McMaster-Carr logo
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    50 Products

    Circular-Pin Relays

    Image of Product. 8-Terminal Relay (1 Circuit Controlled). Front orientation. Contains Annotated. Relays. Circular-Pin Relays, 1 Circuit Controlled.
    Image of Product. 8-Terminal Relay (2 Circuits Controlled). Front orientation. Contains Annotated. Relays. Circular-Pin Relays, 2 Circuits Controlled.
    Image of Product. 11-Terminal Relay. Front orientation. Contains Annotated. Relays. Circular-Pin Relays, 3 Circuits Controlled.
    Image of Product. Relay Socket for 8-Terminal Relay. Front orientation. Relay Sockets. Circular-Pin Relays, 1.4" High.
    Image of Product. Relay Socket for 11-Terminal Socket. Front orientation. Relay Sockets. Circular-Pin Relays, 1.4" High.

    8-Terminal Relay

    (1 Circuit

    Controlled)

    8-Terminal Relay

    (2 Circuits

    Controlled)

    11-Terminal Relay

    Relay

    Socket for

    8-Terminal

    Relay

    Relay Socket

    for 11-Terminal

    Socket

    The circular pin terminals plug into relay sockets for easy installation. Also known as ice cube relays.
    Lockable Test Button—Relays with a lockable test button allow you to test whether a relay is working without an electrical signal. They’re helpful for testing relays before you install them, or for checking that installed relays are working properly.
    Horsepower @ Switching Voltage—Relays rated for horsepower (hp) are built to handle tough, repetitive-use applications.
    Sockets with Screw Terminals—Relay sockets (sold separately) mount to 35 mm DIN rail (also known as DIN 3 rail) or can be mounted to a flat surface.
    Relays
    Sockets with
    Screw Terminals
    No. of
    Terminals
    Input
    Voltage
    Control Current,
    mA
    Switching Current
    @ Voltage
    Max. Switching
    Voltage, V AC
    hp @ Switching Voltage
    Ht.
    Wd.
    Dp.
    Features
    Each
    Each
    1 Circuit Controlled with 1 Off or 1 On—SPDT
     
    Relay-Socket Mount
    824V AC8410 amp @ 240V AC/28V DC1/3 hp @ 120V AC
    1/2 hp @ 240V AC
    1.4"1.4"2"7580T20000007122K1900000
    8120V AC1810 amp @ 240V AC/28V DC1/3 hp @ 120V AC
    1/2 hp @ 240V AC
    1.4"1.4"2"7580T3000007122K190000
    812V DC10010 amp @ 240V AC/28V DC1/3 hp @ 120V AC
    1/2 hp @ 240V AC
    1.4"1.4"2"7580T52000007122K190000
    824V DC5210 amp @ 240V AC/28V DC1/3 hp @ 120V AC
    1/2 hp @ 240V AC
    1.4"1.4"2"7580T1000007122K190000
    8110V DC1110 amp @ 240V AC/28V DC1/3 hp @ 120V AC
    1/2 hp @ 240V AC
    1.4"1.4"2"7580T53000007122K190000
     
    2 Circuits Controlled with 2 Off or 2 On—DPDT
     
    Relay-Socket Mount
    812V AC19310 amp @ 240V AC2501.4"1.4"2.1"Lockable Test Button7170K42000007122K190000
    812V AC25010 amp @ 277V AC/30V DC1/3 hp @ 120V AC
    1 hp @ 277V AC
    1.4"1.38"2.2"7580T45000007122K190000
    824V AC8410 amp @ 240V AC/28V DC1/3 hp @ 120V AC
    1/2 hp @ 240V AC
    1.4"1.4"2"7580T31000007122K190000
    824V AC9610 amp @ 240V AC2501.4"1.4"2.1"Lockable Test Button, LED Power Indicator7170K31000007122K190000
    824V AC9610 amp @ 240V AC2501.4"1.4"2.1"Lockable Test Button7170K19000007122K190000
    8120V AC1810 amp @ 240V AC/28V DC1/3 hp @ 120V AC
    1/2 hp @ 240V AC
    1.4"1.4"2"7580T21000007122K190000
    8120V AC1910 amp @ 240V AC2501.4"1.4"2.1"Lockable Test Button, LED Power Indicator7170K21000007122K190000
    8120V AC1910 amp @ 240V AC2501.4"1.4"2.1"Lockable Test Button7170K13000007122K190000
    8240V AC910 amp @ 240V AC2501.4"1.4"2.1"Lockable Test Button7170K15000007122K190000
    8240V AC910 amp @ 240V AC/28V DC1/3 hp @ 120V AC
    1/2 hp @ 240V AC
    1.4"1.4"2"7580T15000007122K190000
    812V DC10010 amp @ 240V AC/28V DC1/3 hp @ 120V AC
    1/2 hp @ 240V AC
    1.4"1.4"2"7580T41000007122K190000
    812V DC11210 amp @ 240V AC2501.4"1.4"2.1"Lockable Test Button7170K41000007122K190000
    824V DC5210 amp @ 240V AC/28V DC1/3 hp @ 120V AC
    1/2 hp @ 240V AC
    1.4"1.4"2"7580T43000007122K190000
    824V DC5510 amp @ 240V AC2501.4"1.4"2.1"Lockable Test Button, LED Power Indicator7170K43000007122K190000
    824V DC5510 amp @ 240V AC2501.4"1.4"2.1"Lockable Test Button7170K11000007122K190000
     
    3 Circuits Controlled with 3 Off or 3 On—3PDT
     
    Relay-Socket Mount
    1124V AC8410 amp @ 240V AC/28V DC1/3 hp @ 120V AC
    1/2 hp @ 240V AC
    1.4"1.4"2"7580T22000007122K210000
    1124V AC9610 amp @ 240V AC2501.4"1.4"2.1"Lockable Test Button7170K22000007122K210000
    11120V AC1810 amp @ 240V AC/28V DC1/3 hp @ 120V AC
    1/2 hp @ 240V AC
    1.4"1.4"2"7580T25000007122K210000
    11120V AC1910 amp @ 240V AC2501.4"1.4"2.1"Lockable Test Button, LED Power Indicator7170K25000007122K210000
    11240V AC910 amp @ 240V AC2501.4"1.4"2.1"Lockable Test Button7170K16000007122K210000
    11240V AC910 amp @ 240V AC/28V DC1/3 hp @ 120V AC
    1/2 hp @ 240V AC
    1.4"1.4"2"7580T16000007122K210000
    1112V DC10010 amp @ 240V AC/28V DC1/3 hp @ 120V AC
    1/2 hp @ 240V AC
    1.4"1.4"2"7580T44000007122K210000
    1112V DC11210 amp @ 240V AC2501.4"1.4"2.1"Lockable Test Button7170K44000007122K210000
    1124V DC5210 amp @ 240V AC/28V DC1/3 hp @ 120V AC
    1/2 hp @ 240V AC
    1.4"1.4"2"7580T12000007122K210000
    1124V DC5510 amp @ 240V AC2501.4"1.4"2.1"Lockable Test Button7170K12000007122K210000
     

    Hazardous Location Relays

    Image of Product. Front orientation. Contains Annotated. Relays. Hazardous Location Relays, Screw Terminals.
    Image of Product. Front orientation. Contains Annotated. Relays. Hazardous Location Relays, Circular-Pin Terminals—Hermetically Sealed.
    Image of Product. Front orientation. Relay Sockets. Hazardous Location Relays.

    Screw Terminals

    Circular-Pin

    Terminals—Hermetically

    Sealed

    Sockets with

    Screw Terminals

    Sealed for safety, these relays are a good choice for hazardous locations where combustible or corrosive gases may be present.
    Screw Terminals—Relays with screw terminals are considered interface relays, so they’re placed between your controller and components to isolate the input and output circuits. This means they protect your component from voltage spikes while amplifying the relay’s signal and reducing interference for reliable transmission. They are often used for switching applications, such as small motors and pilot lights. The included relay socket mounts on 35 mm DIN rail (also known as DIN 3 rail).
    Circular-Pin Terminal—Relays with circular-pin terminals or quick-disconnect terminals are hermetically sealed—completely air- and watertight—to shield internal parts from gases, moisture, and other contaminants. They plug into relay sockets (sold separately) for easy installation.
    Sockets with Screw Terminals—Relay sockets mount to 35 mm DIN rail (also known as DIN 3 rail) or flat surfaces.
    Relays
    Sockets with
    Screw Terminals
    No. of
    Terminals
    Input Voltage
    Control Current,
    mA
    Switching Current
    @ Voltage
    Max. Switching
    Voltage
    hp @ Switching
    Voltage
    Ht.
    Wd.
    Dp.
    Enclosure
    Rating
    Hazardous Location Rating
    Each
    Each
    Screw Terminals
     
    1 Circuit Controlled with 1 Off or 1 On—SPDT
    524V AC, 24V DC13.56 amp @ 240V AC/30V DC400V AC/125V DC3.5"0.2"2.9"IP20
    NEC Class I Division 2 Groups A, B, C, D
    4190N11000000———0
    524V AC, 24V DC13.516 amp @ 240V AC/24V DC400V AC/300V DC3.5"0.6"2.9"IP20
    NEC Class I Division 2 Groups A, B, C, D
    4190N1500000———0
    548V AC, 48V DC46 amp @ 240V AC/30V DC400V AC/125V DC3.5"0.2"2.9"IP20
    NEC Class I Division 2 Groups A, B, C, D
    4190N1200000———0
    548V AC, 48V DC416 amp @ 240V AC/24V DC400V AC/300V DC3.5"0.6"2.9"IP20
    NEC Class I Division 2 Groups A, B, C, D
    4190N1700000———0
    5120V AC, 120V DC3.56 amp @ 240V AC/30V DC400V AC/125V DC3.5"0.2"2.9"IP20
    NEC Class I Division 2 Groups A, B, C, D
    4190N1300000———0
    5120V AC, 120V DC3.516 amp @ 240V AC/24V DC400V AC/300V DC3.5"0.6"2.9"IP20
    NEC Class I Division 2 Groups A, B, C, D
    4190N1900000———0
    5240V AC, 240V DC3.56 amp @ 240V AC/30V DC400V AC/125V DC3.5"0.2"2.9"IP20
    NEC Class I Division 2 Groups A, B, C, D
    4190N1400000———0
    5240V AC, 240V DC3.516 amp @ 240V AC/24V DC400V AC/300V DC3.5"0.6"2.9"IP20
    NEC Class I Division 2 Groups A, B, C, D
    4190N2200000———0
     
    2 Circuits Controlled with 2 Off or 2 On—DPDT
    824V AC, 24V DC13.58 amp @ 240V AC/24V DC400V AC/300V DC3.5"0.6"2.9"IP20
    NEC Class I Division 2 Groups A, B, C, D
    4190N1600000———0
    848V AC, 48V DC48 amp @ 240V AC/24V DC400V AC/300V DC3.5"0.6"2.9"IP20
    NEC Class I Division 2 Groups A, B, C, D
    4190N1800000———0
    8120V AC, 120V DC3.58 amp @ 240V AC/24V DC400V AC/300V DC3.5"0.6"2.9"IP20
    NEC Class I Division 2 Groups A, B, C, D
    4190N2100000———0
    8240V AC, 240V DC3.58 amp @ 240V AC/24V DC400V AC/300V DC3.5"0.6"2.9"IP20
    NEC Class I Division 2 Groups A, B, C, D
    4190N2300000———0
     
    Circular-Pin Terminals—Hermetically Sealed
     
    2 Circuits Controlled with 2 Off or 2 On—DPDT
    8120V AC1012 amp @ 120V AC/24V DC300V AC1/3 hp @ 120V AC1.6"1.4"2.1"NEC Class I Division 2 Groups A, B, C, D
    7125T320000007125T4100000
    824V DC3812 amp @ 120V AC/24V DC300V AC1/3 hp @ 120V AC1.6"1.4"2.1"NEC Class I Division 2 Groups A, B, C, D
    7125T340000007125T410000
     
    3 Circuits Controlled with 3 Off or 3 On—3PDT
    11120V AC10012 amp @ 120V AC/240V AC300V AC1/3 hp @ 120V AC1.6"1.4"2.1"NEC Class I Division 2 Groups A, B, C, D
    7125T1110000007122K210000
     

    Solid State Spade-Terminal Relays

    Often used for high-speed switching at low-current levels, these solid state relays have no moving parts, so they switch faster, last longer, and are quieter than mechanical switches.
    Relay-Socket Mount
    Image of Product. Relay-Socket Mount. Front orientation. Contains Annotated. Relays. Solid State Spade-Terminal Relays, 1 Circuit Controlled, 0.187" Quick-Disconnect Tab Width.
    Image of Product. Sockets
with Screw
Terminals. Front orientation. Relay Sockets. Solid State Spade-Terminal Relays.

    Relay-Socket

    Mount

    Sockets with

    Screw Terminals

    Sockets with Screw Terminals—Relay sockets mount directly on 35 mm DIN rail (also known as DIN 3 rail) for fast installation. Relay sockets with screw terminals can also mount to a flat surface.
    Relays
    Sockets with
    Screw Terminals
    No. of
    Terminals
    Input Voltage, V DC
    Switching Current
    @ Voltage
    Max. Switching
    Voltage, V DC
    Ht.
    Wd.
    Dp.
    Quick-Disconnect
    Tab Wd.
    Each
    Each
    1 Circuit Controlled with 1 Off—SPST-NO
    85, 6, 12, 243 amp @ 48V DC481.102"0.85"1.437"0.187"9250K40000007122K22000000
     
    back to top