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    74 Products

    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.
    Covers—Snap onto the top of a terminal block to prevent accidental contact with a live wire. These covers include mounting clips that fit between the block and mounting screws.
    Markers—Label your terminal block connections so you can identify them at a glance. These markers extend from underneath the terminal block.
    Terminal Blocks
    Covers
    Markers
    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
    Each
    Each
     
    300V AC/300V DC—20 amp per Circuit
    322 to 12Screw TerminalNo. 6
    		3/8"1 3/4"7/8"1/2"257Black—0.17"400000000000000000000000000000000000000
     
    300V AC/300V DC—30 amp per Circuit
    322 to 12Screw TerminalNo. 6
    		7/16"2 1/16"1 1/8"1/2"257Black—0.18"400000000000000000000000000000000000
     
    600V AC/600V DC—20 amp per Circuit
    322 to 12Screw TerminalNo. 6
    		7/16"2 1/16"1 3/8"3/4"257Black—0.18"400000000000000000000000000000000000
     
    600V AC/600V DC—30 amp per Circuit
    314 to 12Screw TerminalNo. 8
    		9/16"2 11/16"1 5/16"11/16"257Black—0.22"400000000000000000000000000000000000
     
    600V AC/600V DC—75 amp per Circuit
    314 to 6Screw TerminalNo. 10
    		11/16"3 3/16"1 13/16"3/4"266Black—0.22"40000000000000———0———0
     
    600V AC/600V DC—200 amp per Circuit
    314 to 2Stud Terminal1/4"
    		13/16"2 9/16"3"2 7/16"257Black30.22"6000000000000———0———0
     
    Accessories for Terminal Blocks
    Jumpers
    Image of Product. Over Barrier Jumper. Front orientation. Terminal Block Jumpers. Terminal Blocks, Over-Barrier Jumper.

    Over

    Barrier

    Jumper

    Image of Product. Around Barrier Jumper. Front orientation. Terminal Block Jumpers. Terminal Blocks, Around-Barrier Jumper.

    Around Barrier

    Jumper

    Over-Barrier Jumper—Fit these jumpers over terminal block dividers to leave free space on the side. They connect adjacent terminals so you can connect multiple components with a single wire.
    Around-Barrier Jumper—These jumpers bend around the divider for a lower profile than over-barrier jumpers. They connect adjacent terminals so you can connect multiple components with a single wire.
    For No. of
    Circuits
    For Terminal Block Voltage
    Pkg.
    Qty.
    Pkg.
    Over-Barrier Jumper
     
    For 3/8" Terminal Center-to-Center
    2300V AC/300V DC250000000000000
     
    For 7/16" Terminal Center-to-Center
    2300V AC/300V DC25000000000000
    2600V AC/600V DC100000000000
     
    For 9/16" Terminal Center-to-Center
    2600V AC/600V DC100000000000
     
    For 11/16" Terminal Center-to-Center
    2600V AC/600V DC100000000000
     
    Around-Barrier Jumper
     
    For 3/8" Terminal Center-to-Center
    3300V AC/300V DC1000000000000
     
    For 7/16" Terminal Center-to-Center
    3300V AC/300V DC/600V AC/600V DC1000000000000
     
    Quick-Disconnect Adapters
    Image of Product. Straight. Front orientation. Terminal Block Adapters. Straight.

    Straight

    Image of Product. 90° Angle. Front orientation. Terminal Block Adapters. 90° Angle.

    90° Angle

    Image of Product. 45° Angle. Front orientation. Terminal Block Adapters. 45° Angle.

    45° Angle

    Convert screw terminal connections into quick-disconnect terminal connections.
    Shape
    For Terminal Block Voltage
    Tab
    Wd.
    Pkg.
    Qty.
    Pkg.
    For 3/8" Terminal Center-to-Center
    Straight300V AC/300V DC0.187"250000000000000
    90° Angle300V AC/300V DC0.187"25000000000000
    45° Angle300V AC/300V DC0.187"25000000000000
     
    For 7/16" Terminal Center-to-Center
    Straight300V AC/300V DC/600V AC/600V DC0.250"25000000000000
    90° Angle300V AC/300V DC/600V AC/600V DC0.250"25000000000000
    45° Angle300V AC/300V DC/600V AC/600V DC0.250"25000000000000
     
    For 9/16" Terminal Center-to-Center
    Straight300V AC/300V DC/600V AC/600V DC0.250"25000000000000
    90° Angle300V AC/300V DC/600V AC/600V DC0.250"25000000000000
    45° Angle300V AC/300V DC/600V AC/600V DC0.250"25000000000000
     

    Modular DIN-Rail Mount Terminal Blocks

    Image of System. Front orientation. Contains Annotated. Terminal Blocks. Modular DIN-Rail Mount Terminal Blocks.
    Mix and match these terminal blocks to get the exact number of circuits you need in a single setup. Add blocks for thermocouples, fuses, and grounding wire as needed. The blocks clip side by side onto DIN rail in control panels, creating tidy rows of circuits that you can identify and access on the spot.
    The screw-clamp terminals flatten your wire so it stays put when vibrated or pulled. If you need to change wiring frequently without adjusting a screw, consider a quick-connect terminal block with spring-clamp or lever-clamp terminals.
    Terminal Blocks with Screw-Clamp Terminals
    Image of Product. Front orientation. Terminal Blocks. Modular DIN-Rail Mount Terminal Blocks, Terminal Blocks with Screw-Clamp Terminals.
    Covers—Snap onto the exposed side of a terminal block to prevent accidental contact with a live wire.
    End Stops—Mount at the end of a group of terminal blocks so they don't slide when vibrated or bumped.
    Bar Jumpers—Metal poles create an electrical connection between blocks, so you can connect multiple components with a single wire. Blocks must be the same width for the jumpers to fit. Cut jumpers to size with a hacksaw or high-force wire cutter. Add covers so jumpers don't touch the screws on the outermost blocks.
    Insulation—Terminal blocks with insulated jumpers maintain their IP20 rating to prevent shocks and short circuits. Blocks with noninsulated jumpers lose their IP20 rating for touch protection because the jumpers introduce exposed metal to the circuit.
    Terminal Blocks
    Covers
    End Stops
    Bar Jumpers
    Each
    No. of
    Circuits
    No. of Terminals
    per Circuit
    For Wire
    Ga.
    Wd.,
    mm
    Ht.,
    mm
    For DIN Rail
    Trade Size
    Enclosure
    Rating
    Color
    1-24
    25-Up
    Each
    Each
    Insulation
    Each
     
    380V AC—22 amp per Circuit
    3220 to 126813IP20
    		Gray0000000000000000000000000000000000000000000Noninsulated0000000000000
     

    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
     

    High-Temperature Terminal Blocks

    Image of Product. Front orientation. Terminal Blocks. High-Temperature Terminal Blocks.
    These ceramic terminal blocks keep their shape and strength at temperatures up to 1,200° F—over four times higher than standard blocks. Mount them to surfaces in ovens, kilns, and other heat-generating equipment.
    Screw-Clamp-Terminal Wire Connection—The clamp flattens the wire to resist pullout and vibration better than screw terminals. For an even stronger and more conductive connection, crimp a terminal or wire ferrule onto the end of the wire.
    Mounting
    Holes
    No. of
    Circuits
    For Wire
    Ga.
    Wire Connection
    Terminal
    Size
    Terminal
    Ctr.-to-Ctr.
    Lg.
    Wd.
    Ht.
    Max. Temp.,
    ° F
    Material
    Color
    Dia.
    No.
    of
    Each
     
    300V AC/300V DC—20 amp per Circuit
    324 to 12Screw TerminalM3
    		5/16"1"15/16"3/4"1,200CeramicWhite——000000000000
    324 to 12Screw TerminalM3
    		1/2"1 7/16"15/16"3/4"1,200CeramicWhite0.14"200000000000
     
    300V AC/300V DC—30 amp per Circuit
    322 to 10Screw TerminalM4
    		9/16"1 5/8"1"3/4"1,200CeramicWhite0.14"200000000000
     
    300V AC/300V DC—65 amp per Circuit
    318 to 6Screw TerminalM4
    		11/16"1 7/8"1 1/16"15/16"1,200CeramicWhite0.14"200000000000
     
    600V AC/600V DC—20 amp per Circuit
    320 to 12Screw-Clamp TerminalNo. 8
    		7/8"2 7/16"1 1/4"13/16"840CeramicBeige0.19"2000000000000
     

    Distribution Blocks

    With the help of distribution blocks, you can take a high-current wire from your power source and connect it to one or more electrical devices.
    Screw-Clamp Terminal Input Connection
    Image of Product. Front orientation. Contains Annotated. Distribution Blocks. Screw-Clamp Terminal Input Connection.
    Image of Product. Terminal Block End Stop. Front orientation. Terminal Block End Stops.

    Terminal

    Block End

    Stop

    Blocks with a screw-clamp terminal input wire connection have a current rating based on NEC table 310-16 using 75° C copper wire.
    Detachable Cover—Blocks with a detachable cover prevent accidental contact with live circuits.
    Quick-Disconnect Load Connection—Blocks with a quick-disconnect load connection let you attach an auxiliary device, such as a horn or light.
    Terminal Block End Stops—End stops (sold separately) mount at the end of a group of blocks to prevent movement.
    Distribution Blocks
    Terminal
    Block End Stops
    No. of
    Connections Per Circuit
    Current per
    Circuit, amp
    Voltage
    Input (For
    Wire Ga.)
    Output (For
    Wire Ga.)
    Wd.
    Ht.
    Dp.
    Enclosure
    Rating
    Certification
    Flammability
    Rating
    Features
    Each
    Each
    DIN-Rail Mount
     
    3 Circuits
    1151,000V AC/1,000V DC1 (8-2)1 (10-6), 6 (14-6)3 5/16"3"2"IP20, NEMA 1
    		UL Recognized Component, CE Marked
    		——0000000000000000000000000
    175600V AC/600V DC1 (14-2/0)1 (14-2/0)2 5/8"3"2 9/16"—UL Recognized Component, CSA Certified, CE Marked
    		UL 94 V-0
    		Detachable Cover000000000000———0
    175600V AC/600V DC1 (14-2/0)4 (14-4)2 5/8"3"2 9/16"—UL Recognized Component, CSA Certified, CE Marked
    		UL 94 V-0
    		Detachable Cover000000000000———0
    175600V AC/600V DC1 (14-2/0)4 (14-4)2 5/8"3"2 9/16"—UL Recognized Component, CSA Certified, CE Marked
    		UL 94 V-0
    		Detachable Cover, Quick-Disconnect Load Connection000000000000———0
    175600V AC/600V DC1 (14-2/0)6 (14-4)2 5/8"3"2 9/16"—UL Recognized Component, CSA Certified, CE Marked
    		UL 94 V-0
    		Detachable Cover000000000000———0
    1751,000V AC/1,000V DC1 (6-2/0)1 (10-6), 6 (14-6)3 5/16"3"2"IP10, NEMA 1
    		UL Recognized Component, CSA Certified, CE Marked
    		UL 94 V-0
    		—00000000000000000000000
     
    Surface Mount
     
    3 Circuits
    335600V AC/600V DC1 (14-4/0)6 (14-2)5 5/8"5"3 15/16"—UL Listed, C-UL Listed
    		——0000000000000———0
    350600V AC/600V DC2 (14-2/0)6 (14-4)5 5/8"5"3 15/16"—UL Listed, C-UL Listed
    		——0000000000000———0
    510600V AC/600V DC2 (6-4/0)8 (14-2)5 5/8"5"3 15/16"—UL Listed, C-UL Listed
    		——0000000000000———0
     
    Stud-Terminal Input Connection
    Image of Product. Front orientation. Contains Annotated. Distribution Blocks. Stud-Terminal Input Connection.
    Detachable Cover—Blocks with a detachable cover prevent accidental contact with live circuits.
    No. of
    Connections Per Circuit
    Current per
    Circuit, amp
    Voltage
    Input (For
    Wire Ga.)
    Output (For
    Wire Ga.)
    Terminal
    Size
    Wd.
    Ht.
    Dp.
    Certification
    Flammability
    Rating
    Features
    Each
    DIN-Rail Mount
     
    3 Circuits
    200600V AC/600V DC1 (14-3/0)1 (14-3/0)1/4"
    		2 5/8"3"2 9/16"UL Recognized Component, CSA Certified, CE Marked
    		UL 94 V-0
    		Detachable Cover0000000000000
     
    Surface Mount
     
    3 Circuits
    310600V AC/600V DC1 (14-4/0)1 (14-4/0)3/8"
    		5 3/8"4"3 1/2"UL Recognized Component, CSA Certified
    		UL 94 V-0
    		Detachable Cover0000000000000
     

    Touch-Safe Terminal Blocks

    Image of Product. Style A. Front orientation. Terminal Blocks. Touch-Safe Terminal Blocks, Style A, Screw-Clamp-Terminal Wire Connection.
    Image of Product. Style C. Front orientation. Terminal Blocks. Touch-Safe Terminal Blocks, Style C, Screw-Terminal Wire Connection.

    Style A

    Style C

    These terminal blocks protect you from shocks and prevent short circuits. The terminals are recessed in the block, so you can't accidentally touch them when installing or adjusting your wire.
    Screw-Clamp-Terminal Wire Connection—The clamp flattens the wire to resist pullout and vibration better than screw terminals. For an even stronger and more conductive connection, crimp a terminal or wire ferrule onto the end of the wire.
    Mounting
    Holes
    Style
    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
     
    600V AC/600V DC—20 amp per Circuit
    A322 to 12Screw-Clamp TerminalM3
    		5/16"7/8"3/4"3/4"221White0.12"20000000000000
     
    600V AC/600V DC—30 amp per Circuit
    A318 to 10Screw-Clamp TerminalM3
    		3/8"1 1/16"3/4"13/16"221White0.15"2000000000000
     
    600V AC/600V DC—40 amp per Circuit
    A320 to 8Screw-Clamp TerminalM3
    		1/2"1 1/4"15/16"7/8"221White0.17"2000000000000
     
    600V AC/600V DC—63 amp per Circuit
    A314 to 6Screw-Clamp TerminalM3
    		9/16"1 9/16"1 1/8"1 1/16"221White0.17"2000000000000
     
    600V AC/600V DC—85 amp per Circuit
    C318 to 4Screw Terminal1/4"
    		5/8"1 3/4"1 1/4"1 1/8"302Black0.18"2000000000000
     

    Quick-Connect Terminal Blocks

    Image of Product. Front orientation. Terminal Blocks. Quick-Connect Terminal Blocks.
    Snap wire into place with a clamp instead of fussing with a screw. Release the spring clamp with a screwdriver, insert the wire, and push the clamp back down for a secure hold. For an easier fit in the small gaps in the block, attach a ferrule, pin terminal, or blade terminal before installing.
    DIN Rail Mounting Adapters—Install terminal blocks on DIN 3 rail with these mounting brackets. You can mount two-circuit terminal blocks with one adapter. For all other blocks, you'll need two.
    Terminal Blocks
    DIN Rail
    Mounting Adapters
    Mounting
    Holes
    Black
    White
    No. of
    Circuits
    No. of Terminals
    per Circuit
    For Wire
    Ga.
    Wire Connection
    Terminal
    Ctr.-to-Ctr.
    Lg.
    Wd.
    Ht.
    Max. Temp.,
    ° F
    For DIN Rail
    Trade Size
    Dia.
    No.
    of
    Each
    Each
    Each
    3420 to 12Spring-Clamp Terminal1/2"1 7/16"7/8"1 3/8"22130.13"200000000000000000000000000000000000

    Quick-Connect Modular DIN-Rail Mount Terminal Blocks

    Image of System. Front orientation. Contains Annotated. Terminal Blocks. Quick-Connect Modular DIN-Rail Mount Terminal Blocks.
    Pop wire in and out of these terminal blocks without adjusting a screw. Lift the clamp with a screwdriver or built-in lever, then release the clamp down onto the wire. Once clamped in place, the wire will stay put when vibrated, bent, or pulled.
    Mix and match these terminal blocks to get the exact number of circuits you need in a single setup. Add blocks for thermocouples, fuses, and grounding wire as needed. The blocks clip side by side onto DIN rail in control panels, creating tidy rows of circuits that you can identify and access on the spot.
    Terminal Blocks with Spring-Clamp Terminals
    Image of Product. Front orientation. Terminal Blocks. Quick-Connect Modular DIN-Rail Mount Terminal Blocks, Terminal Blocks with Spring-Clamp Terminals.
    Covers—Snap onto the exposed side of a terminal block to prevent accidental contact with a live wire.
    End Stops—Mount at the end of a group of terminal blocks so they don't slide when vibrated or bumped.
    Adjacent Jumpers—Metal poles create an electrical connection between adjacent terminal blocks, so you can connect multiple components with a single wire. Blocks must be the same width for the jumpers to fit.
    Alternate Jumpers—Connect terminals on two blocks of the same width, skipping a block in between. This reduces wire clutter and gives you flexibility to adjust your set-up in the future.
    Terminal Blocks
    Covers
    End Stops
    Adjacent Jumpers
    Alternate Jumpers
    Each
    No. of
    Circuits
    No. of Terminals
    per Circuit
    For Wire
    Ga.
    Wd.,
    mm
    Ht.,
    mm
    For DIN Rail
    Trade Size
    Choose a
    Color
    1-24
    25-Up
    Each
    Each
    Insulation
    Each
    Insulation
    Each
     
    300V AC/300V DC—15 amp per Circuit
    3228 to 1251033
    Blue
    ,
    Gray
    		0000000000000000000000000000000000000000000000Insulated0000000000000Insulated0000000000000
     
    Markers
    Image of Product. Front orientation. Terminal Block Markers. Blank.
    Image of Product. Front orientation. Terminal Block Markers. Numbered for Horizontal Rails.
    Image of Product. Front orientation. Terminal Block Markers. Numbered for Vertical Rails.

    Blank

    Numbered

    for

    Horizontal

    Rails

    Numbered

    for

    Vertical

    Rails

    Label your terminal block connections so you can identify them at a glance.
    Each
    For Terminal Block Wd., mm
    Number
    Range
    Includes
    Markers
    per Card
    Color
    1-24
    25-Up
    Blank
    5, 6, 8, 10, 12, 16, 25——100White000000000000000000
     
    Numbered for Horizontal Rails
    5, 6, 8, 10, 12, 16, 251 to 50Two of Each Number100White00000000000000000
     
    Numbered for Vertical Rails
    5, 6, 8, 10, 12, 16, 251 to 50Two of Each Number100White00000000000000000
     

    Through-Panel Terminal Blocks

    Image of Product. Front orientation. Terminal Blocks. Through-Panel Terminal Blocks.
    Mount these terminal blocks in a panel cutout to connect components on opposite sides. The screw-clamp terminals flatten your wire so it stays put when vibrated or pulled. For an even stronger and more conductive connection, crimp a terminal or wire ferrule onto the end of the wire.
    For Panel
    Cutout
    Mounting
    Holes
    No. of
    Circuits
    For Wire
    Ga.
    Wire Connection
    Terminal
    Size
    Terminal
    Ctr.-to-Ctr.
    Lg.
    Wd.
    Ht.
    Lg.
    Ht.
    Max. Temp.,
    ° F
    Color
    Dia.
    No.
    of
    Each
    600V AC/600V DC—60 amp per Circuit
    310 to 3Screw-Clamp TerminalM5
    		5/8"3"1 13/16"1 3/16"2"1"194Black0.21"20000000000000
     

    Space-Saving Circuit Board Terminal Blocks

    Image of Product. Front orientation. Terminal Blocks. Space-Saving Circuit Board Terminal Blocks.
    Streamline wiring on small or crowded circuit boards. These terminal blocks connect the same number of circuits as larger blocks in about half the space. Pins on the bottom are spaced to match the layout of circuit boards. Solder them onto your board for a secure hold.
    The screw-clamp terminals flatten your wire so it stays put when vibrated or pulled. For an even stronger and more conductive connection, crimp a terminal or wire ferrule onto the end of the wire.
    Pin
    No. of
    Circuits
    For Wire
    Ga.
    Wire Connection
    Terminal
    Size
    Terminal
    Ctr.-to-Ctr.
    Lg.
    Wd.
    Ht.
    Lg.
    Material
    Max. Temp.,
    ° F
    Color
    Pkg.
    Qty.
    Pkg.
     
    300V AC—15 amp per Circuit
    322 to 12Screw-Clamp TerminalM3
    		3/16"5/8"3/8"9/16"0.12"Tin-Plated Nickel220Black100000000000000
     

    Terminal Blocks for RTD and Thermocouple Connection Heads

    Image of Product. Oblong. Front orientation. Terminal Blocks. Terminal Blocks for RTD and Thermocouple Connection Heads, Oblong, Screw-Terminal Wire Connection.
    Image of Product. Round. Front orientation. Terminal Blocks. Terminal Blocks for RTD and Thermocouple Connection Heads, Round, Screw-Terminal Wire Connection.

    Oblong

    Round

    These terminal blocks fit inside connection heads for thermocouples and RTD. Make sure the block has enough circuits for your probe, and use a wire that matches your probe type. You can insert stripped wire directly or attach a terminal to prevent damage from the fastener.
    Mounting
    Slots
    No. of
    Circuits
    For Max.
    Wire Ga.
    Wire
    Connection
    Dia.
    Ht.
    Wd.
    Dp.
    For Thermocouple
    Wire Type
    For RTD Probe
    Resistance
    Max. Temp.,
    ° F
    Material
    Ht.
    Wd.
    No.
    of
    Each
    Oblong
    314
    		Screw Terminal—1 3/8"2"1"J, JX, K, KK, KX, T, TX100 Ω; 1,000 Ω1,000Ceramic3/16"9/16"200000000000000
     
    Round
    314
    		Screw Terminal1 15/16"——3/4"J, JX, K, KK, KX, T, TX100 Ω; 1,000 Ω1,000Ceramic3/16"5/16"2000000000000
     
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