Environment Environment |
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Component Component |
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Industry Designation Industry Designation |
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Wire Connection Type Wire Connection Type |
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Specifications Met Specifications Met |
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Switch Starting Position Switch Starting Position |
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Switch Type Switch Type |
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Switch Action Switch Action |
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Choosing an Electrical Switch
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Choosing a Proximity Switch
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Frame-Mounted Safety Switches
 Key Shown Actuating from the Side |  A |  B |
 C |  D |
Also known as interlock switches, these ensure the safety of personnel by automatically shutting off power to machinery when an access door opens. Mount the switch to the door frame and mount the key to the door so that the key is inserted into the switch when the door is closed. When the door opens, the key is removed from the switch and the machine shuts down. Keys actuate from both the top and the side of the switch. They’re often used with machine guards. All have positive-force, normally closed contacts that will open a circuit when the switch is actuated even if a spring fails or the contacts stick. They’re NEMA and IP rated for protection from washdowns.
NEMA 6 and IP67 rated switches protect against temporary submersion.
Adjustable-mount keys (sold separately) are compatible with Style D. They pivot 15° to make it easier to align with the switch 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 | No. of Terminals | Industry Designation | Switching Current @ Voltage | Max. Voltage | Ht. | Wd. | Dp. | Wire Connection Type | Environmental Rating | Each | |
With Positive-Force Normally Closed Contacts | ||||||||||||||
| A | 2 | 1 Off (Normally Open) and 1 On (Normally Closed) | Stays Switched (Maintained) | 4 | DPST-1NO/1NC | 5 A @ 120 V AC, 2 A @ 24 V DC | 250V DC 500V AC | 3" | 1" | 1.1" | Screw Terminals | NEMA 6, IP67 | 00000000 | 000000 |
| B | 2 | 1 Off (Normally Open) and 1 On (Normally Closed) | Stays Switched (Maintained) | 2 | DPST-1NO/1NC | 8 A @ 120 V AC, 4 A @ 24 V DC | 24V DC 250V AC | 3.3" | 1.2" | 1.2" | Wire Leads | IP67 | 00000000 | 000000 |
| C | 2 | 1 Off (Normally Open) and 1 On (Normally Closed) | Stays Switched (Maintained) | 4 | DPST-1NO/1NC | 10 A @ 120 V AC, 2 A @ 24 V DC | 24V DC 250V AC | 3.6" | 2.1" | 1.3" | Screw Terminals | NEMA 4, IP65 | 00000000 | 000000 |
| C | 3 | 1 Off (Normally Open) and 2 On (Normally Closed) | Stays Switched (Maintained) | 3 | 3PST-1NO/2NC | 8 A @ 120 V AC, 4 A @ 24 V DC | 250V DC 600V AC | 3.5" | 2.1" | 1.2" | Screw Terminals | IP67 | 00000000 | 000000 |
| D | 3 | 1 Off (Normally Open) and 2 On (Normally Closed) | Stays Switched (Maintained) | 6 | 3PST-1NO/2NC | 6 A @ 120 V AC, 0.27 A @ 24 V DC | 240V AC 250V DC | 3.8" | 1.2" | 1.2" | Screw Terminals | IP67 | 00000000 | 00000 |
With Positive-Force Normally Closed Contacts and Rotating Head | ||||||||||||||
| C | 3 | 1 Off (Normally Open) and 2 On (Normally Closed) | Stays Switched (Maintained) | 6 | 3PST-1NO/2NC | 6 A @ 120 V AC, 2.5 A @ 24 V DC | 250V DC 500V AC | 3.9" | 2.3" | 1.3" | Screw Terminals | NEMA 6, IP67 | 00000000 | 000000 |
| Adjustable-Angle Key for Style D | 000000000 | Each | 000000 |
Hinge-Actuated Safety Switches
Replace access door hinges with these switches; they actuate when the door opens at least 4°. Also known as interlock switches, they ensure the safety of personnel by automatically shutting off power to machinery when an access door opens. All have positive-force, normally-closed contacts that will open a circuit when the switch is actuated even if a spring fails or the contacts stick. In addition to access doors, these switches can also be used on machine guards constructed from aluminum T-slotted framing. They’re rated IP65 for protection from washdowns.
For technical drawings and 3-D models, click on a part number.
Overall | ||||||||||||
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| No. of Circuits Controlled | Switch Starting Position | Switch Action | No. of Terminals | Industry Designation | Switching Current @ Voltage | Wire Connection Type | Conduit Thread Size | Ht. | Wd. | Dp. | Each | |
| 3 | 1 Off (Normally Open) and 2 On (Normally Closed) | Springs Back (Momentary) | 6 | 3PST-1NO/2NC | 2 A @ 250 V AC | Screw Terminals | M20 | 3.62" | 4.39" | 1.42" | 0000000 | 0000000 |
Access-Delay Frame-Mounted Safety Switches
Key Shown Actuating from the Side |  A |  B |
 C |
Delay access to hazardous areas until conditions are safe; use these switches with machines that take time to stop after they are turned off. Mount the switch to the door frame and mount the key to the door so that the key is inserted into the switch when the door is closed. When the door is pulled, the key is held in place with 225 lbs. of force until the switch receives a signal from a time-delay relay, motion sensor, or position sensor (not included) that the machine’s motion has stopped. After the motion has stopped, the key can be removed from the switch, releasing the access door. They’re often used with machine guards. All have positive-force, normally-closed contacts that will open a circuit when the switch is actuated even if a spring fails or the contacts stick. They’re rated for protection from washdowns and temporary submersion.
Style A and B have a key entry on the top and side of the switch.
Style C has a key entry on two opposite sides of the switch.
Emergency override keys (sold separately) bypass the access delay feature.
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 | No. of Terminals | Industry Designation | Switching Current @ Voltage | Max. Voltage | Input Voltage | Holding Force, lbs. | Ht. | Wd. | Dp. | Wire Connection Type | Conduit Trade Size | Each | |
Positive-Force Normally Closed Contacts | ||||||||||||||||
| A | 3 | 1 Off (Normally Open) and 2 On (Normally Closed) | Stays Switched (Maintained) | 6 | 3PST-1NO/2NC | 5 A @ 120 V AC, 2 A @ 24 V DC | 500V AC 250V DC | 24V AC, 24V DC | 225 | 4.7" | 2.3" | 1.4" | Screw Terminals | 1/2 | 0000000 | 0000000 |
| A | 3 | 1 Off (Normally Open) and 2 On (Normally Closed) | Stays Switched (Maintained) | 6 | 3PST-1NO/2NC | 5 A @ 120 V AC, 2 A @ 24 V DC | 500V AC 250V DC | 110V AC | 225 | 4.7" | 2.3" | 1.4" | Screw Terminals | 1/2 | 0000000 | 000000 |
| B | 3 | 1 Off (Normally Open) and 2 On (Normally Closed) | Stays Switched (Maintained) | 14 | 3PST-1NO/2NC | 3 A @ 120 V AC, 2.5 A @ 24 V DC | 250V DC 240V AC | 24V DC | 225 | 3.7" | 3.5" | 1.4" | Screw Terminals | 1/2 | 0000000 | 000000 |
Positive-Force Normally Closed Contacts and Rotating Head | ||||||||||||||||
| C | 4 | 2 Off (Normally Open) and 2 On (Normally Closed) | Stays Switched (Maintained) | 8 | 4PST-2NO/2NC | 4 A @ 120 V AC, 4 A @ 24 V DC | 240V AC 24V DC | 24V AC, 24V DC | 225 | 7.6" | 1.2" | 1.6" | Screw Terminals | 1/2 | 0000000 | 000000 |
| Emergency Override Key for Style A | 0000000 | Each | 000000 |
Light Beam Safety Barrier Switches
Immediately cut power to machinery by breaking the light beam between the two barriers. Light beams can travel up to 32 feet between the transmitter and receiver. For a complete system, combine a transmitter, receiver, safety relay, and connectors (sold separately). Switches will automatically produce PNP or NPN signal output based on the device they are connected to. 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.
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.
Use safety relays when connecting these barrier switches to emergency stop switches.
Transmitter and receiver connecting cords allow you to connect multiple safety barrier switches in a row. They include one cord to connect two transmitters, and one cord to connect two receivers.
Optional adjustable brackets allow the transmitter and receiver to swivel from side-to-side, making it easier to align them during installation.
IP67 rated components are protected from washdowns and temporary submersion.
For technical drawings and 3-D models, click on a part number.
Plug Type | |||||||||||||||
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| 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 | Cable Lg., ft. | Each | |
| 6.3" | On When Object Absent | 1-32 | 24V DC | 115mA | PNP/NPN | 5-pole Micro M12 | 8-pole Micro M12 | 8.2" | 1.4" | 1.4" | Powder-Coated Aluminum | Yellow | 1 | 0000000 | 000000000 |
| 9.4" | On When Object Absent | 1-32 | 24V DC | 120mA | PNP/NPN | 5-pole Micro M12 | 8-pole Micro M12 | 11.3" | 1.4" | 1.4" | Powder-Coated Aluminum | Yellow | 1 | 0000000 | 00000000 |
| 12.6" | On When Object Absent | 1-32 | 24V DC | 130mA | PNP/NPN | 5-pole Micro M12 | 8-pole Micro M12 | 14.5" | 1.4" | 1.4" | Powder-Coated Aluminum | Yellow | 1 | 0000000 | 00000000 |
| 15.7" | On When Object Absent | 1-32 | 24V DC | 140mA | PNP/NPN | 5-pole Micro M12 | 8-pole Micro M12 | 17.6" | 1.4" | 1.4" | Powder-Coated Aluminum | Yellow | 1 | 0000000 | 00000000 |
| 18.9" | On When Object Absent | 1-32 | 24V DC | 130mA | PNP/NPN | 5-pole Micro M12 | 8-pole Micro M12 | 20.8" | 1.4" | 1.4" | Powder-Coated Aluminum | Yellow | 1 | 0000000 | 00000000 |
| 22" | On When Object Absent | 1-32 | 24V DC | 135mA | PNP/NPN | 5-pole Micro M12 | 8-pole Micro M12 | 23.9" | 1.4" | 1.4" | Powder-Coated Aluminum | Yellow | 1 | 0000000 | 00000000 |
| 28.3" | On When Object Absent | 1-32 | 24V DC | 150mA | PNP/NPN | 5-pole Micro M12 | 8-pole Micro M12 | 30.2" | 1.4" | 1.4" | Powder-Coated Aluminum | Yellow | 1 | 0000000 | 00000000 |
| 34.6" | On When Object Absent | 1-32 | 24V DC | 160mA | PNP/NPN | 5-pole Micro M12 | 8-pole Micro M12 | 36.5" | 1.4" | 1.4" | Powder-Coated Aluminum | Yellow | 1 | 0000000 | 00000000 |
| 47.2" | On When Object Absent | 1-32 | 24V DC | 190mA | PNP/NPN | 5-pole Micro M12 | 8-pole Micro M12 | 49.1" | 1.4" | 1.4" | Powder-Coated Aluminum | Yellow | 1 | 0000000 | 00000000 |
| Replacement Brackets | 0000000 | Each | 000000 |
| Input Voltage | No. of Circuits Controlled | Switching Current @ Voltage | Industry Designation | Wire Connection Type | Ht. | Wd. | Dp. | Features | For DIN Rail Ht., mm | Each | |
| 24V DC | 2 | 2 A @ 240 V AC, 1.5 A @ 24 V DC | DPST-NO | Terminal Block | 4.9" | 0.69" | 4.3" | Auxiliary PNP Output | 35 | 0000000 | 0000000 |
| 24V DC | 4 | 2 A @ 240 V AC, 1.5 A @ 24 V DC | 4PST-NO | Terminal Block | 4.9" | 0.89" | 4.3" | Auxiliary PNP Output | 35 | 0000000 | 000000 |
| Wire Connection Type | No. of Wire Leads | Cable Lg., ft. | Each | |
| Wire Leads | 5 | 32.5 | 0000000 | 000000 |
| Wire Connection Type | No. of Wire Leads | Cable Lg., ft. | Each | |
| Wire Leads | 8 | 32.5 | 0000000 | 0000000 |
| No. of Cords | Cable Lg. | Each | |
| 2 | 8" | 0000000 | 0000000 |
| No. of Brackets | Each | |
| 2 | 0000000 | 000000 |
Long Distance Light Beam Safety Barrier Switches
Transmit a beam of light up to 225 ft. from the transmitter to the receiver. They immediately cut power to machinery by breaking the light beam between the transmitter and receiver. A complete system requires a transmitter, receiver, transmitter connector, and receiver connector (sold separately). All are rated IP67 for protection from washdowns and temporary submersion. Note: Use only with machinery that can consistently and immediately stop anywhere in its cycle; do not use with a full-revolution clutched press or machine.
The transmitter and receiver have LED indicators that provide status and diagnostic information.
For technical drawings and 3-D models, click on a part number.
Plug Type | |||||||||||||
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| Light Beam Frequency | Light Beam Switch Operation | Sensing Distance, ft. | Input Voltage | Transmitter | Receiver | Ht. | Wd. | Dp. | Housing Material | No. of Brackets | Specifications Met | Each | |
| Infrared | On When Object Absent | 3-225 | 24V DC | 5-pole Micro M12 | 8-pole Micro M12 | 9.1" | 2.1" | 2.9" | Powder-Coated Aluminum | 4 | UL Listed, C-UL Listed, CE Marked, ANSI Machine Guard Requirements | 0000000 | 000000000 |
| Wire Connection Type | No. of Wire Leads | Cable Lg., ft. | Each | |
| Wire Leads | 3 | 32 | 0000000 | 0000000 |
| Wire Connection Type | No. of Wire Leads | Cable Lg., ft. | Each | |
| Wire Leads | 8 | 32 | 0000000 | 0000000 |