McMaster-Carr logo
    Filter by
    Electrical Phase
    Number of Circuits Controlled
    System of Measurement
    Output Current
    Mounting Location
    Load Type
    Number of Terminals
    Control Current
    Switch Designation
    Industrial Info Compare
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Mounting Hole Diameter
    Number of Mounting Holes
    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)
    12 Products

    Analog-Input Proportional-Control Relays

    Image of Product. Front orientation. Contains Annotated. Proportional-Control Relays. 3 Circuits Controlled.

    3 Circuits

    Controlled

    Often used to regulate the speed of AC fans or keep a heater at a set temperature, these relays connect directly to sensors to calculate and adjust output power. This allows you to use an analog input without converting it to a digital signal to control output power. They are solid state and have no moving parts, so they require less maintenance and last longer, are quieter, and switch faster than mechanical relays. IP20 rated, they have recessed terminals that prevent fingers and other objects from touching live circuits. An integrated heat sink disperses heat to increase the relay’s current rating. The LED indicator shows input voltage loss and internal relay faults, so you can easily check that your system is operating properly.
    Mount them on 35 mm DIN rail (also known as DIN 3 rail) for fast installation. They also mount to flat surfaces.
    All relays have phase-angle switching to accurately control all types of loads. This mode signals at non-zero voltage, which can produce electrical noise.
    Three Phase—Three-phase relays switch every cycle.
    Full Cycle Switching Mode—Choose relays with full-cycle switching for resistive loads. This mode signals at zero voltage, so electrical interference is lower than phase-angle switching.
    Over Temperature—Relays with over-temperature protection stop power when it gets too hot and keeps it off until the issue is resolved. Connect an auxiliary contact (not included) to signal an alarm or status controller.
    Short Circuit—Relays with short-circuit protection stop power if there is an open circuit, short circuit, or output voltage loss until the issue is resolved. Connect an auxiliary contact (not included) to signal an alarm or status controller.
    Input
    Output
    No. of
    Terminals
    Analog
    Signal
    No.
    of
    Voltage,
    V AC
    Current,
    amp
    No.
    of
    Control Current,
    mA
    Switching Current
    @ Voltage
    Max. Switching
    Voltage, V AC
    Electrical Protection
    Type
    Ht.
    Wd.
    Dp.
    Features
    Each
    3 Circuits Controlled with 3 Off—3PST-NO
     
    Three Phase with Phase Angle and Full Cycle Switching Mode
    190 mA to 20 mA1180 to 6606535065 amp @ 600V AC660Over Temperature4.3"2.84"5.56"Integrated Heat Sink, LED Indicator, Recessed Terminals, Integrated Fan7048N230000000
    190 mA to 20 mA1180 to 6606535065 amp @ 600V AC660Short Circuit4.3"2.84"5.56"Integrated Heat Sink, LED Indicator, Recessed Terminals, Integrated Fan, Open Circuit, Configurable Alarm Outputs, Output Voltage Loss7048N22000000
     

    DIN-Rail Mount Solid State Relays

    Image of Product. Relay with Integrated Heat Sink. Front orientation. Contains Annotated. Relays. DIN-Rail Mount Solid State Relays.
    Image of Product. Relay with Integrated Heat Sink and Fan. Front orientation. Contains Annotated. Relays. DIN-Rail Mount Solid State Relays.
    Image of Product. Relay. Front orientation. Contains Annotated. Relays. DIN-Rail Mount Solid State Relays.

    Relay with

    Integrated Heat

    Sink

    Relay with Integrated Heat

    Sink and Fan

    Relay

    Unlike mechanical relays, these solid state relays have no moving parts, so they require less maintenance and last longer, switch faster, and are quieter. They mount on 35 mm DIN rail (also known as DIN 3) for fast installation. An LED indicator lights up when these relays are connected, so you can quickly confirm that they’re wired correctly. IP20 rated, their terminals are recessed, so they prevent fingers and other objects from touching live circuits.
    Integrated Heat Sink—Relays with an integrated heat sink disperse heat to increase the relay’s current rating.
    Integrated Fan—Relays with an integrated fan are best for applications that generate more heat. The fan automatically turns on to provide additional cooling. When the temperature exceeds 176° F, an alarm sends a signal to an external device, such as a controller or indicating light.
    No. of
    Terminals
    Input Voltage
    Control Current,
    mA
    Switching Current @
    Voltage (Load Type)
    Max. Switching
    Voltage, V AC
    hp @ Switching Voltage
    Ht.
    Wd.
    Dp.
    Features
    Each
    3 Circuits Controlled with 3 Off—3PST-NO
     
    Three Phase
    1524V AC, 120V AC, 208V AC, 240V AC, 277V AC/24V DC, 48V DC, 60V DC, 120V DC265 amp @ 600V AC (Full)66010 hp @ 230V AC
    20 hp @ 480V AC    		5.55"2.84"4.679"Integrated Heat Sink, Integrated Fan, LED Indicator6323T920000000
    155V DC, 6V DC, 12V DC, 24V DC, 30V DC1065 amp @ 600V AC (Full)66010 hp @ 230V AC
    20 hp @ 480V AC    		5.55"2.84"4.679"Integrated Heat Sink, Integrated Fan, LED Indicator6323T93000000
     

    Infrequent-Cycle Relays

    Image of Product. 2 Circuits. Front orientation. Contains Annotated. Infrequent-Cycle Relays. Infrequent-Cycle Relays, 4 Terminals.
    Image of Product. 3 Circuits. Front orientation. Contains Annotated. Infrequent-Cycle Relays. Infrequent-Cycle Relays, 6 Terminals.

    2 Circuits

    3 Circuits

    For use with equipment that cycles on and off, these relays meet UL 508 for air conditioning and heating. Connections are accessible from the front, so you can mount relays side-by-side. Also known as definite-purpose contactors.
    Auxiliary contacts for 3.8"-7.2" Ht. relays are also available. They allow you to add a signaling device or control another relay. Please select 6564K99, then select the McMaster-Carr part number of your relay and whether you want to switch one circuit on or off.
    Switching Current
    @ 600V AC, amp
    hp @
    Switching Voltage
    No. of
    Terminals
    Input Voltage
    Control
    Power
    Full
    Load
    Resistive
    Load
    Single Phase
    Three Phase
    Ht.
    Wd.
    Dp.
    Quick-Disconnect
    Tab Wd.
    Each
    2 Circuits Controlled with 2 Off—DPST-NO
     
    Quick-Disconnect × Screw Terminal
    424V AC10 VA50653 hp @ 115V AC
    10 hp @ 230V AC    		15 hp @ 230V AC
    30 hp @ 460V AC
    30 hp @ 575V AC    		3.8"2.4"3.4"0.25"6564K7740000000
    4120V AC10 VA50653 hp @ 115V AC
    10 hp @ 230V AC    		15 hp @ 230V AC
    30 hp @ 460V AC
    30 hp @ 575V AC    		3.8"2.4"3.4"0.25"6564K775000000
    4208V AC, 240V AC10 VA50653 hp @ 115V AC
    10 hp @ 230V AC    		15 hp @ 230V AC
    30 hp @ 460V AC
    30 hp @ 575V AC    		3.8"2.4"3.4"0.25"6564K776000000
    424V DC3.1 W50653 hp @ 115V AC
    10 hp @ 230V AC    		15 hp @ 230V AC
    30 hp @ 460V AC
    30 hp @ 575V AC    		3.8"2.4"3.4"0.25"6564K523000000
     
    3 Circuits Controlled with 3 Off—3PST-NO
     
    Quick-Disconnect × Screw Terminal
    624V AC10 VA50653 hp @ 115V AC
    10 hp @ 230V AC    		15 hp @ 230V AC
    30 hp @ 460V AC
    30 hp @ 575V AC    		3.8"2.4"3.4"0.25"6564K961000000
    6120V AC10 VA50653 hp @ 115V AC
    10 hp @ 230V AC    		15 hp @ 230V AC
    30 hp @ 460V AC
    30 hp @ 575V AC    		3.8"2.4"3.4"0.25"6564K962000000
    6208V AC, 240V AC10 VA50653 hp @ 115V AC
    10 hp @ 230V AC    		15 hp @ 230V AC
    30 hp @ 460V AC
    30 hp @ 575V AC    		3.8"2.4"3.4"0.25"6564K963000000
    624V DC3.1 W50653 hp @ 115V AC
    10 hp @ 230V AC    		15 hp @ 230V AC
    30 hp @ 460V AC
    30 hp @ 575V AC    		3.8"2.4"3.4"0.25"6564K524000000
     
    back to top