Choosing a Proximity Switch
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Choosing an Electrical Switch
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Snap-Acting Switches
Open and close circuits quickly to minimize arcing and prevent contacts from sticking. These switches are often used as door-open indicators on appliances and enclosures or as an internal component in limit, pressure, and temperature switches.
Plastic covers (sold separately) are compatible with switches with screw terminals. They fit over the bottom of the switch to prevent contact with live terminals.
For technical drawings and 3-D models, click on a part number.
Housing | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Circuits Controlled | Switch Starting Position | Switch Action | Industry Designation | Switching Current @ Voltage | Max. Voltage  | Horsepower @ Switching Voltage | Operating Temp. Range, °F | Actuator Ht. | No. of Terminals | Lg. | Ht. | Dp. | Lever Lg. | Environmental Rating | Each | ||
Plunger Actuator Style | |||||||||||||||||
With Screw Terminals | |||||||||||||||||
| A | 2 | 2 Off (Normally Open) or 2 On (Normally Closed) | Springs Back (Momentary) | DPDT | 10 A @ 250 V AC, 10 A @ 8 V DC | 480V AC 250V DC | 1/4 hp @ 250 V AC | -13° to 176° | 0.04" | 6 | 1.94" | 0.95" | 0.69" | __ | __ | 000000 | 000000 |
With Solder Lugs | |||||||||||||||||
| A | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 15 A @ 250 V AC, 15 A @ 8 V DC | 500V AC 250V DC | __ | -13° to 176° | 0.05" | 3 | 1.94" | 0.95" | 0.69" | __ | NEMA 1 | 0000000 | 00000 |
Plunger Actuator Style for 1/2" Panel Cutout Dia. | |||||||||||||||||
With Solder Lugs | |||||||||||||||||
| C | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 15 A @ 250 V AC, 15 A @ 8 V DC | 500V AC 250V DC | __ | -13° to 176° | 0.9" | 3 | 1.94" | 0.95" | 0.69" | __ | NEMA 1 | 0000000 | 00000 |
Roller Plunger Actuator Style for 1/2" Panel Cutout Dia. | |||||||||||||||||
With Solder Lugs | |||||||||||||||||
| D | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 15 A @ 250 V AC, 15 A @ 8 V DC | 500V AC 250V DC | __ | -13° to 176° | 1.3" | 3 | 1.94" | 0.95" | 0.69" | __ | NEMA 1 | 0000000 | 00000 |
Cross Roller Plunger Actuator Style for 1/2" Panel Cutout Dia. | |||||||||||||||||
With Solder Lugs | |||||||||||||||||
| E | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 15 A @ 250 V AC, 15 A @ 8 V DC | 500V AC 250V DC | __ | -13° to 176° | 1.3" | 3 | 1.94" | 0.95" | 0.69" | __ | NEMA 1 | 0000000 | 00000 |
Lever Actuator Style | |||||||||||||||||
With Screw Terminals | |||||||||||||||||
| F | 2 | 2 Off (Normally Open) or 2 On (Normally Closed) | Springs Back (Momentary) | DPDT | 10 A @ 250 V AC, 10 A @ 8 V DC | 480V AC 250V DC | 1/4 hp @ 250 V AC | -13° to 176° | 0.29" | 6 | 1.94" | 0.95" | 0.69" | 2 1/2" | __ | 000000 | 00000 |
With Solder Lugs | |||||||||||||||||
| F | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 15 A @ 250 V AC, 15 A @ 8 V DC | 500V AC 250V DC | __ | -13° to 176° | 0.2" | 3 | 1.94" | 0.95" | 0.69" | 2 1/2" | NEMA 1 | 0000000 | 00000 |
Roller Lever Actuator Style | |||||||||||||||||
With Screw Terminals | |||||||||||||||||
| G | 2 | 2 Off (Normally Open) or 2 On (Normally Closed) | Springs Back (Momentary) | DPDT | 10 A @ 250 V AC, 10 A @ 8 V DC | 480V AC 250V DC | 1/4 hp @ 250 V AC | -13° to 176° | 0.58" | 6 | 1.94" | 0.95" | 0.69" | 1.2" | __ | 000000 | 00000 |
| H | 2 | 2 Off (Normally Open) or 2 On (Normally Closed) | Springs Back (Momentary) | DPDT | 10 A @ 250 V AC, 10 A @ 8 V DC | 480V AC 250V DC | 1/4 hp @ 250 V AC | -13° to 176° | 0.68" | 6 | 1.94" | 0.95" | 0.69" | 1.9" | __ | 000000 | 00000 |
With Solder Lugs | |||||||||||||||||
| G | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 15 A @ 250 V AC, 15 A @ 8 V DC | 500V AC 250V DC | __ | -13° to 176° | 0.6" | 3 | 1.94" | 0.95" | 0.69" | 1" | NEMA 1 | 0000000 | 00000 |
| H | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 15 A @ 250 V AC, 15 A @ 8 V DC | 500V AC 250V DC | __ | -13° to 176° | 0.6" | 3 | 1.94" | 0.95" | 0.69" | 1.9" | NEMA 1 | 0000000 | 00000 |
| Plastic Cover for Switches with Screw Terminals | 0000000 | Each | 00000 |
Hazardous Location Photoelectric Switches
Safely detect the presence or absence of an object moving at high speeds with a light beam. These switches produce a low-current, low-voltage NAMUR signal, so they won’t create sparks or ignite in hazardous locations. ATEX and IECEx certified, they meet international standards to protect against explosion in environments containing flammable gases and combustible dust. Switches must be connected to the required barriers (sold separately), which reduce the current and voltage flowing from your power source. Unlike the switches, the barriers must be installed in a separate nonhazardous area.
These switches can send a signal to programmable logic controllers (PLCs) to support automated processes within your system. They are CE marked to meet European health, safety, and environmental protection requirements. Rated IP67, they’re protected against dust, washdowns, and temporary submersion.
Direct-sensing switches detect objects when light reflects back from the object. They have a shorter sensing distance than reflector sensors but don’t require a separate reflector.
Reflector switches detect an object when it passes between the switch and the reflector (not included), interrupting the beam. They have a longer sensing distance than direct-sensing switches.
For technical drawings and 3-D models, click on a part number.
Switching | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Light Beam Switch Operation | Max. Sensing Distance | Switch Starting Position | Input Voltage | Voltage | Current | Frequency | Signal Output Type | Lg., mm | Wd., mm | Ht., mm | Housing Material | Temp. Range, °F | Environmental Rating | Each | |
With Screw Terminals | |||||||||||||||
Direct Sensing Switches with Infrared Light Beam | |||||||||||||||
| On When Object Absent, On When Object Present | 300 mm | 1 Off (Normally Open) or 1 On (Normally Closed) | 6V DC-20V DC | 8V DC | 10mA | 100 Hz | NAMUR | 100 | 30 | 30 | Plastic | -10° to 155° | IEC Zone 1 Groups IIC, IIB, IIA IEC Zone 20 Groups IIIC, IIIB, IIIA IP67 | 0000000 | 0000000 |
Reflector Switches with Visible Light Beam | |||||||||||||||
| On When Object Absent, On When Object Present | 2 m | 1 Off (Normally Open) or 1 On (Normally Closed) | 6V DC-20V DC | 8V DC | 10mA | 100 Hz | NAMUR | 102 | 30 | 30 | Plastic | -10° to 155° | IEC Zone 1 Groups IIC, IIB, IIA IEC Zone 20 Groups IIIC, IIIB, IIIA IP67 | 0000000 | 000000 |
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 |