McMaster-Carr logo
    Filter by
    Switch Action at Temperature Setting
    Number of Terminals
    Switch Starting Position
    Industrial Info Compare
    Maximum Temperature Differential
    Switch Designation
    Industrial Info Compare
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Overall Depth
    Switch Action
    Industrial Info Compare
    Overall Height
    Overall Width
    DFARS Specialty Metals
    Horsepower @ Switching Voltage
    Maximum Temperature
    Fusible Link Melting Temperature
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    17 Products

    Fusible Link Switches

    Image of Product. Front orientation. Fusible Link Switches.
    Open or close a circuit when a fusible link melts. These switches are often used as a safety switch to shut off hydraulic equipment. Mount them to an electrical box indoors.
    Fusible Links—Replace the fusible link to reset the switch.
    Switches
    Fusible Links
    Fusible Link
    Melting Temp., ° F
    No. of Circuits
    Controlled
    Switch Starting
    Position
    Switch
    Action
    No. of
    Terminals
    Switch
    Designation
    Switching Current
    @ Voltage
    Max. Voltage,
    V AC
    Each
    Each
    Quick-Disconnect-Terminal Wire Connection
    13511 Off or 1 On
    Maintained
    3SPDT
    20 amp @ 120V AC1207306N100000001449A11100000
    15511 Off or 1 On
    Maintained
    3SPDT
    20 amp @ 120V AC1207306N20000001449A1120000
    16511 Off or 1 On
    Maintained
    3SPDT
    20 amp @ 120V AC1201147A650000001204A320000
    21211 Off or 1 On
    Maintained
    3SPDT
    20 amp @ 120V AC1201147A660000001204A330000
    28011 Off or 1 On
    Maintained
    3SPDT
    20 amp @ 120V AC1201147A710000001204A410000
     

    Snap-Acting Thermostats

    Image of Product. Front orientation. Thermostats. Snap-Acting Thermostats.
    Also known as snap discs, these thermostats switch on cooling systems or switch off heating systems when equipment gets too hot. Each thermostat has five temperature options for switch activation; choose the one that best suits your application.
    Unlike heat-actuated switches, these thermostats reset automatically, saving you the effort of replacing a melted fusible link. To calculate their reset temperature, subtract their differential temperature from the temperature you set them at. For example, a thermostat set at 100° F with a 20° F differential will reset at 80° F.
    Close Switch at Temperature Setting—Normally closed thermostats are also known as high-limit thermostats—they turn off at a set temperature. They’re often used with electric water heaters, stoves, and furnaces.
    Open Switch at Temperature Setting—Normally open thermostats are also known as low-limit thermostats—they turn on at a set temperature. They’re good for use with fans and blowers.
    Overall
    Temp. Setting, ° F
    Max. Temp. Differential,
    ° F
    Switch
    Designation
    Switch Starting
    Position
    Voltage, V AC
    Current,
    amp
    Wire Connection
    Terminal
    Size
    Face
    Dia.
    Ht.
    Wd.
    Dp.
    Hole Diameter
    (No. of)
    Mounting Fasteners
    Included
    Each
    Close Switch at Temperature Setting
    90, 100, 110, 120, 13020SPST
    1 Off
    120, 24025Quick-Disconnect Terminal1/4"
    3/4"1 3/4"2"1 3/8"3/16" (2)No8624N11000000
    140, 150, 160, 170, 18020SPST
    1 Off
    120, 24025Quick-Disconnect Terminal1/4"
    3/4"1 3/4"2"1 3/8"3/16" (2)No8624N1200000
     
    Open Switch at Temperature Setting
    135, 145, 155, 165, 17520SPST
    1 On
    120, 24025Quick-Disconnect Terminal1/4"
    3/4"1 3/4"2"1 3/8"3/16" (2)No8624N1600000
    135, 145, 155, 165, 17540SPST
    1 On
    120, 24025Quick-Disconnect Terminal1/4"
    3/4"1 3/4"2"1 3/8"3/16" (2)No8624N1300000
    175, 185, 195, 205, 21540SPST
    1 On
    120, 24025Quick-Disconnect Terminal1/4"
    3/4"1 3/4"2"1 3/8"3/16" (2)No8624N1400000
    210, 220, 230, 240, 25040SPST
    1 On
    120, 24025Quick-Disconnect Terminal1/4"
    3/4"1 3/4"2"1 3/8"3/16" (2)No8624N1500000
    250, 260, 270, 280, 29040SPST
    1 On
    120, 24025Quick-Disconnect Terminal1/4"
    3/4"1 3/4"2"1 3/8"3/16" (2)No8624N1700000
     
    back to top