McMaster-Carr logo
    Filter by
    System of Measurement
    Number of Circuits Controlled
    Switching Current
    Industrial Info Snippet
    Wire Connection
    Number of Terminals
    Operation Type
    Electrical Connection
    Relay Type
    Switch Action
    Mechanical Life Cycles
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    14 Products

    DIN-Rail Mount Interface Relays

    Isolate input and output circuits to prevent damage from voltage spikes, reduce signal interference, and amplify signal. These relays interface between your controller and components—they receive a signal from the controller to switch power on or off to the components. All have an LED indicator that shows you if your switch is actuated, so you know it’s connected and wired correctly. Use them to communicate signals to devices like motors or sensors. Mount them on 35 mm DIN rail (also known as DIN 3 rail).
    2 Circuits Controlled with 2 Off or 2 On—DPDT
    Image of Product. Front orientation. Contains Annotated. Interface Relays. DIN-Rail Mount Interface Relays, 2 Circuits Controlled, With Spring-Clamp Terminals.

    With Spring-Clamp

    Terminals

    With Spring-Clamp Terminals—Relays with spring-clamp terminals connect and disconnect to wires without needing to turn screws. Because there is no screw, these connections have less risk of loosening over time than screw terminals, even when there is vibration.
    PLC Output Protection—Relays with PLC output protection prevent voltage spikes created by the relay from damaging the output channel on your programmable logic controller (PLC).
    Interface Relays
    Replacement
    Relays
    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
    With Spring-Clamp Terminals
    824V DC4010 amp @ 240V AC2501/3 hp @ 120V AC3.9"1.2"3.3"LED Indicator, PLC Output Protection4144N1220000004144N133000000
     
    3 Circuits Controlled with 3 Off or 3 On—3PDT
    Image of Product. Front orientation. Contains Annotated. Interface Relays. DIN-Rail Mount Interface Relays, 3 Circuits Controlled, With Screw Terminals.

    With Screw Terminals

    PLC Output Protection—Relays with PLC output protection prevent voltage spikes created by the relay from damaging the output channel on your programmable logic controller (PLC).
    Interface Relays
    Replacement
    Relays
    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
    With Screw Terminals
    1124V DC4010 amp @ 240V AC2501/3 hp @ 120V AC3.1"1.1"3.3"LED Indicator, PLC Output Protection4144N1150000004144N129000000
     
    4 Circuits Controlled with 4 Off or 4 On—4PDT
    Image of Product. Front orientation. Contains Annotated. Interface Relays. DIN-Rail Mount Interface Relays, 4 Circuits Controlled, With Screw Terminals.
    Image of Product. Front orientation. Contains Annotated. Interface Relays. DIN-Rail Mount Interface Relays, 4 Circuits Controlled, With Spring-Clamp Terminals.

    With Screw Terminals

    With Spring-Clamp

    Terminals

    With Spring-Clamp Terminals—Relays with spring-clamp terminals connect and disconnect to wires without needing to turn screws. Because there is no screw, these connections have less risk of loosening over time than screw terminals, even when there is vibration.
    PLC Output Protection—Relays with PLC output protection prevent voltage spikes created by the relay from damaging the output channel on your programmable logic controller (PLC).
    Interface Relays
    Replacement
    Relays
    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
    With Screw Terminals
    1424V DC407 amp @ 240V AC2501/8 hp @ 120V AC3.1"1.1"3.3"LED Indicator, PLC Output Protection4144N1120000004144N126000000
     
    With Spring-Clamp Terminals
    1424V DC407 amp @ 240V AC2501/8 hp @ 120V AC3.9"1.2"3.3"LED Indicator, PLC Output Protection4144N119000004144N12600000
     

    Enclosed Relays

    Image of Product. Front orientation. Contains Annotated. Relays. Enclosed Relays.
    An enclosure covers the terminals on these relays to help prevent damage from dust or accidental bumps. They have an LED indicator, so you can quickly see what switching position your relay is in. Hardwire them to your equipment with the included wire leads. Rated NEMA 1, these relays are intended for indoor use only.
    Wire
    Lead
    Conduit
    Connection
    Input Voltage
    Control Current,
    mA
    Switching Current
    @ Voltage
    Max. Switching
    Voltage, V AC
    hp @ Switching Voltage
    Ht.
    Wd.
    Dp.
    Lg.
    No.
    of
    Gender
    Trade
    Size
    Thread
    Type
    Enclosure
    Rating
    Features
    Each
    1 Circuit Controlled with 1 Off or 1 On—SPDT
     
    Conduit-Hub Mount
    24V AC, 120V AC, 208V AC, 240V AC, 277V AC, 24V DC4010 amp @ 277V AC2771/2 hp @ 120V AC
    1/4 hp @ 277V AC
    1.7"2.8"1.5"16"6Male1/2
    NPT
    NEMA 1
    LED Indicator6628N18000000
     

    Open-Style Screw Terminal Relays

    Image of Product. Front orientation. Contains Annotated. Relays. Open-Style Screw Terminal Relays, 1 Circuit Controlled.
    Image of Product. Front orientation. Contains Annotated. Relays. Open-Style Screw Terminal Relays, 2 Circuits Controlled.

    1 Circuit Controlled

    2 Circuits

    Controlled

    Use these relays with industrial automation systems, security and emergency lighting, and small motors. They’re also known as power relays. Hardwire them to your circuit using the screw terminals.
    Relay Covers—Relay covers protect contacts from dust and dirt.
    Relays
    Relay Covers
    No. of
    Terminals
    Input Voltage,
    V AC
    Control Current,
    mA
    Switching Current
    @ Voltage
    hp @ Switching Voltage
    Ht.
    Wd.
    Dp.
    Each
    Each
    1 Circuit Controlled with 1 Off—SPST-NO
     
    Surface Mount
    42404030 amp @ 120V AC/24V DC1 1/2 hp @ 120V AC
    1 1/2 hp @ 240V AC
    2.5"2.5"2.2"7384K150000007384K45000000
     
    1 Circuit Controlled with 1 Off or 1 On—SPDT
     
    Surface Mount
    52404030 amp @ 120V AC/24V DC1 1/2 hp @ 120V AC
    1 1/2 hp @ 240V AC
    2.5"2.5"2.2"7384K56000007384K4500000
     
    2 Circuits Controlled with 2 Off—DPST-NO
     
    Surface Mount
    62404030 amp @ 120V AC/24V DC1 1/2 hp @ 120V AC
    1 1/2 hp @ 240V AC
    2.5"2.5"2.2"7384K51000007384K4500000
     
    2 Circuits Controlled with 2 Off or 2 On—DPDT
     
    Surface Mount
    82404030 amp @ 120V AC/24V DC1 1/2 hp @ 120V AC
    1 1/2 hp @ 240V AC
    3.3"2.5"2.4"7384K42000007384K4500000
     

    Washdown Enclosed Relays

    Image of Product. Front orientation. Contains Annotated. Relays. Washdown Enclosed Relays.
    A NEMA 4X enclosure protects these relays from washdowns, dirt, and corrosion. It also keeps terminals from being bumped accidentally, so you can mount these relays near working areas. Hardwire to your equipment with the wire leads.
    Wire
    Lead
    Conduit
    Connection
    Input Voltage
    Control Current,
    mA
    Switching Current
    @ Voltage
    Max. Switching
    Voltage, V AC
    hp @ Switching
    Voltage
    Ht.
    Wd.
    Dp.
    Lg.
    No.
    of
    Gender
    Trade
    Size
    Thread
    Type
    Each
    1 Circuit Controlled with 1 Off or 1 On—SPDT
    24V AC, 120V AC, 208V AC, 240V AC, 277V AC, 24V DC4010 amp @ 277V AC2771/2 hp @ 120V AC1.7"2.8"1.5"16"6Male1/2
    NPT
    4766T16000000
     
    back to top