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    53 Products

    Limit Switches

    Image of Attribute. Style A. Front orientation. Contains Annotated. Limit Switches. Limit Switches, Plunger Actuator, Style A.
    Image of Attribute. Style B. Front orientation. Contains Annotated. Limit Switches. Limit Switches, Roller Plunger Actuator, Style B.
    Image of Attribute. Style D. Front orientation. Contains Annotated. Limit Switches. Limit Switches, Roller Lever Actuator, Style D.

    Style A

    Style B

    Style D

    Image of Attribute. Style E. Front orientation. Contains Annotated. Limit Switches. Limit Switches, Roller Lever Actuator, Style E.
    Image of Attribute. Style F. Front orientation. Contains Annotated. Limit Switches. Limit Switches, Rod Actuator, Style F.
    Image of Attribute. Style H. Front orientation. Contains Annotated. Limit Switches. Limit Switches, Wobble Stick Actuator, Style H.

    Style E

    Style F

    Style H

    When a moving object contacts the actuator on these switches, they open or close a circuit. They have the rapid-closing action of a snap-acting switch, but with a larger actuator. This makes them a good choice for use with large objects—for instance, a box on a conveyor runs into the switch, stopping the conveyor.
    Plunger Actuator—Switches with a plunger actuator require a push to actuate, similar to a button.
    Roller Plunger Actuator—Switches with a roller plunger actuator have a roller that moves when an object pushes the actuator. This reduces friction during actuation to limit wear and tear on your switch.
    Roller Lever Actuator—Switches with a roller lever actuator use a lever with a roller at the end to activate. This allows parts to glide across the actuation surface with minimal friction, limiting wear and tear on your switch.
    Rod Actuator—Switches with a rod actuator use a rod extending out of the body to actuate, so they’ll activate even if an object is far away.
    Wobble Stick Actuator—Switches with a wobble stick actuator have an arm that rotates 360°, so you don’t need to align it in a specific direction. Since the actuator is flexible, it won’t snap if pushed backward. That makes these switches a great choice for systems that get jammed often.
    Styles E and F—Styles E and F let you adjust the actuator’s height to align it with your target.
    NEMA 13 Enclosure Rating—Switches rated NEMA 13 are protected against dirt and oil/coolant spraying.
    IP67 Enclosure Rating—Switches rated IP67 are protected against dust and temporary submersion.
    Housing
    Style
    No. of Circuits
    Controlled
    Switch Starting
    Position
    Switch
    Action
    Switch
    Designation
    Switching Current @ Voltage
    Max. Voltage
    Actuation Torque,
    in·ozf
    Operating
    Temp. Range, ° F
    Actuator Ht.
    No. of
    Terminals
    Lg.
    Ht.
    Dp.
    Housing
    Material
    Conduit
    Trade Size
    Enclosure Rating
    Each
    Plunger Actuator
     
    Screw-Terminal Wire Connection
    A11 Off or 1 On
    Momentary
    SPDT
    10 amp @ 240V AC, 10 amp @ 24V DC600V AC
    250V DC
    10 to 2000.8"41.9"4.5"1.8"Zinc1/2
    NEMA 6P, NEMA 13, IP66, IP67
    000000000000000
    A11 Off or 1 On
    Momentary
    SPDT
    10 amp @ 300V AC, 6 amp @ 24V DC300V AC
    250V DC
    14 to 1761.1"41.6"2.7"1.6"Aluminum1/2
    IP67
    000000000000
    A22 Off or 2 On
    Momentary
    DPDT
    5 amp @ 240V AC, 10 amp @ 24V DC600V AC
    250V DC
    10 to 2000.8"81.9"4.5"1.8"Zinc1/2
    NEMA 6P, NEMA 13, IP66, IP67
    00000000000000
     
    Roller Plunger Actuator
     
    Screw-Terminal Wire Connection
    B11 Off or 1 On
    Momentary
    SPDT
    10 amp @ 300V AC, 6 amp @ 24V DC300V AC
    250V DC
    14 to 1761.6"41.6"2.7"1.6"Aluminum1/2
    IP67
    0000000000000
     
    Roller Lever Actuator
     
    Screw-Terminal Wire Connection
    D11 Off or 1 On
    Momentary
    SPDT
    10 amp @ 240V AC, 10 amp @ 24V DC600V AC
    250V DC
    10 to 2501.2"41.9"4.5"1.8"Zinc1/2
    NEMA 6P, NEMA 13, IP66, IP67
    00000000000000
    D11 Off or 1 On
    Momentary
    SPDT
    10 amp @ 300V AC, 6 amp @ 24V DC300V AC
    250V DC
    4814 to 1762.2"41.6"2.7"1.6"Aluminum1/2
    IP67
    0000000000000
    D22 Off or 2 On
    Momentary
    DPDT
    5 amp @ 240V AC, 10 amp @ 24V DC600V AC
    250V DC
    10 to 2501.2"81.9"4.5"1.8"Zinc1/2
    NEMA 6P, NEMA 13, IP66, IP67
    00000000000000
    E11 Off or 1 On
    Momentary
    SPDT
    10 amp @ 240V AC, 10 amp @ 24V DC600V AC
    250V DC
    10 to 2501.2" to 3.3"41.9"4.5"1.8"Zinc1/2
    NEMA 6P, NEMA 13, IP66, IP67
    00000000000000
    E11 Off or 1 On
    Momentary
    SPDT
    10 amp @ 300V AC, 6 amp @ 24V DC300V AC
    250V DC
    4814 to 1761.7" to 4.2"41.6"2.7"1.6"Aluminum1/2
    IP67
    0000000000000
    E22 Off or 2 On
    Momentary
    DPDT
    5 amp @ 240V AC, 10 amp @ 24V DC600V AC
    250V DC
    10 to 2501.2" to 3.3"81.9"4.5"1.8"Zinc1/2
    NEMA 6P, NEMA 13, IP66, IP67
    00000000000000
     
    Rod Actuator
     
    Screw-Terminal Wire Connection
    F11 Off or 1 On
    Momentary
    SPDT
    10 amp @ 240V AC, 10 amp @ 24V DC600V AC
    250V DC
    10 to 2500.5" to 4.3"41.9"4.5"1.8"Zinc1/2
    NEMA 6P, NEMA 13, IP66, IP67
    00000000000000
    F11 Off or 1 On
    Momentary
    SPDT
    10 amp @ 300V AC, 6 amp @ 24V DC300V AC
    250V DC
    50.614 to 1761.4" to 5.9"41.6"2.7"1.6"Aluminum1/2
    IP67
    0000000000000
    F22 Off or 2 On
    Momentary
    DPDT
    5 amp @ 240V AC, 10 amp @ 24V DC600V AC
    250V DC
    10 to 2500.5" to 11.8"81.9"4.5"1.8"Zinc1/2
    NEMA 6P, NEMA 13, IP66, IP67
    00000000000000
     
    Wobble Stick Actuator
     
    Screw-Terminal Wire Connection
    H11 Off or 1 On
    Momentary
    SPDT
    10 amp @ 240V AC, 10 amp @ 24V DC600V AC
    250V DC
    10 to 2004.5"41.9"4.5"1.8"Zinc1/2
    NEMA 6P, NEMA 13, IP66, IP67
    00000000000000
    H11 Off or 1 On
    Momentary
    SPDT
    10 amp @ 300V AC, 6 amp @ 24V DC300V AC
    250V DC
    14 to 1765.3"41.6"2.7"1.6"Aluminum1/2
    IP67
    0000000000000
    H22 Off or 2 On
    Momentary
    DPDT
    5 amp @ 240V AC, 10 amp @ 24V DC600V AC
    250V DC
    10 to 2004.5"81.9"4.5"1.8"Zinc1/2
    NEMA 6P, NEMA 13, IP66, IP67
    00000000000000
     

    Safety Limit Switches

    Image of Attribute. Style C. Front orientation. Contains Annotated. Limit Switches. Safety Limit Switches, Roller Lever Actuator, Style C.
    Image of Attribute. Style F. Front orientation. Contains Annotated. Limit Switches. Safety Limit Switches, Rod Actuator, Style F.

    Style C

    Style F

    Protect machinery and ensure the safety of personnel—these switches have positive-force contacts that will open the circuit when actuated even if a spring fails or the contacts stick. When an object in motion comes into contact with the actuator, it sends a signal to open or close a circuit. These switches have the rapid-closing action of a snap-acting switch, but with a larger actuator. This makes them a good choice for use with large objects—for instance, a box on a conveyor runs into the switch, stopping the conveyor.
    Roller Lever Actuator—Switches with a roller lever actuator use a lever with a roller at the end to activate. This allows parts to glide across the actuation surface with minimal friction, limiting wear and tear on your switch.
    Rod Actuator—Switches with a rod actuator use a rod extending out of the body to actuate, so they’ll activate even if an object is far away.
    Style F—Styles D, E, and F have an actuator that allows you to adjust its height, making it easier to align switch with the target during installation.
    Plastic Actuator—Switches with a plastic actuator limit wear and tear on passing objects better than switches with a steel actuator.
    Steel Actuator—Switches with a steel actuator are more durable than switches with a plastic actuator. They also handle higher loads.
    Housing
    Style
    No. of Circuits
    Controlled
    Switch Starting
    Position
    Switch
    Action
    Switch
    Designation
    Actuator
    Material
    Switching Current @ Voltage
    Max. Voltage
    Actuation Torque,
    in·ozf
    Operating Temp.
    Range, ° F
    Actuator
    Ht.
    No. of
    Terminals
    Lg.
    Ht.
    Dp.
    Housing
    Material
    Conduit Thread
    Size
    Enclosure Rating
    Each
    Roller Lever Actuator
     
    Screw-Terminal Wire Connection
    C11 Off or 1 On
    Momentary
    SPDT
    Plastic3 amp @ 240V AC, 1.5 amp @ 24V DC240V AC
    24V DC
    -22 to 1651.5"41.7"2.9"1.6"PlasticM20
    NEMA 4X, IP66, IP67
    000000000000000
     
    Rod Actuator
     
    Screw-Terminal Wire Connection
    F11 Off or 1 On
    Momentary
    SPDT
    Steel3 amp @ 240V AC, 1.5 amp @ 24V DC240V AC
    24V DC
    24.8-22 to 1650.5" to 8"41.7"2.9"1.6"PlasticM20
    NEMA 4X, IP66, IP67
    00000000000000
     

    Compact Safety Limit Switches

    Image of Attribute. Style A. Front orientation. Contains Annotated. Limit Switches. Compact Safety Limit Switches, Plunger Actuator, Style A.
    Image of Attribute. Style B. Front orientation. Contains Annotated. Limit Switches. Compact Safety Limit Switches, Roller Plunger Actuator, Style B.
    Image of Attribute. Style C. Front orientation. Contains Annotated. Limit Switches. Compact Safety Limit Switches, Roller Lever Actuator, Style C.

    Style A

    Style B

    Style C

    Shorter and thinner than other safety limit switches, these are sized to fit tight spaces. They protect machinery and ensure the safety of personnel. Positive-force contacts open the circuit when actuated, even if a spring fails or the contacts stick. They 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. All are NEMA and IP rated for protection from washdowns.
    Plunger Actuator—Switches with a plunger actuator require a push to actuate, similar to a button.
    Roller Plunger Actuator—Switches with a roller plunger actuator have a roller that moves parallel to the mounting direction when an object pushes the actuator. This reduces friction during actuation to limit wear and tear on your switch.
    Roller Lever Actuator—Switches with a roller lever actuator use a lever with a roller at the end to activate. This allows parts to glide across the actuation surface with minimal friction, limiting wear and tear.
    Housing
    Style
    No. of Circuits
    Controlled
    Switch Starting
    Position
    Switch
    Action
    Switch
    Designation
    Switching Current @ Voltage
    Max. Voltage
    Operating Temp.
    Range, ° F
    Actuator
    Ht.
    No. of
    Terminals
    Lg.
    Ht.
    Dp.
    Housing
    Material
    Conduit Thread
    Size
    Enclosure
    Rating
    Each
    Plunger Actuator
     
    Screw-Terminal Wire Connection
    A11 Off or 1 On
    Momentary
    SPDT
    10 amp @ 240V AC, 4 amp @ 24V DC240V AC
    24V DC
    -22 to 1760.5"41.2"2.4"1.2"PlasticM20
    NEMA 4, IP65
    000000000000000
     
    Roller Plunger Actuator
     
    Screw-Terminal Wire Connection
    B11 Off or 1 On
    Momentary
    SPDT
    10 amp @ 240V AC, 4 amp @ 24V DC240V AC
    24V DC
    -22 to 1761.2"41.2"2.4"1.2"PlasticM20
    NEMA 4, IP65
    00000000000000
     
    Roller Lever Actuator
     
    Screw-Terminal Wire Connection
    C11 Off or 1 On
    Momentary
    SPDT
    10 amp @ 240V AC, 4 amp @ 24V DC240V AC
    24V DC
    -22 to 1761.1"41.2"2.4"1.2"PlasticM20
    NEMA 4, IP65
    00000000000000
     

    Build-Your-Own Limit Switches

    Combine an actuator and a switch to assemble the exact limit switch you need. These switches have the rapid-closing action of a snap-acting switch, but have a larger actuator for large objects. When an object in motion comes into contact with the actuator, it sends a signal to open or close a circuit. They’re often used for conveyor systems and elevators. Each actuator style is compatible with all housing styles and vice versa.
    Switches
    Image of Product. Front orientation. Limit Switches. Build-Your-Own Limit Switches, Switches, Screw Terminal Connection.
    Image of Product. Front orientation. Limit Switches. Build-Your-Own Limit Switches, Switches, Screw Terminal Connection—LED Power Indicator and LED Status Indicator.
    Image of Product. Front orientation. Limit Switches. Build-Your-Own Limit Switches, Switches, 4-Pole Micro M12 Connection.

    Screw

    Terminal

    Connection

    Screw Terminal

    Connection—LED

    Power

    Indicator and

    LED Status

    Indicator

    4-Pole

    Micro M12

    Connection

    Polypropylene Housing—Switches with a polypropylene housing are lighter in weight than metal switches.
    Zinc Housing—Switches with a zinc alloy housing are more durable than those with a plastic housing.
    LED Power Indicator and LED Status Indicator—Switches with an LED power indicator and LED status indicator show you the status of the line and load phases. They give you extra assurance that your switch is connected and wired correctly.
    4-Pole Micro M12 Connection—Switches with a 4-pole micro M12 plug quickly connect and disconnect from your setup. Use cords (sold separately) to wire your switch connection to your setup.
    2 Conduit Connections—Switches with 2 conduit connections allow you to wire switches side by side, so you can save space and simplify your wiring.
    IP65 Enclosure Rating—IP65 switches protect against dust and splashing water.
    IP66 Enclosure Rating—IP66 switches protect against dust and washdowns.
    IP67 Enclosure Rating—IP67 switches protect against dust and temporary submersion.
    Switches
    Cords
    Housing
    Conduit
    No. of Circuits
    Controlled
    Switch Starting
    Position
    Switch
    Action
    Switch
    Designation
    Switching Current @ Voltage
    Max. Voltage
    No. of
    Terminals
    Lg.
    Ht.
    Dp.
    No. of
    Connections
    Thread
    Size
    Enclosure
    Rating
    Specs.
    Met
    Certification
    Each
    Each
    Polypropylene Housing
     
    Screw Terminal Connection
    21 Off and 1 On
    Momentary
    DPST-1NO/1NC
    6 amp @ 240V AC, 3 amp @ 24V DC400V AC
    400V DC
    41.2"2.7"1.3"1M20
    IP65
    EN 50047UL Listed, C-UL Listed, CE Marked, CCC Marked
    0000000000000———0
    21 Off and 1 On
    Momentary
    DPST-1NO/1NC
    6 amp @ 240V AC, 3 amp @ 24V DC400V AC
    400V DC
    41.6"3.1"1.5"1M20
    IP66, IP67
    EN 50041UL Listed, C-UL Listed, CE Marked, CCC Marked
    000000000000———0
    21 Off and 1 On
    Momentary
    DPST-1NO/1NC
    6 amp @ 240V AC, 3 amp @ 24V DC400V AC
    400V DC
    42"2.1"1.3"2M20
    IP66, IP67
    EN 50047UL Listed, C-UL Listed, CE Marked, CCC Marked
    0000000000000———0
     
    Screw Terminal Connection—LED Power Indicator and LED Status Indicator
    31 Off and 2 On
    Momentary
    3PST-1NO/2NC
    3 amp @ 24V DC24V DC61.2"2.7"1.3"1M20
    IP65
    EN 50047UL Listed, C-UL Listed, CE Marked, CCC Marked
    0000000000000———0
    31 Off and 2 On
    Momentary
    3PST-1NO/2NC
    3 amp @ 24V DC24V DC61.6"3.1"1.5"1M20
    IP66, IP67
    EN 50041UL Listed, C-UL Listed, CE Marked, CCC Marked
    0000000000000———0
     
    4-Pole Micro M12 Connection
    21 Off and 1 On
    Momentary
    DPST-1NO/1NC
    4 amp @ 240V AC, 3 amp @ 24V DC250V AC
    250V DC
    1.2"2.7"1.3"IP65
    EN 50047UL Listed, C-UL Listed, CE Marked, CCC Marked
    00000000000000000000000000
    21 Off and 1 On
    Momentary
    DPST-1NO/1NC
    4 amp @ 240V AC, 3 amp @ 24V DC250V AC
    250V DC
    1.6"3.1"1.5"IP67
    EN 50041UL Listed, C-UL Listed, CE Marked, CCC Marked
    0000000000000000000000000
     
    Zinc Housing
     
    Screw Terminal Connection
    21 Off and 1 On
    Momentary
    DPST-1NO/1NC
    6 amp @ 240V AC, 3 amp @ 24V DC400V AC
    400V DC
    41.2"2.7"1.3"1M20
    IP66, IP67
    EN 50047UL Listed, C-UL Listed, CE Marked, CCC Marked
    0000000000000———0
    21 Off and 1 On
    Momentary
    DPST-1NO/1NC
    6 amp @ 240V AC, 3 amp @ 24V DC400V AC
    400V DC
    41.6"3.1"1.4"1M20
    IP66, IP67
    EN 50041UL Listed, C-UL Listed, CE Marked, CCC Marked
    0000000000000———0
     

    Frame-Mounted Safety Switches

    Image of ProductInUse. Key Shown Actuating from the Side. Front orientation. Safety Switches. Frame-Mounted Safety Switches.

    Key Shown Actuating from the Side

    Image of Product. Front orientation. Safety Switches. Frame-Mounted Safety Switches, Style A.
    Image of Product. Front orientation. Safety Switches. Frame-Mounted Safety Switches, Style B.
    Image of Product. Front orientation. Safety Switches. Frame-Mounted Safety Switches, Style C.
    Image of Product. Front orientation. Safety Switches. Frame-Mounted Safety Switches, Style D.
    Image of Product. Front orientation. Safety Switches. Frame-Mounted Safety Switches, Style E.
    Image of Product. Front orientation. Safety Switches. Frame-Mounted Safety Switches, Style G.

    Style A

    Style

    B

    Style C

    Style D

    Style E

    Style G

    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 a 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. They’re often used with machine guards for large robots.
    Styles A-G—Style A-G switches 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.
    IP67 Enclosure Rating—IP67 rated switches protect against temporary submersion.
    NEMA 4 Enclosure Rating—NEMA 4 rated switches protect against washdowns.
    NEMA 6 Enclosure Rating—NEMA 6 rated switches protect against both temporary submersion and washdowns.
    Key Included—All switches require an actuator key, but not all include one—check whether you need to pick out a separate actuator key. For some switch styles, you can also select the mounting orientation of the key.
    Housing
    Conduit
    Style
    No. of Circuits
    Controlled
    Switch Starting
    Position
    Switch
    Action
    No. of
    Terminals
    Switch
    Designation
    Switching Current @ Voltage
    Max. Voltage
    Ht.
    Wd.
    Dp.
    Trade
    Size
    Thread
    Size
    Thread
    Type
    Key
    Included
    Enclosure
    Rating
    Each
    Wire Lead Connection with Positive-Force Normally Closed Contacts
    A21 Off and 1 On
    Maintained
    2DPST-1NO/1NC
    8 amp @ 120V AC, 4 amp @ 24V DC250V AC
    24V DC
    3.3"1.2"1.2"M16
    Metric
    YesIP67
    000000000000000
     
    Screw-Terminal Wire Connection with Positive-Force Normally Closed Contacts
    B21 Off and 1 On
    Maintained
    4DPST-1NO/1NC
    5 amp @ 120V AC, 2 amp @ 24V DC500V AC
    250V DC
    3"1"1.1"1/2
    NPT
    YesIP67, NEMA 6
    00000000000000
    C21 Off and 1 On
    Maintained
    4DPST-1NO/1NC
    10 amp @ 120V AC, 2 amp @ 24V DC250V AC
    24V DC
    3.6"2.1"1.3"1/2
    NPT
    YesIP65, NEMA 4
    00000000000000
    C31 Off and 2 On
    Maintained
    33PST-1NO/2NC
    8 amp @ 120V AC, 4 amp @ 24V DC600V AC
    250V DC
    3.5"2.1"1.2"1/2
    NPT
    YesIP67
    00000000000000
    C31 Off and 2 On
    Maintained
    63PST-1NO/2NC
    4 amp @ 230V AC, 4 amp @ 24V DC500V AC
    24V DC
    3.5"2"1.2"M16
    Metric
    YesIP67
    00000000000000
    D31 Off and 2 On
    Maintained
    63PST-1NO/2NC
    6 amp @ 120V AC, 0.27 amp @ 24V DC240V AC
    250V DC
    3.8"1.2"1.2"1/2
    NPT
    YesIP67
    0000000000000
    E21 Off and 1 On
    Maintained
    4DPST-1NO/1NC
    8 amp @ 230V AC, 5 amp @ 24V DC400V AC
    24V DC
    4.2"2"1.6"M20
    Metric
    NoIP67
    0000000000000
    E22 On
    Maintained
    4DPST-NC
    8 amp @ 230V AC, 5 amp @ 24V DC400V AC
    24V DC
    4.2"2"1.6"M20
    Metric
    NoIP67
    0000000000000
     
    Screw-Terminal Wire Connection with Positive-Force Normally Closed Contacts and Rotating Head
    C31 Off and 2 On
    Maintained
    63PST-1NO/2NC
    5 amp @ 120V AC, 5 amp @ 24V DC400V AC
    400V DC
    3.5"2"1.3"1/2
    NPT
    YesIP65
    00000000000000
    G31 Off and 2 On
    Maintained
    63PST-1NO/2NC
    10 amp @ 230V AC, 4 amp @ 24V DC250V AC
    24V DC
    4.3"1.6"1.4"M20
    Metric
    NoIP67
    00000000000000
     
    Actuator Keys

    Tilt Switches

    Image of Product. Front orientation. Tilt Switches. Style A.
    Image of Product. Front orientation. Tilt Switches. Style B.

    Style A

    Style B

    Often used as position indicators, pump level controls, and machine limit switches, these switches actuate when tilted to a certain angle. They mount horizontally and activate when tilted downward, and deactivate when tilted up. All combine electromechanical and solid state technologies for reliability and long life.
    Differential Angle—Differential angle is the total angle from the point of activation to the point of deactivation.
    Style
    No. of Circuits
    Controlled
    Switch Starting
    Position
    Switch
    Designation
    Switching Current @ Voltage
    Max. Voltage
    Differential
    Angle
    No. of Wire
    Leads
    Dia.
    Lg.
    Housing
    Material
    Enclosure
    Rating
    Each
    Ring-Terminal Wire Connection
    A11 Off
    SPST-NO
    0.1 amp @ 120V AC, 0.25 amp @ 24V DC60V DC/120V AC15°20.53"1.88"PlasticNEMA 4, IP67
    000000000000
     
    Wire Lead Connection
    B11 Off
    SPST-NO
    20 amp @ 24V DC40V DC10°20.75"2"PlasticNEMA 4, IP67
    00000000000
     

    Access-Delay Frame-Mounted Safety Switches

    Image of ProductInUse. Key Shown Actuating from the Side. Front orientation. Safety Switches. Access-Delay Frame-Mounted Safety Switches.

    Key Shown Actuating from the Side

    Image of Product. Front orientation. Safety Switches. Access-Delay Frame-Mounted Safety Switches, Style A.
    Image of Product. Front orientation. Safety Switches. Access-Delay Frame-Mounted Safety Switches, Style B.

    Style A

    Style B

    Image of Product. Front orientation. Safety Switches. Access-Delay Frame-Mounted Safety Switches, Style C.

    Style 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.
    Styles A and B—Style A and B have a key entry on the top and side of the switch.
    Style C—Style C has a key entry on two opposite sides of the switch.
    Housing
    Conduit
    Style
    No. of Circuits
    Controlled
    Switch Starting
    Position
    Switch
    Action
    No. of
    Terminals
    Switch
    Designation
    Switching Current @ Voltage
    Max. Voltage
    Input Voltage
    Holding
    Force, lbf
    Ht.
    Wd.
    Dp.
    Trade
    Size
    Thread
    Type
    Enclosure
    Rating
    Each
    Screw-Terminal Wire Connection with Positive-Force Normally Closed Contacts
    A31 Off and 2 On
    Maintained
    63PST-1NO/2NC
    5 amp @ 120V AC, 2 amp @ 24V DC500V AC
    250V DC
    24V AC, 24V DC2254.7"2.3"1.4"1/2
    NPT
    IP67, NEMA 6
    00000000000000
    A31 Off and 2 On
    Maintained
    63PST-1NO/2NC
    5 amp @ 120V AC, 2 amp @ 24V DC500V AC
    250V DC
    110V AC2254.7"2.3"1.4"1/2
    NPT
    IP67, NEMA 6
    0000000000000
    B31 Off and 2 On
    Maintained
    143PST-1NO/2NC
    3 amp @ 120V AC, 2.5 amp @ 24V DC240V AC
    250V DC
    24V DC2253.7"3.5"1.4"1/2
    NPT
    IP67
    0000000000000
     
    Screw-Terminal Wire Connection with Positive-Force Normally Closed Contacts and Rotating Head
    C42 Off and 2 On
    Maintained
    84PST-2NO/2NC
    4 amp @ 120V AC, 4 amp @ 24V DC240V AC
    24V DC
    24V AC, 24V DC2257.6"1.2"1.6"1/2
    NPT
    IP67
    0000000000000
     
    Keys
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