McMaster-Carr logo
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    63 Products
    About Electrical Switches
    industrial info icon

    Choose a switch with the right trigger type, number of inputs, and control functions to power your equipment.

    Flush-Mount 19 mm Panel-Mount Push-Button Switches

    Image of Product. Front orientation. Push-Button Switches. Flush-Mount 19 mm Panel-Mount Push-Button Switches.
    Because these switches mount flush against a panel, they're easy to clean and hard to damage. They're rated IP67 for protection from temporary submersion.
    No. of Circuits
    Controlled
    Switch Starting
    Position
    Switch
    Action
    No. of
    Terminals
    Switch
    Designation
    Switching Current
    @ Voltage
    Dia.
    For Max.
    Panel Thk.
    Dp. Behind
    Panel
    Quick-Disconnect
    Tab Wd.
    Enclosure
    Rating
    Each
    Stainless Steel Actuator Base with Quick-Disconnect-Terminal Wire Connection—Not Illuminated (250V AC/30V DC Maximum Voltage)
     
    Flush
    11 Off or 1 On
    Momentary
    3SPDT
    5 amp @ 250V AC/30V DC7/8"3/8"1 5/16"0.11"IK08, IP40, IP67
    6023T16000000
     

    3/4" Panel-Mount Key Switches

    Image of Product. Front orientation. Key Switches. 3/4" Panel-Mount Key Switches, Screw-Terminal Wire Connection.
    Image of Product. Front orientation. Key Switches. 3/4" Panel-Mount Key Switches, Tab Wire Connection.
    Image of Product. Front orientation. Key Switches. 3/4" Panel-Mount Key Switches, Wire Lead Connection.

    Screw-Terminal

    Wire Connection

    Tab Wire

    Connection

    Wire Lead Connection

    Prevent accidental activation and limit access—these switches require a key to turn circuits on or off. All fit into a standard panel cutout.
    Keyed Alike—Keyed alike switches all open with the same key.
    Keyed Differently—Keyed differently switches each open with a unique key.
    Master Keyed—Keyed differently/master keyed switches are keyed differently but can be used with a master key (sold separately).
    Key Switches
    Replacement Keys
    Master Keys
    Wire
    Leads
    No. of Circuits
    Controlled
    Switch Starting
    Position
    Switch
    Action
    No. of
    Terminals
    Switch
    Designation
    Switching Current
    @ Voltage
    Max. Voltage
    Dia.
    Dp. Behind
    Panel
    No.
    of
    Lg.
    No. of Keys
    Included
    Key Removal
    Position
    Each
    Each
    Each
    2 Positions with Metal Actuator Base
     
    Keyed Alike with Screw-Terminal Wire Connection
    11 Off
    Momentary
    2SPST-NO
    6 amp @ 120V AC240V AC7/8"1 3/4"2Center7188K340000007188K3700000———0
    11 Off
    Maintained
    2SPST-NO
    6 amp @ 120V AC240V AC7/8"1 1/2"2Center7188K32000007188K350000———0
    11 Off
    Maintained
    2SPST-NO
    6 amp @ 120V AC240V AC7/8"1 1/2"2Center, Right7188K33000007188K360000———0
     
    Keyed Alike with Tab Wire Connection
    11 Off or 1 On
    Maintained
    3SPDT
    4 amp @ 125V AC/24V DC125V AC
    28V DC
    7/8"1 1/16"2Center7278K12000007278K20000———0
    11 Off or 1 On
    Maintained
    3SPDT
    4 amp @ 125V AC/24V DC125V AC
    28V DC
    7/8"1 1/16"2Center, Right7278K13000007278K30000———0
    22 Off or 2 On
    Maintained
    6DPDT
    4 amp @ 125V AC/24V DC125V AC
    28V DC
    7/8"1 1/16"2Center7278K14000007278K40000———0
    22 Off or 2 On
    Maintained
    6DPDT
    4 amp @ 125V AC/24V DC125V AC
    28V DC
    7/8"1 1/16"2Center, Right7278K15000007278K50000———0
     
    Keyed Alike with Wire Lead Connection
    11 Off
    Momentary
    2SPST-NO
    7 amp @ 28V AC/28V DC28V AC
    28V DC
    7/8"1 1/8"210"2Center7188K101000007188K1040000———0
    11 Off
    Maintained
    2SPST-NO
    7 amp @ 28V AC/28V DC28V AC
    28V DC
    7/8"1 1/8"210"2Center, Right7188K22000007188K620000———0
     
    Keyed Differently with Wire Lead Connection
    11 Off
    Momentary
    2SPST-NO
    7 amp @ 28V AC/28V DC28V AC
    28V DC
    7/8"1 1/8"210"2Center7188K102000007188K1050000———0
    11 Off
    Maintained
    2SPST-NO
    7 amp @ 28V AC/28V DC28V AC
    28V DC
    7/8"1 1/8"210"2Center, Right7188K21000007188K610000———0
     
    Keyed Differently/Master Keyed with Wire Lead Connection
    11 Off
    Momentary
    2SPST-NO
    7 amp @ 28V AC/28V DC28V AC
    28V DC
    7/8"1 1/8"210"2Center7188K10300000———07188K10600000
    11 Off
    Maintained
    2SPST-NO
    7 amp @ 28V AC/28V DC28V AC
    28V DC
    7/8"1 1/8"210"2Center, Right7188K2300000———07188K140000
     
    3 Positions with Metal Actuator Base
     
    Keyed Alike with Tab Wire Connection
    11 Off or 1 On
    Maintained
    3SPST-NO
    4 amp @ 125V AC/24V DC125V AC
    28V DC
    7/8"1 1/16"2Center, Left, Right7278K1900000———0———0
    11 Off or 1 On
    Maintained
    4SPST-NO
    4 amp @ 125V AC/24V DC125V AC
    28V DC
    7/8"1 1/16"2Center7278K1800000———0———0
    22 Off or 2 On
    Maintained
    8DPDT
    4 amp @ 125V AC/24V DC125V AC
    28V DC
    7/8"1 1/16"2Center7278K1700000———0———0
     

    Low-Voltage 19 mm Panel-Mount Push-Button Doorbell Switches

    Image of Product. Front orientation. Doorbell Switches. Low-Voltage 19 mm Panel-Mount Push-Button Doorbell Switches.
    Operate low-voltage devices that require less than 48 volts, such as doorbells and buzzers. These switches have one input terminal and three output terminals to control up to three devices at once.
    No. of Circuits
    Controlled
    Switch Starting
    Position
    Switch
    Action
    No. of
    Terminals
    Switch
    Designation
    Actuator
    Color
    Switching Current @ Voltage
    Max. Voltage
    Dia.
    Dp. Behind
    Panel
    Each
    Metal Actuator Base with Screw-Terminal Wire Connection
     
    Projecting Snap In
    11 Off
    Momentary
    4SPST-NO
    Black4 amp @ 24V AC, 1 amp @ 24V DC48V AC
    48V DC
    1"1 1/16"69755K64000000
     

    Washdown 3/4" Panel-Mount Key Switches

    Image of Product. Front orientation. Key Switches. Washdown 3/4" Panel-Mount Key Switches, Screw-Terminal Wire Connection.
    Image of Product. Front orientation. Key Switches. Washdown 3/4" Panel-Mount Key Switches, Tab Wire Connection.

    Screw-Terminal Wire

    Connection

    Tab Wire

    Connection

    Rated NEMA 4 or IP66, these switches are protected from washdowns. They require a key to turn circuits on or off, limiting access to sensitive equipment. All fit into a standard panel cutout.
    Keyed Alike—Keyed alike switches all open with the same key.
    Keyed Differently—Keyed differently switches each open with a unique key.
    Key Switches
    Replacement Keys
    No. of Circuits
    Controlled
    Switch Starting
    Position
    Switch
    Action
    No. of
    Terminals
    Switch
    Designation
    Switching Current
    @ Voltage
    Max. Voltage
    Dia.
    Dp. Behind
    Panel
    No. of Keys
    Included
    Key Removal
    Position
    Enclosure
    Rating
    Each
    Each
    2 Positions with Metal Actuator Base
     
    Keyed Alike with Screw-Terminal Wire Connection
    21 Off and 1 On
    Maintained
    4DPST-1NO/1NC
    10 amp @ 300V AC/24V DC300V AC
    24V DC
    7/8"1 7/8"2Center, RightNEMA 4, IP66
    7182K130000007182K200000
    21 Off and 1 On
    Maintained
    4DPST-1NO/1NC
    20 amp @ 240V AC690V AC7/8"2 5/8"2Center, RightIP66
    7182K101000007182K20000
     
    Keyed Alike with Tab Wire Connection
    11 Off or 1 On
    Maintained
    3SPDT
    4 amp @ 125V AC/28V DC125V AC
    28V DC
    7/8"1 1/4"2Center, RightNEMA 4, IP66
    7182K11000007182K20000
     
    Keyed Differently with Screw-Terminal Wire Connection
    21 Off and 1 On
    Maintained
    4DPST-1NO/1NC
    10 amp @ 300V AC/24V DC300V AC
    24V DC
    7/8"1 7/8"2Center, RightNEMA 4, IP66
    7182K1400000———0
     
    Keyed Differently with Tab Wire Connection
    11 Off or 1 On
    Maintained
    3SPDT
    4 amp @ 125V AC/28V DC125V AC
    28V DC
    7/8"1 1/4"2Center, RightNEMA 4, IP66
    7182K1200000———0
     

    Panel-Mount Light Dimmers

    Image of Product. Front orientation. Light Dimmers. Panel-Mount Light Dimmers.
    Brighten or dim your facility or workstation's light from a control panel. These dimmers fit through a standard panel cutout. Lightly press and hold your finger to adjust the light level. Rated IP67, these dimmers are so watertight they could even handle brief submersion. They also seal out dust.
    Dimmers are great if you want to control the brightness from one place but turn the light on or off from a switch somewhere else. For example, you might want to dim a light over your storage area from a main control panel for energy efficiency but still be able to turn it on or off when you enter the area.
    Light Dimmers with On/Off Switch—Dimmers with an on/off switch control power and brightness in one. Quickly tap them to turn the light on or off. When you turn it on, it returns to the last brightness level you set.
    Light Dimmers
    Light Dimmers with
    On/Off Switch
    For Bulb
    Type
    No. of Circuits
    Controlled
    No. of
    Terminals
    Input Voltage,
    V DC
    Max. Current,
    amp
    Dia.
    Dp. Behind
    Panel
    For Panel
    Cutout Dia.
    For Max.
    Panel Thk.
    Wire
    Connection
    Material
    Enclosure
    Rating
    Each
    Each
    LED1312/241.57/8"3/4"3/4"1/2"Wire Leads304 Stainless Steel
    IP67
    9552N120000009552N11000000

    Single-Action Air Directional Control Valves

    Image of Product. Front orientation. Directional Control Valves. Single-Action Air Directional Control Valves, Style Y.

    Style Y

    Manually control these valves by pushing or turning the actuator. Also known as 3-way or 3/2 valves, they create one action, such as extending a cylinder. They direct airflow from the inlet to your equipment and exhaust return airflow to create motion. In the off position, they exhaust air pressure from the system, allowing equipment to reset so the action can be repeated. Valves without an exhaust connection exhaust air to the atmosphere.
    Push-to-Connect Female Inlet x Push-to-Connect Female Outlet
    Image of Product. Front orientation. Directional Control Valves. Single-Action Air Directional Control Valves, Style Y.

    Style Y

    Hand Return—Valves with hand return actuation stay actuated and return to their original position only when you move the actuator again.
    Valve Position—Fail-closed valves block airflow until actuated. Valves that are both fail closed and fail open can be installed to block airflow, or allow air to flow until actuated.
    Flow Coefficient (Cv)—Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve. When selecting between valves with the same port size, choose the valve with the higher flow coefficient to ensure it provides enough airflow to operate your system.
    Overall,
    mm
    Style
    No. of Flow
    Ports
    For Inlet
    Tube OD, mm
    For Outlet
    Tube OD, mm
    Max. Flow Rate
    @ 100 psi, scfm
    Flow Coefficient
    (Cv)
    Pressure
    Range, psi
    Vacuum
    Rating
    Actuator
    Color
    Lg.
    Wd.
    Ht.
    For Panel
    Cutout Dia.
    Mounting Fasteners
    Included
    Each
    Fail Closed
     
    Hand Return
    Y3445.750.180 to 145Not RatedBlue47.61941.33/4"Yes5360T12000000
    Y36612.770.390 to 145Not RatedBlue47.61941.33/4"Yes5360T1400000
    Y38816.920.530 to 145Not RatedBlue541941.33/4"Yes5360T1600000
    Y3101028.420.890 to 145Not RatedBlue60.322.247.63/4"Yes5360T2100000
     

    High-Security 3/4" Panel-Mount Key Switches

    Image of Product. Front orientation. Key Switches. High-Security 3/4" Panel-Mount Key Switches.
    With a round key that is difficult to duplicate, these switches provide a higher degree of security than standard key switches.
    Keyed Alike—Keyed alike switches all open with the same key.
    Keyed Differently—Keyed differently switches each open with a unique key.
    Master Keyed—Keyed differently/master keyed switches are keyed differently but can be used with a master key (sold separately).
    Key Switches
    Replacement Keys
    Wire
    Leads
    No. of Circuits
    Controlled
    Switch Starting
    Position
    Switch
    Action
    No. of
    Terminals
    Switch
    Designation
    Switching Current
    @ Voltage
    Max. Voltage
    Dia.
    Dp. Behind
    Panel
    No.
    of
    Lg.
    No. of Keys
    Included
    Key Removal
    Position
    Each
    Each
    2 Positions with Metal Actuator Base
     
    Keyed Alike with Wire Lead Connection
    11 Off
    Maintained
    2SPST-NO
    7 amp @ 28V AC/28V DC28V AC
    28V DC
    7/8"1 3/16"210"2Center, Right7188K260000007188K31000000
     
    Keyed Differently with Wire Lead Connection
    11 Off
    Maintained
    2SPST-NO
    7 amp @ 28V AC/28V DC28V AC
    28V DC
    7/8"1 3/16"210"2Center, Right7188K25000007188K5100000
     
    Keyed Differently/Master Keyed with Wire Lead Connection
    11 Off
    Maintained
    2SPST-NO
    7 amp @ 28V AC/28V DC28V AC
    28V DC
    7/8"1 3/16"210"2Center, Right7188K2700000———0
     
    Keys

    Two-Speed Two-Action Air Directional Control Valves with Full Shut-Off

    Image of Product. Front orientation. Directional Control Valves. Two-Speed Two-Action Air Directional Control Valves with Full Shut-Off, Style A.

    Style A

    These valves close all ports in the off position to stop equipment in a locked position with air pressure holding it in place. Often used to extend and then retract a cylinder at different speeds, they create two actions and have two exhaust ports, which allows you to control the speed of each action by attaching a flow control valve to each exhaust port. They direct airflow from the inlet to your equipment and exhaust return airflow to create motion. Also known as 4-way and 5/3 closed center valves.
    Hand Return—Valves with hand return actuation stay actuated and return to their original position only when you move the actuator again.
    Flow Coefficient (Cv)—Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve. When selecting between valves with the same port size, choose the valve with the higher flow coefficient to ensure it provides enough airflow to operate your system.
    Overall
    Style
    No. of Flow
    Ports
    Inlet
    Size
    Outlet
    Size
    Exhaust
    Connection
    Max. Flow Rate
    @ 100 psi, scfm
    Flow Coefficient
    (Cv)
    Pressure
    Range, psi
    Vacuum
    Rating
    Lg.
    Wd.
    Ht.
    Mount Type
    For Panel
    Cutout Dia.
    Mounting Fasteners
    Included
    Mounting
    Hole Dia.
    Each
    Threaded Female Inlet x Threaded Female Outlet
     
    Hand Return
    A51/8 NPT1/8 NPTThreaded17.50.50 to 145Not Rated3 3/4"1 5/8"3 3/4"Panel, Screw In3/4"No0.22"3368K150000000
     

    Simultaneous Two-Action Air Directional Control Valves

    Image of Product. Front orientation. Directional Control Valves. Simultaneous Two-Action Air Directional Control Valves.
    Also known as 4-way and 5/3 pressure center valves, these valves create two actions at the same time, such as extending two single-acting cylinders at once. They direct airflow from the inlet to your equipment and exhaust return airflow to create motion.
    Hand Return—Valves with hand return actuation stay actuated and return to their original position only when you move the actuator again.
    Flow Coefficient (Cv)—Flow coefficient (Cv) indicates how much airflow can pass through a valve.
    Overall
    No. of Flow
    Ports
    Inlet
    Size
    Outlet
    Size
    Exhaust
    Connection
    Max. Flow Rate
    @ 100 psi, scfm
    Flow Coefficient
    (Cv)
    Pressure
    Range, psi
    Vacuum
    Rating
    Lg.
    Wd.
    Ht.
    Mount Type
    For Panel
    Cutout Dia.
    Mounting Fasteners
    Included
    Mounting
    Hole Dia.
    Each
    Threaded Female Inlet x Threaded Female Outlet
     
    Hand Return
    51/8 NPT1/8 NPTThreaded17.50.50 to 145Not Rated3 3/4"1 5/8"3 3/4"Panel, Screw In3/4"No0.22"3368K170000000
     

    Two-Speed Two-Action Air Directional Control Valves with Exhausting Shut-Off

    Image of Product. Front orientation. Directional Control Valves. Two-Speed Two-Action Air Directional Control Valves with Exhausting Shut-Off, Style B.

    Style B

    In the off position, these valves exhaust all air pressure, allowing the equipment to return to the neutral position. Often used to extend and then retract a cylinder at different speeds, they create two actions and have two exhaust ports, which allows you to control the speed of each action by attaching a flow control valve to each exhaust port. They direct airflow from the inlet to your equipment and exhaust return airflow to create motion. Valves without an exhaust connection exhaust air to the atmosphere. Also known as 4-way and 5/3 exhaust center valves.
    Hand Return—Valves with hand return actuation stay actuated and return to their original position only when you move the actuator again.
    Flow Coefficient (Cv)—Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve. When selecting between valves with the same port size, choose the valve with the higher flow coefficient to ensure it provides enough airflow to operate your system.
    Overall
    Style
    No. of Flow
    Ports
    Inlet
    Size
    Outlet
    Size
    Exhaust
    Connection
    Max. Flow Rate
    @ 100 psi, scfm
    Flow Coefficient
    (Cv)
    Pressure
    Range, psi
    Vacuum
    Rating
    Lg.
    Wd.
    Ht.
    Mount Type
    For Panel
    Cutout Dia.
    Mounting Fasteners
    Included
    Mounting
    Hole Dia.
    Each
    Threaded Female Inlet x Threaded Female Outlet
     
    Hand Return
    B51/8 NPT1/8 NPTThreaded17.50.50 to 145Not Rated3 3/4"1 5/8"3 3/4"Panel, Screw In3/4"No0.22"3368K160000000
     

    Two-Speed Two-Action Air Directional Control Valves

    Image of Product. Front orientation. Directional Control Valves. Two-Speed Two-Action Air Directional Control Valves, Style A.

    Style A

    Often used to extend and then retract a cylinder at different speeds, these valves create two actions and have two exhaust ports. They direct airflow from the inlet to your equipment and exhaust return airflow to create motion. Also known as 4-way and 5/2 valves.
    Spring Return—Valves with spring return actuation return to their original position as soon as you release the actuator.
    Hand Return—Valves with hand return actuation stay actuated and return to their original position only when you move the actuator again.
    Exhaust Connection—Valves with threaded exhaust connection type allow you to control the speed of each action by attaching a flow control valve to each exhaust port. Valves with no exhaust connection type exhaust air to the atmosphere.
    Flow Coefficient (Cv)—Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve. When selecting between valves with the same port size, choose the valve with the higher flow coefficient to ensure it provides enough airflow to operate your system.
    Overall
    Style
    No. of Flow
    Ports
    Inlet
    Size
    Outlet
    Size
    Exhaust
    Connection
    Max. Flow Rate
    @ 100 psi, scfm
    Flow Coefficient
    (Cv)
    Pressure
    Range, psi
    Vacuum
    Rating
    Lg.
    Wd.
    Ht.
    Mount Type
    For Panel
    Cutout Dia.
    Mounting Fasteners
    Included
    Mounting
    Hole Dia.
    Each
    Threaded Female Inlet x Threaded Female Outlet
     
    Spring Return
    A51/8 NPT1/8 NPTThreaded17.50.50 to 145Not Rated3 3/4"1 5/8"3 3/4"Panel, Screw In3/4"No0.22"3368K140000000
     
    Hand Return
    A51/8 NPT1/8 NPTThreaded17.50.50 to 145Not Rated3 3/4"1 5/8"3 3/4"Panel, Screw In3/4"No0.22"3368K13000000
     

    Create-Your-Own Push/Pull Mechanical Control Cables

    Image of Product. Panel Mount. Front orientation. Contains Annotated. Mechanical Control Cables. Create-Your-Own Push/Pull Mechanical Control Cables, Stainless Steel Cable Core with Plastic Cover, Panel Mount.

    Panel Mount

    Pair these cables with a knob or lever (not included) to operate valves, throttle controls, and HVAC damper controls from a distance. They're flexible for weaving around obstructions.
    Panel Mount—Panel-mount cables are also known as bulkhead mount cables. They have threaded fittings with hex nuts and washers at each end for mounting through a panel.
    Thread
    Dynamic Load
    Cap., lb.
    Panel Mount
    Size
    Lg.
    Overall
    Lg., ft.
    Max. Stroke
    Lg.
    Push
    Pull
    Bend
    Radius
    Fitting Material
    Temp. Range,
    ° F
    For Panel
    Cutout Dia.
    Fitting
    Lg.
    Each
    Stainless Steel Cable Core with Plastic Cover
    5/16"-24
    1 3/16"34"1401406"Zinc-Plated Steel-65 to 2253/4"11 9/16"3125K5330000000
    5/16"-24
    1 3/16"63"1701706"Zinc-Plated Steel-65 to 2253/4"10 1/16"3125K531000000
    5/16"-24
    1 3/16"66"80806"Zinc-Plated Steel-65 to 2253/4"14 9/16"3125K539000000
    3/8"-24
    1 3/8"64"5005006"Zinc-Plated Steel-65 to 2253/4"12 37/64"3125K548000000
    3/8"-24
    1 3/8"66"3003006"Zinc-Plated Steel-65 to 2253/4"15 37/64"3125K553000000
     
    Accessories for Mechanical Control Cables
    back to top