Connector Blocks | McMaster-Carr

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Mounting Location

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Lever-Clamp Terminal

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Number of Terminals per Circuit

Color

Current per Circuit

Less than 100 amp

100 amp to 199 amp

200 amp to 249 amp

250 amp to 499 amp

500 amp or greater

Length

Number of Mounting Holes

Height

Material

Stainless Steel

For DIN Rail Height

Terminal Size

Maximum Temperature

Less than 200° F

200° F to 249° F

250° F to 499° F

500° F to 999° F

1,000° F or greater

Terminal Center-to-Center

Certification

CSA-US Certified

C-TUV SUD Certified

C-UL Recognized Component

TUV SUD Certified

UL Recognized Component

Number of Output Connections per Circuit

Export Control Classification Number (ECCN)

DFARS Specialty Metals

REACH

RoHS

Compliant with Exemptions

DIN Rail Trade Size

For Input Wire Gauge

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1,012 Products

Terminal Blocks

Modular DIN-Rail Mount Terminal Blocks

Modular DIN-Rail Mount Terminal Blocks

Mix and match blocks to get the exact number of circuits you need

Quick-Connect Modular DIN-Rail Mount Terminal Blocks

Quick-Connect Modular DIN-Rail Mount Terminal Blocks

Snap wire into place with a clamp instead of fussing with a screw

Quick-Connect Plug-and-Socket Modular DIN-Rail Mount Terminal Blocks

Quick-Connect Plug-and-Socket Modular DIN-Rail Mount Terminal Blocks

Pull the plug to cut power and swap out equipment

Space-Saving Modular DIN-Rail Mount Terminal Blocks

Space-Saving Modular DIN-Rail Mount Terminal Blocks

Snap onto low-profile DIN 2 rail to save space in compact enclosures

Terminal Blocks

Terminal Blocks

Dividers separate live wires and keep your setup tidy

Space-Saving Terminal Blocks

Space-Saving Terminal Blocks

Connect the same number of circuits as standard terminal blocks in a narrower footprint

Touch-Safe Terminal Blocks

Touch-Safe Terminal Blocks

Recessed terminals protect you from shocks and prevent short circuits

Touch-Safe Plug-and-Socket Terminal Blocks

Touch-Safe Plug-and-Socket Terminal Blocks

Cut power with the pull of a plug while preventing shocks and short circuits

Quick-Connect Terminal Blocks

Quick-Connect Terminal Blocks

Snap wire into place with a clamp instead of fussing with a screw

High-Temperature Terminal Blocks

High-Temperature Terminal Blocks

The ceramic body handles temperatures up to 1,200° F

Terminal Blocks for Motors

Terminal Blocks for Motors

Rotate jumpers to match wye, delta, and other wiring layouts on motors

Enclosure-Mounted Terminal Blocks

Enclosure-Mounted Terminal Blocks

Ready to install without mounting the terminal block first

Clear-View Enclosure-Mounted Terminal Blocks

Clear-View Enclosure-Mounted Terminal Blocks

Check circuits through the clear cover while blocking out dirt and liquids

Enclosure-Mounted Quick-Connect Terminal Blocks

Enclosure-Mounted Quick-Connect Terminal Blocks

Release a spring instead of fussing with a screw to attach your wire

Circuit Board Terminal Blocks

Circuit Board Terminal Blocks

Pins on the bottom align with circuit board layouts

Space-Saving Circuit Board Terminal Blocks

Space-Saving Circuit Board Terminal Blocks

Handle as much voltage as other circuit board blocks while taking up half the space

Plug-and-Socket Circuit Board Terminal Blocks

Plug-and-Socket Circuit Board Terminal Blocks

Cut power and swap out components on your circuit board without removing any wire

Through-Panel Terminal Blocks

Through-Panel Terminal Blocks

Mount in a panel cutout to connect components on opposite sides

Through-Panel Quick-Connect Terminal Blocks

Through-Panel Quick-Connect Terminal Blocks

Snap wire in by hand to connect components on opposite sides of a panel

Terminal Blocks for Thermocouples

Terminal Blocks for Thermocouples

Connect thermocouple wire without distorting or destroying the signal

Terminal Blocks for RTD and Thermocouple Connection Heads

Terminal Blocks for RTD and Thermocouple Connection Heads

Connect thermocouple and RTD probes to wire and instrumentation

Other Products

Distribution Bars

Distribution Bars

Route electricity within switchboards and battery banks; also known as bus bars

Distribution Blocks

Distribution Blocks

Distribute electricity from a single power source to several devices in a circuit

Conveyor Guide Cross Blocks

Conveyor Guide Cross Blocks

Join conveyor guide mounting rods at different angles

Grounding Bars

Create a convenient central grounding point by connecting multiple ground wires

Junction Blocks

Junction Blocks

Organize and separate multiple lines in a pipe system; air and fluid flow through the threaded holes

Setup Blocks

Use as mounting bases and supports to ensure accurate angles and spacing

Alignment Locks

Alignment Locks

Precisely align your mold halves

Telephone Wiring Blocks

Telephone Wiring Blocks

Keep telephone cable organized and accessible

T-Slotted Framing and Fittings

T-Slotted Framing and Fittings

The most versatile system, attach fittings along the continuous slots to build virtually anything

Grease Fitting Junction Blocks

Grease Fitting Junction Blocks

Send different types and amounts of grease from multiple grease fittings to lubricate several points

Grounding Blocks

Grounding Blocks

In cabinets and other tight spaces, ground multiple wires at one convenient spot

Grease Fitting Manifolds

Grease Fitting Manifolds

Lubricate multiple points with the same amount and type of grease using one grease fitting

Heating Blocks for 3D Printer Extruder Heating Elements

Heating Blocks for 3D Printer Extruder Heating Elements

Disperse heat to melt filaments evenly as they pass through extruders

Load Cell Junction Boxes

Load Cell Junction Boxes

Join multiple load cells to combine their weight measurements

Milling Machine Collet Blocks

Milling Machine Collet Blocks

Hold workpieces to machine parallel or square edges and drill crossholes

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)