Choosing a Proximity Switch
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Rotatable DC Metallic-Object Proximity Switches




Micro
M12 Plug


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.
Switches | Cables with Socket | Receptacles | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 (IP68 and IP69)—200mA Current Output | |||||||||||||||
Flush with 4-Pole Micro M12 Plug | |||||||||||||||
| 1 Off (Normally Open) | 5 | 30 | PNP | 10V DC-30V DC | 67 | 40 | 40 | Reverse Polarity Short Circuit | -10° to 155° | 00000000 | 0000000 | 0000000 | 000000 | 000000 | 00 |
| 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) | 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 | 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 | 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) | 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 | 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) | 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 | 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 |
Harsh Environment Light Beam Safety Barrier Switches
Shut off machinery on your roughest, dirtiest job sites the second someone or something gets too close. Shielded by a polycarbonate housing, these safety barrier switches withstand impact better than standard models. Rated IP69, they’re sealed to keep out dust and high-pressure, high-temperature washdowns, so they'll stand up to mud, water, and heat on site. They're often used in construction zones and mining operations. When conditions are too harsh for inspections, use Bluetooth to send diagnostics to your phone. Simply connect to the app to monitor switching status, beam alignment, and other data from afar.
These switches trigger when the light beams between the transmitter and receiver are interrupted. To selectively allow material to pass through the sensing field, you can program the system to allow one or more beams to be broken without shutting off your machine. To create a perimeter guard that bends around corners, add mirrors to reflect light beams at an angle.
For a complete switching system, combine a transmitter and receiver, which are sold together, with a safety relay (sold separately).
Note: These switches cannot be used with a full-revolution clutch press or machine. Use only with machinery that can consistently and immediately stop anywhere in its cycle.
Finger-safe switches trigger from objects the size of a finger passing through. Hand-safe switches trigger from objects the size of a hand passing through.
Safety relays send a signal to shut off your machinery when the light beams are breached and restart when the issue is resolved. IP20 rated, they have recessed terminals that prevent fingers and other objects from touching live circuits. Mount them to 35 mm DIN rail (also known as DIN 3 Rail) for fast installation. These relays meet ISO and IEC standards for machine safety and can help achieve PL, SIL, or CAT system ratings.



Micro
M12 Plug
Micro
M12 Plug
Plug Type | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Light Beam Ht. | Light Beam Switch Operation | Sensing Distance, ft. | Input Voltage | Current Output | Signal Output Type | Transmitter | Receiver | Ht. | Wd. | Dp. | Housing Material | Color | Includes | Cable Lg., ft. | Each | |
Finger Safe (0.55" Minimum Object Size Detected) | ||||||||||||||||
| 13" | On When Object Absent | 1-23 | 24V DC | 700mA | PNP | 4-pole Micro M12 | 5-pole Micro M12 | 18.1" | 2.4" | 2.4" | Polycarbonate Plastic | Yellow | Four Fixed Mounting Brackets | 33 | 0000000 | 000000000 |
| 19.3" | On When Object Absent | 1-23 | 24V DC | 700mA | PNP | 4-pole Micro M12 | 5-pole Micro M12 | 24.4" | 2.4" | 2.4" | Polycarbonate Plastic | Yellow | Four Fixed Mounting Brackets | 33 | 0000000 | 00000000 |
| 25.6" | On When Object Absent | 1-23 | 24V DC | 700mA | PNP | 4-pole Micro M12 | 5-pole Micro M12 | 30.7" | 2.4" | 2.4" | Polycarbonate Plastic | Yellow | Four Fixed Mounting Brackets | 33 | 0000000 | 00000000 |
| 28.7" | On When Object Absent | 1-23 | 24V DC | 700mA | PNP | 4-pole Micro M12 | 5-pole Micro M12 | 33.9" | 2.4" | 2.4" | Polycarbonate Plastic | Yellow | Four Fixed Mounting Brackets | 33 | 0000000 | 00000000 |
| 35" | On When Object Absent | 1-23 | 24V DC | 700mA | PNP | 4-pole Micro M12 | 5-pole Micro M12 | 40.2" | 2.4" | 2.4" | Polycarbonate Plastic | Yellow | Four Fixed Mounting Brackets | 33 | 0000000 | 00000000 |
| 38.2" | On When Object Absent | 1-23 | 24V DC | 700mA | PNP | 4-pole Micro M12 | 5-pole Micro M12 | 43.3" | 2.4" | 2.4" | Polycarbonate Plastic | Yellow | Four Fixed Mounting Brackets | 33 | 0000000 | 00000000 |
| 47.6" | On When Object Absent | 1-23 | 24V DC | 700mA | PNP | 4-pole Micro M12 | 5-pole Micro M12 | 52.8" | 2.4" | 2.4" | Polycarbonate Plastic | Yellow | Four Fixed Mounting Brackets | 33 | 0000000 | 00000000 |
| 53.9" | On When Object Absent | 1-23 | 24V DC | 700mA | PNP | 4-pole Micro M12 | 5-pole Micro M12 | 59.1" | 2.4" | 2.4" | Polycarbonate Plastic | Yellow | Four Fixed Mounting Brackets | 33 | 0000000 | 00000000 |
Hand Safe (1.18" Minimum Object Size Detected) | ||||||||||||||||
| 13" | On When Object Absent | 1-32 | 24V DC | 700mA | PNP | 4-pole Micro M12 | 5-pole Micro M12 | 18.1" | 2.4" | 2.4" | Polycarbonate Plastic | Yellow | Four Fixed Mounting Brackets | 33 | 0000000 | 00000000 |
| 19.3" | On When Object Absent | 1-32 | 24V DC | 700mA | PNP | 4-pole Micro M12 | 5-pole Micro M12 | 24.4" | 2.4" | 2.4" | Polycarbonate Plastic | Yellow | Four Fixed Mounting Brackets | 33 | 0000000 | 00000000 |
| 25.6" | On When Object Absent | 1-32 | 24V DC | 700mA | PNP | 4-pole Micro M12 | 5-pole Micro M12 | 30.7" | 2.4" | 2.4" | Polycarbonate Plastic | Yellow | Four Fixed Mounting Brackets | 33 | 0000000 | 00000000 |
| 28.7" | On When Object Absent | 1-32 | 24V DC | 700mA | PNP | 4-pole Micro M12 | 5-pole Micro M12 | 33.9" | 2.4" | 2.4" | Polycarbonate Plastic | Yellow | Four Fixed Mounting Brackets | 33 | 0000000 | 00000000 |
| 35" | On When Object Absent | 1-32 | 24V DC | 700mA | PNP | 4-pole Micro M12 | 5-pole Micro M12 | 40.2" | 2.4" | 2.4" | Polycarbonate Plastic | Yellow | Four Fixed Mounting Brackets | 33 | 0000000 | 00000000 |
| 38.2" | On When Object Absent | 1-32 | 24V DC | 700mA | PNP | 4-pole Micro M12 | 5-pole Micro M12 | 43.3" | 2.4" | 2.4" | Polycarbonate Plastic | Yellow | Four Fixed Mounting Brackets | 33 | 0000000 | 00000000 |
| 47.6" | On When Object Absent | 1-32 | 24V DC | 700mA | PNP | 4-pole Micro M12 | 5-pole Micro M12 | 52.8" | 2.4" | 2.4" | Polycarbonate Plastic | Yellow | Four Fixed Mounting Brackets | 33 | 0000000 | 00000000 |
| 53.9" | On When Object Absent | 1-32 | 24V DC | 700mA | PNP | 4-pole Micro M12 | 5-pole Micro M12 | 59.1" | 2.4" | 2.4" | Polycarbonate Plastic | Yellow | Four Fixed Mounting Brackets | 33 | 0000000 | 00000000 |

| Number of Terminals | Input Voltage | Switching Current @ Voltage | Maximum Switching Voltage | Wire Connection Type | Ht. | Wd. | Dp. | For Use With | Maximum System Safety Rating | Features | Each | |
2 Circuits Controlled with 2 Off (Normally Open) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 14 | 24V DC | 2 A @ 240 V AC, 1.5 A @ 24 V DC | 250V AC | Terminal Block | 4.9" | 0.69" | 4.3" | Emergency Stops, Light Curtains | PLe, SIL3, CAT 4, 250V | Auxiliary PNP Output, LED Indicator | 0000000 | 0000000 |
4 Circuits Controlled with 4 Off (Normally Open) | ||||||||||||
| 18 | 24V DC | 2 A @ 240 V AC, 1.5 A @ 24 V DC | 250V AC | Terminal Block | 4.9" | 0.89" | 4.3" | Emergency Stops, Light Curtains | PLe, SIL3, CAT 4, 250V | Auxiliary PNP Output, LED Indicator | 0000000 | 000000 |

























