. Voltage | Actuation Force | Operating Temp. Range, °F | Actuator Ht. | For Max. Cable OD | Lg. | Ht. | Dp. | Each | |
Aluminum Housing with Screw Terminals | |||||||||||||||
Right | 2 | 1 Off (Normally Open) and 1 On (Normally Closed) | Springs Back (Momentary) | DPST-1NO/1NC | 20 A @ 120 V AC, 5 A @ 120 V DC | 600V AC 600V DC | 150 in.-oz. | -10° to 185° | 5.7" | 1/2" | 2.3" | 5" | 2" | 0000000 | 0000000 |
Manual-Reset Safety Limit Switches
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Prevent equipment from automatically restarting—these switches must be manually reset each time they're actuated. Pull the knob to reset. Positive-force contacts open the circuit when actuated, even if a spring fails or the contacts stick. These switches send a signal to your circuit when an object hits the actuator—for instance, a box on a conveyor runs into the switch, stopping the conveyor. They open and close circuits as fast as snap-acting switches, but they have a bigger actuator for large objects.
Rated IP67, these switches seal out water if they’re washed down or briefly submersed.
Styles B and C have a roller lever actuator that allows parts to glide across the actuation surface with minimal friction. Style C have an actuator that allows you to adjust its height, making it easier to align the switch with the target during installation.
For technical drawings and 3-D models, click on a part number.
Housing | |||||||||||||||||
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Style | No. of Circuits Controlled | Switch Starting Position | Switch Action | Industry Designation | Switching Current @ Voltage | Max. Voltage | Operating Temp. Range, °F | Actuator Ht. | Wire Connection Type | No. of Terminals | Lg. | Ht. | Dp. | Housing Material | Conduit Thread Size | Each | |
Plunger Actuator Style | |||||||||||||||||
A | 2 | 1 Off (Normally Open) and 1 On (Normally Closed) | Stays Switched (Maintained) | DPST-1NO/1NC | 10 A @ 240 V AC, 2.5 A @ 125 V DC | 250V DC 300V AC | -22° to 158° | 1" | Screw Terminals | 4 | 1.2" | 3.4" | 1.2" | Plastic | M20 | 0000000 | 000000 |
Roller Lever Actuator Style | |||||||||||||||||
B | 2 | 1 Off (Normally Open) and 1 On (Normally Closed) | Stays Switched (Maintained) | DPST-1NO/1NC | 10 A @ 240 V AC, 2.5 A @ 125 V DC | 250V DC 300V AC | -22° to 158° | 2.4" | Screw Terminals | 4 | 1.2" | 3.4" | 1.2" | Plastic | M20 | 0000000 | 00000 |
C | 2 | 1 Off (Normally Open) and 1 On (Normally Closed) | Stays Switched (Maintained) | DPST-1NO/1NC | 10 A @ 240 V AC, 2.5 A @ 125 V DC | 250V DC 300V AC | -22° to 158° | 2.1"-3.9" | Screw Terminals | 4 | 1.2" | 3.4" | 1.2" | Plastic | M20 | 0000000 | 00000 |
Ultra-Miniature Snap-Acting Switches
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Trigger actions in devices as small as phones and drones. The smallest snap-acting switches we offer, these switches fit into the tiniest of spaces and help keep weight to a minimum. Because snap-acting switches open and close circuits faster than other switches—reducing the time that contacts are near one another—they prevent contacts from sticking. They also minimize the chance of arcing, so electricity won’t jump across contacts.
Plunger actuator switches send a signal when the actuator is pushed directly downward. They have a small footprint, reducing the risk of accidental switching.
For technical drawings and 3-D models, click on a part number.
Housing | |||||||||||||||
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No. of Circuits Controlled | Switch Starting Position | Switch Action | Industry Designation | Switching Current @ Voltage | Max. Voltage | Operating Temp. Range, °F | Actuator Ht. | No. of Terminals | Lg. | Ht. | Dp. | Environmental Rating | Pkg. Qty. | Pkg. | |
Plunger Actuator Style | |||||||||||||||
With Solder Pin Terminals | |||||||||||||||
2 | 1 Off (Normally Open) and 1 On (Normally Closed) | Springs Back (Momentary) | DPST-1NO/1NC | 5 A @ 250 V AC | 250V AC | -40° to 185° | 0.07" | 4 | 0.7" | 0.37" | 0.2" | IP40 | 1 | 0000000 | 000000 |
With Tab Terminals | |||||||||||||||
2 | 1 Off (Normally Open) and 1 On (Normally Closed) | Springs Back (Momentary) | DPST-1NO/1NC | 5 A @ 250 V AC | 250V AC | -40° to 185° | 0.06" | 4 | 0.7" | 0.37" | 0.2" | IP40 | 1 | 0000000 | 00000 |
DC Metallic-Object Proximity Switches
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Micro
M12 Plug
Also known as inductive proximity switches, these detect metallic objects even if they’re obscured by water, oil, dirt, or a surface finish. Sensing distance is based on the target material. The distance listed is for mild steel. They’re often used with programmable logic controllers (PLCs) and produce PNP or NPN signal output. To determine the signal output of a switch you are replacing, use Testers for Proximity and Photoelectric Switches (not included).
Flush switches, also known as embeddable or shielded switches, can be mounted so that the sensor face is level with the surface of any material, including metal. They’re more accurate than projecting switches at close range and can be mounted close together without causing interference.
Switches with a plug connect to cables with a socket (sold separately), allowing you to quickly connect and disconnect the switch.
IP67 and IP68 rated switches are protected from temporary submersion.
Also available: If you don’t see the switch you need, please select 6693T999 and specify manufacturer and manufacturer part number.
Switches | Cables with Sockets | |||||||||||||
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Switch Starting Position | Dia., mm | Max. Sensing Distance, mm | Signal Output Type | Input Voltage | Current Output | No. of Wire Leads | Lg., mm | Circuit Protection | Cable Lead Lg., ft. | Temperature Range, °F | Each | Each | ||
Nickel-Plated Brass Housing with Plastic Face (IP67) | ||||||||||||||
Flush with Wire Leads | ||||||||||||||
1 Off (Normally Open) and 1 On (Normally Closed) | 12 | 4 | PNP | 10V DC-30V DC | 200mA | 4 | 72 | Overload Reverse Polarity Short Circuit | 6 1/2 | -10° to 155° | 00000000 | 000000 | 000000 | 00 |
1 Off (Normally Open) and 1 On (Normally Closed) | 12 | 4 | NPN | 10V DC-30V DC | 200mA | 4 | 72 | Overload Reverse Polarity Short Circuit | 6 1/2 | -10° to 155° | 00000000 | 00000 | 000000 | 00 |
1 Off (Normally Open) and 1 On (Normally Closed) | 18 | 8 | PNP | 10V DC-30V DC | 200mA | 4 | 61 | Overload Reverse Polarity Short Circuit | 6 1/2 | -10° to 155° | 00000000 | 00000 | 000000 | 00 |
1 Off (Normally Open) and 1 On (Normally Closed) | 18 | 8 | NPN | 10V DC-30V DC | 200mA | 4 | 61 | Overload Reverse Polarity Short Circuit | 6 1/2 | -10° to 155° | 00000000 | 00000 | 000000 | 00 |
Flush with 4-Pole Micro M12 Plug | ||||||||||||||
1 Off (Normally Open) and 1 On (Normally Closed) | 12 | 4 | PNP | 10V DC-30V DC | 200mA | __ | 70 | Overload Reverse Polarity Short Circuit | __ | -10° to 155° | 00000000 | 00000 | 0000000 | 000000 |
1 Off (Normally Open) and 1 On (Normally Closed) | 12 | 4 | NPN | 10V DC-30V DC | 200mA | __ | 70 | Overload Reverse Polarity Short Circuit | __ | -10° to 155° | 00000000 | 00000 | 0000000 | 00000 |
1 Off (Normally Open) and 1 On (Normally Closed) | 18 | 8 | PNP | 10V DC-30V DC | 200mA | __ | 75 | Overload Reverse Polarity Short Circuit | __ | -10° to 155° | 00000000 | 00000 | 0000000 | 00000 |
1 Off (Normally Open) and 1 On (Normally Closed) | 18 | 8 | NPN | 10V DC-30V DC | 200mA | __ | 75 | Overload Reverse Polarity Short Circuit | __ | -10° to 155° | 00000000 | 00000 | 0000000 | 00000 |
Stainless Steel Housing with Plastic Face (IP67) | ||||||||||||||
Flush with Wire Leads | ||||||||||||||
1 Off (Normally Open) and 1 On (Normally Closed) | 8 | 2 | PNP | 10V DC-30V DC | 200mA | 4 | 43 | Overload Reverse Polarity Short Circuit | 6 1/2 | -10° to 155° | 00000000 | 00000 | 000000 | 00 |
1 Off (Normally Open) and 1 On (Normally Closed) | 8 | 2 | NPN | 10V DC-30V DC | 200mA | 4 | 43 | Overload Reverse Polarity Short Circuit | 6 1/2 | -10° to 155° | 00000000 | 00000 | 000000 | 00 |
Flush with 4-Pole Micro M12 Plug | ||||||||||||||
1 Off (Normally Open) and 1 On (Normally Closed) | 8 | 2 | PNP | 10V DC-30V DC | 200mA | __ | 65 | Overload Reverse Polarity Short Circuit | __ | -10° to 155° | 00000000 | 00000 | 0000000 | 00000 |
1 Off (Normally Open) and 1 On (Normally Closed) | 8 | 2 | NPN | 10V DC-30V DC | 200mA | __ | 65 | Overload Reverse Polarity Short Circuit | __ | -10° to 155° | 00000000 | 00000 | 0000000 | 00000 |
Slot DC Metallic-Object Proximity Switches
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These inductive proximity switches sense metallic objects each time they pass through the slot, even when they’re obscured by water, oil, dirt, or a surface finish. Use them to measure the speed of rotating equipment and to count or detect moving objects, such as sheet metal being fed into a stamping process. Send their signal to programmable logic controllers (PLCs) to support automated processes within your system. Switches are UL and C-UL listed, CE marked, and CSA certified, meeting strict domestic and international safety requirements. They’re also rated IP67 to protect against dust, washdowns, and temporary submersion.
To view switch wiring diagrams, select a part number and click Product Detail.
For technical drawings and 3-D models, click on a part number.
Inside | |||||||||||||||||
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Switch Starting Position | Lg., mm | Ht., mm | Signal Output Type | Switching Frequency | Input Voltage | Current Output | No. of Wire Leads | Lg., mm | Wd., mm | Ht., mm | Circuit Protection | Cable Lead Lg., ft. | Cable OD | Temp. Range, °F | Environmental Rating | Each | |
Plastic Housing | |||||||||||||||||
With Wire Leads | |||||||||||||||||
1 Off (Normally Open) and 1 On (Normally Closed) | 10 | 3.5 | PNP | 3 kHz | 10V DC-30V DC | 100mA | 4 | 15 | 10 | 19 | Reverse Polarity | 1 1/2 | 0.12" | -10° to 185° | IP67 | 0000000 | 000000 |
1 Off (Normally Open) and 1 On (Normally Closed) | 80 | 30 | PNP | 150 Hz | 10V DC-30V DC | 200mA | 4 | 110 | 51 | 84 | Reverse Polarity | 6 1/2 | 0.27" | -10° to 155° | IP67 | 0000000 | 000000 |
Rotatable DC Metallic-Object Proximity Switches
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Micro
M12 Plug
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Turn the face on these switches to sense metallic objects from the front, sides, top, or bottom. They’re a good replacement for limit switches with actuators that often break when hit. Also known as inductive proximity switches, they detect objects even if they’re covered by water, oil, dirt, or a surface finish. They’re often used in conveyor and bin filling systems, refineries, and mills. Sensing distance is based on the type of material being sensed; the distance listed is for mild steel. LED status indicators on the corners mean you can check your switch from any angle. All switches meet American, Canadian, and European safety standards.
You can send PNP or NPN signals from these switches to programmable logic controllers (PLCs). Use Testers for Proximity and Photoelectric Switches to determine the signal output of a switch you’re replacing.
Flush switches, also known as embeddable and shielded switches, are more accurate than projecting switches at close range. They also won’t cause interference when mounted close together. The sensor face mounts evenly with any material, including metal.
Projecting switches, also called non-embeddable and unshielded switches, sense objects farther away than flush switches. But, they require the area around the sensor to be free of metal.
Switches with a 4-pole micro M12 plug connect to cables with a socket (sold separately), so you can quickly connect and disconnect them. To view switch wiring diagrams, select a part number and click Product Detail. Attach switches with screw terminals to optional M12 connectors with a receptacle to convert them to a standard 4-pole M12 plug.
All switches seal out dust and stand up to some submersion. IP69- and IP69K-rated switches also handle high-pressure washdowns.
For technical drawings and 3-D models, click on a part number.
Switches | Cables with Socket | Receptacles | |||||||||||||
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Switch Starting Position | Number of Sensing Positions | Maximum Sensing Distance, mm | Signal Output Type | Input Voltage | Lg., mm | Wd., mm | Ht., mm | Circuit Protection | Temp. Range, °F | Each | Each | Each | |||
Plastic Housing with Plastic Face (IP67)—200mA Current Output | |||||||||||||||
Flush with 4-Pole Micro M12 Plug | |||||||||||||||
1 Off (Normally Open) and 1 On (Normally Closed) | 5 | 20 | PNP | 10V DC-36V DC | 54 | 40 | 40 | Overload Reverse Polarity Short Circuit | -10° to 155° | 00000000 | 0000000 | 0000000 | 000000 | 000000 | 00 |
Plastic Housing with Plastic Face (IP68 and IP69)—200mA Current Output | |||||||||||||||
Flush with 4-Pole Micro M12 Plug | |||||||||||||||
1 Off (Normally Open) and 1 On (Normally Closed) | 5 | 30 | PNP | 10V DC-30V DC | 67 | 40 | 40 | Reverse Polarity Short Circuit | -10° to 155° | 00000000 | 000000 | 0000000 | 00000 | 000000 | 00 |
1 Off (Normally Open) and 1 On (Normally Closed) | 5 | 30 | NPN | 10V DC-30V DC | 67 | 40 | 40 | Reverse Polarity Short Circuit | -10° to 155° | 00000000 | 000000 | 0000000 | 00000 | 000000 | 00 |
Flush with M20 Screw Terminal | |||||||||||||||
1 Off (Normally Open) and 1 On (Normally Closed) | 5 | 30 | PNP | 10V DC-30V DC | 118 | 40 | 40 | Reverse Polarity Short Circuit | -10° to 155° | 00000000 | 000000 | 0000000 | 00000 | 00000000 | 000000 |
1 Off (Normally Open) and 1 On (Normally Closed) | 5 | 30 | NPN | 10V DC-30V DC | 118 | 40 | 40 | Reverse Polarity Short Circuit | -10° to 155° | 00000000 | 000000 | 0000000 | 00000 | 00000000 | 00000 |
Projecting with 4-Pole Micro M12 Plug | |||||||||||||||
1 Off (Normally Open) and 1 On (Normally Closed) | 5 | 50 | PNP | 10V DC-30V DC | 67 | 40 | 40 | Reverse Polarity Short Circuit | -10° to 155° | 00000000 | 000000 | 0000000 | 00000 | 000000 | 00 |
1 Off (Normally Open) and 1 On (Normally Closed) | 5 | 50 | NPN | 10V DC-30V DC | 67 | 40 | 40 | Reverse Polarity Short Circuit | -10° to 155° | 00000000 | 000000 | 0000000 | 00000 | 000000 | 00 |
Projecting with M20 Screw Terminal | |||||||||||||||
1 Off (Normally Open) and 1 On (Normally Closed) | 5 | 50 | PNP | 10V DC-30V DC | 118 | 40 | 40 | Reverse Polarity Short Circuit | -10° to 155° | 00000000 | 000000 | 0000000 | 00000 | 00000000 | 00000 |
1 Off (Normally Open) and 1 On (Normally Closed) | 5 | 50 | NPN | 10V DC-30V DC | 118 | 40 | 40 | Reverse Polarity Short Circuit | -10° to 155° | 00000000 | 000000 | 0000000 | 00000 | 00000000 | 00000 |
Plastic Housing with Plastic Face (IP68 and IP69K)—200mA Current Output | |||||||||||||||
Projecting with M20 Screw Terminal | |||||||||||||||
1 Off (Normally Open) and 1 On (Normally Closed) | 5 | 40 | PNP | 10V DC-30V DC | 118 | 40 | 40 | Overload Reverse Polarity Short Circuit | -10° to 155° | 00000000 | 000000 | 0000000 | 00000 | 00000000 | 00000 |
Flat DC Universal-Object Proximity Switches
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Mount these flat switches to a base or rail. Also known as capacitive proximity switches, they remotely sense both metallic and nonmetallic objects but their strength is in sensing materials such as plastic, ceramic, and clear targets. Often used with programmable logic controllers (PLCs), they produce PNP or NPN signal output. To determine the signal output of a switch you are replacing, use Testers for Proximity and Photoelectric Switches (not included). All are projecting switches, and must be mounted with the area around the sensor face free of metal. They’re rated IP68 for protection from washdowns and temporary submersion.
Also available: If you don’t see the switch you need, please select 6693T999 and specify manufacturer and manufacturer part number.
For technical drawings and 3-D models, click on a part number.
Switch Starting Position | Max. Sensing Distance, mm | Signal Output Type | Input Voltage | Current Output | No. of Wire Leads | Lg., mm | Wd., mm | Ht., mm | Circuit Protection | Cable Lead Lg., ft. | Temperature Range, °F | Environmental Rating | Each | |
Plastic Housing with Plastic Face | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
With Wire Leads | ||||||||||||||
1 Off (Normally Open) and 1 On (Normally Closed) | 10 | PNP | 10V DC-30V DC | 200mA | 4 | 5.5 | 46 | 28 | Overload Reverse Polarity Short Circuit | 6 1/2 | 0° to 175° | IP68 | 000000 | 0000000 |
1 Off (Normally Open) and 1 On (Normally Closed) | 10 | NPN | 10V DC-30V DC | 200mA | 4 | 5.5 | 46 | 28 | Overload Reverse Polarity Short Circuit | 6 1/2 | 0° to 175° | IP68 | 000000 | 000000 |
Harsh Environment DC Universal-Object Proximity Switches
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Micro
M12 Plug
Rated NEMA 6P, 12, IP68 and IP69K, these switches protect against corrosion and high-pressure, high-temperature washdowns. Also known as capacitive proximity switches, they remotely sense both metallic and nonmetallic objects but their strength is in sensing materials such as plastic, ceramic, and clear targets. They’re often used with programmable logic controllers (PLCs) and produce PNP or NPN signal output. To determine the signal output of a switch you are replacing, use Testers for Proximity and Photoelectric Switches (not included). They mount flush with the surface of any material, including metal, and are also known as embeddable or shielded switches. The 4-pole Micro M12 plug connects to cables with sockets (sold separately), allowing you to quickly connect and disconnect the switch.
Also available: If you don’t see the switch you need, please select 6693T999 and specify manufacturer and manufacturer part number.
For technical drawings and 3-D models, click on a part number.
Switch Starting Position | Dia., mm | Max. Sensing Distance, mm | Signal Output Type | Input Voltage | Current Output | Lg., mm | Circuit Protection | Temperature Range, °F | Environmental Rating | Each | |
Plastic Housing with Plastic Face | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
With 4-Pole Micro M12 Plug | |||||||||||
1 Off (Normally Open) and 1 On (Normally Closed) | 30 | 16 | PNP | 10V DC-40V DC | 200mA | 61 | Reverse Polarity Short Circuit | -20° to 185° | NEMA 6P, NEMA 12, IP68, IP69K | 0000000 | 0000000 |
1 Off (Normally Open) and 1 On (Normally Closed) | 30 | 16 | NPN | 10V DC-40V DC | 200mA | 61 | Reverse Polarity Short Circuit | -20° to 185° | NEMA 6P, NEMA 12, IP68, IP69K | 0000000 | 000000 |
Cable with Socket | 0000000 | Each | 000000 |