McMaster-Carr logo
    Filter by
    Switching Voltage
    Industrial Info Snippet
    Actuator Style
    Housing Height
    Switch Starting Position
    Wire Connection
    Number of Terminals
    Actuation Direction
    Actuator Height
    Enclosure Rating
    Industrial Info Compare
    Actuation Torque
    Cable OD
    Electrical Connection
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Housing Depth
    Housing Length
    Material
    Maximum Temperature
    Minimum Temperature
    Mounting Hole Diameter
    Number of Circuits Controlled
    Operating Temperature
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    2 Products

    Heavy Duty Limit Switches

    Image of Product. Front orientation. Contains Annotated. Limit Switches. Heavy Duty Limit Switches.
    Image of Product. Front orientation. Contains Annotated. Left Actuation. Heavy Duty Limit Switches.
    Image of Product. Front orientation. Contains Annotated. Right Actuation. Heavy Duty Limit Switches.
    Rugged enough for mining operations, these limit switches require a high actuation force, like heavy rocks moving on a conveyor. They open and close a circuit as quickly as a snap-acting switch but have a larger actuator for larger objects. The roller on the end of the lever arm reduces friction to prevent wear and tear on the switch. Rated NEMA 4 and 13 as well as IP67, these switches are protected from dirt, oil spraying, and temporary submersion.
    To determine if you need a right or left actuation direction, stand facing where you'll put the switch. If objects will be passing to the right, you'll need a right actuation direction. If they'll be passing to the left, you'll need a left actuation direction.
    Housing
    Actuation
    Direction
    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.
    For Max.
    Cable OD
    No. of
    Terminals
    Lg.
    Ht.
    Dp.
    Housing
    Material
    Enclosure Rating
    Each
    Roller Lever Actuator
     
    Screw-Terminal Wire Connection
    Left22 Off
    		Momentary
    		DPST-NO
    		20 amp @ 120V AC, 5 amp @ 120V DC600V AC
    600V DC    		150-10 to 1855.7"0.5"42.3"5"3.4"AluminumNEMA 4, NEMA 13, IP67
    		7904N220000000
    Right22 Off
    		Momentary
    		DPST-NO
    		20 amp @ 120V AC, 5 amp @ 120V DC600V AC
    600V DC    		150-10 to 1855.7"0.5"42.3"5"2"AluminumNEMA 4, NEMA 13, IP67
    		7904N21000000
     
    back to top