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

    Harsh-Environment High-Current Distribution Bars

    Image of Product. Front orientation. Contains Annotated. Distribution Bars. Harsh-Environment High-Current Distribution Bars, Stud Terminals, 1 Circuit.
    Image of Product. Front orientation. Contains Annotated. Distribution Bars. Harsh-Environment High-Current Distribution Bars, Stud and Screw Terminals, 1 Circuit.
    Image of Product. Front orientation. Contains Annotated. Distribution Bars. Harsh-Environment High-Current Distribution Bars, Stud and Screw Terminals, 2 Circuits.

    Stud Terminals

    1 Circuit

    Stud and Screw Terminals

    1 Circuit

    Stud and Screw Terminals

    2 Circuits

    Protect connections against corrosion. These bars are tin-plated copper and have stainless steel terminals. Also known as bus bars, they serve as connection points between wires with ring or spade terminals. The underside is sealed, so the bars can be safely mounted to conductive surfaces.
    Distribution Bar Covers—Distribution bar covers protect the top of the bar and prevent accidental contact with live circuits.
    Distribution Bars
    Distribution
    Bar Covers
    Stud
    Terminals
    Screw
    Terminals
    Mounting
    Holes
    Voltage
    Current
    No. per
    Circuit
    Size
    No. per
    Circuit
    Size
    Lg.
    Wd.
    Ht.
    Mounting Fasteners
    Included
    Dia.
    No.
    of
    Certification
    Each
    Each
    Stud Terminals
     
    1 Circuit
    300V AC
    48V DC
    100 amp
    100 amp
    4No. 10
    4 3/16"7/8"1 1/8"No0.21"2CE Marked
    0000000000000000000000000
    300V AC
    48V DC
    130 amp
    150 amp
    41/4"
    5 7/8"1 1/4"1 1/2"No0.21"2CE Marked
    00000000000000000000000
    300V AC
    48V DC
    250 amp
    250 amp
    45/16"
    5 7/8"1 1/2"1 11/16"No0.21"2CE Marked
    000000000000000000000000
    300V AC
    48V DC
    250 amp
    250 amp
    65/16"
    7 3/4"1 1/2"1 11/16"No0.21"2CE Marked
    00000000000000000000000
     
    Stud and Screw Terminals
     
    1 Circuit
    300V AC
    48V DC
    100 amp
    100 amp
    2No. 10
    5No. 8
    4 3/16"7/8"1 1/8"No0.21"2CE Marked
    00000000000000000000000
    300V AC
    48V DC
    130 amp
    150 amp
    21/4"
    10No. 8
    5 7/8"1 1/4"1 1/2"No0.21"2CE Marked
    00000000000000000000000
    300V AC
    48V DC
    130 amp
    150 amp
    21/4"
    20No. 8
    9 1/8"1 1/4"1 1/2"No0.21"2CE Marked
    00000000000000000000000
    300V AC
    48V DC
    250 amp
    250 amp
    25/16"
    6No. 10
    5 7/8"1 1/2"1 11/16"No0.21"2CE Marked
    00000000000000000000000
    300V AC
    48V DC
    250 amp
    250 amp
    25/16"
    12No. 10
    7 3/4"1 1/2"1 11/16"No0.21"2CE Marked
    000000000000000000000000
    300V AC
    48V DC
    545 amp
    600 amp
    43/8"
    4No. 8
    7"2"2"No0.26"4CE Marked
    000000000000000000000000
    300V AC
    48V DC
    545 amp
    600 amp
    83/8"
    4No. 8
    11 3/8"2"2"No0.39"4CE Marked
    000000000000———0
     
    2 Circuits
    300V AC
    48V DC
    130 amp
    150 amp
    21/4"
    5No. 10
    4 7/8"2 9/16"1 1/4"No0.21"2CE Marked
    000000000000———0
     

    Terminal Blocks

    Image of Product. Front orientation. Terminal Blocks. Terminal Blocks.
    Also known as barrier terminal strips, these blocks have dividers to separate live wires and keep your setup tidy. Mount them directly onto control panels, enclosures, and equipment.
    A screw or stud connection creates a tight hold on the wire. You can insert stripped wire directly or attach a terminal to prevent damage from the fastener. Ring, spade, and hook terminals fit around the shank and hang on tightly, even in high-vibration setups. Pin terminals, blade terminals, and wire ferrules are easier to secure with the screw or stud. However, they don't stay put as well as other terminals when vibrated or pulled.
    For DIN 3 Rails—Unlike other surface-mount terminal blocks, these have a notch that snaps onto DIN 3 rail. You can also screw them directly onto your control panel or other surface.
    Mounting
    Holes
    No. of
    Circuits
    For Wire
    Ga.
    Wire
    Connection
    Terminal
    Size
    Terminal
    Ctr.-to-Ctr.
    Lg.
    Wd.
    Ht.
    Max. Temp.,
    ° F
    Color
    For DIN Rail
    Trade Size
    Dia.
    No.
    of
    Each
     
    600V AC/600V DC—200 amp per Circuit
    214 to 2Stud Terminal1/4"
    13/16"1 7/8"3"2 7/16"257Black30.22"40000000000000
    314 to 2Stud Terminal1/4"
    13/16"2 9/16"3"2 7/16"257Black30.22"6000000000000
     

    Terminal Blocks for Motors

    Image of Product. Front orientation. Terminal Blocks. Terminal Blocks for Motors.
    Rotate the jumpers on these blocks to match wye (Y-shaped), delta, and other wiring layouts on three-phase motors. Each jumper connects two terminals positioned side by side, across the block, or on a diagonal.
    For a reliable connection, attach a terminal to your wire before installing. Ring, spade, and hook terminals fit around the stud and hang on tightly, even in high-vibration setups. Pin terminals, blade terminals, and wire ferrules are easier to fit into the block, but they don't stay put as well as other terminals when vibrated or pulled.
    Mounting
    Holes
    No. of
    Circuits
    For Wire
    Ga.
    Wire
    Connection
    Terminal
    Size
    Terminal
    Ctr.-to-Ctr.
    Lg.
    Wd.
    Ht.
    Max. Temp.,
    ° F
    Color
    Dia.
    No.
    of
    Each
    1,000V AC/1,000V DC—35 amp per Circuit
    318 to 8Stud TerminalM4
    1 1/16"2 1/2"1 7/16"1 5/8"266Black0.23"20000000000000
     
    1,000V AC/1,000V DC—160 amp per Circuit
    312 to 2/0Stud TerminalM8
    1 9/16"4 7/16"2 11/16"3"266Black0.35"2000000000000
     
    1,000V AC/1,000V DC—315 amp per Circuit
    38
    Stud TerminalM12
    2 3/4"7 1/16"6 1/2"4 3/16"266Black0.43"40000000000000
     

    Distribution Posts

    Image of Product. Front orientation. Contains Annotated. Distribution Posts.
    Stack multiple ring or spade terminals on the stud terminal; the current flows through the stacked terminals. The round design saves space.
    Terminals
    Mounting
    Holes
    No. Per
    Circuit
    Size
    Voltage,
    V DC
    Lg.
    Wd.
    Ht.
    Mounting Fasteners
    Included
    Dia.
    No.
    of
    Certification
    Each
    Stud Terminals
     
    1 Circuit
    11/4"
    481 5/8"13/16"1 3/8"No3/16"2CE Marked
    000000000000
    13/8"
    483 5/16"1 3/4"2"No1/4"2CE Marked
    00000000000
     

    High-Current Distribution Posts

    Image of Product. Front orientation. Contains Annotated. Distribution Posts. High-Current Distribution Posts.
    Distribute up to 150 amps from the center stud terminal to the eight screw terminals around it. The round design saves space.
    Stud
    Terminals
    Screw
    Terminals
    Mounting
    Holes
    No. Per
    Circuit
    Size
    No. Per
    Circuit
    Size
    Current,
    amp
    Voltage,
    V DC
    Lg.
    Wd.
    Ht.
    Mounting Fasteners
    Included
    Dia.
    No.
    of
    Certification
    Each
    Stud and Screw Terminals
     
    1 Circuit
    11/4"
    8No. 8
    150483 5/16"1 3/4"2 3/16"No1/4"2CE Marked
    000000000000
    13/8"
    8No. 8
    150483 5/16"1 3/4"2"No1/4"2CE Marked
    00000000000
     

    Marine-Grade Battery Terminal Clamps

    Image of Product. Front orientation. Battery Terminals. Marine-Grade Battery Terminal Clamps.
    Made of lead, these clamps resist corrosion to stand up to marine-grade environments. Use a lug to attach your cable to the stud.
    For Wire
    Ga.
    Stud Thread
    Size
    For Battery
    Post Location
    Terminal
    Material
    Polarity
    Each
    Straight
    2/0
    5/16"-18
    TopLeadNegative0000000000000
    2/0
    3/8"-16
    TopLeadPositive000000000000
     
    back to top