Terminal Boxes | McMaster-Carr

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Fiberglass-Reinforced Polymer Concrete

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Food and Beverage

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Stainless Steel

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Printed Circuit Board

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Certification

ABS Type Approved

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C-UL Recognized Component

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Number of Mounting Holes

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Export Control Classification Number (ECCN)

DFARS Specialty Metals

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How can we improve?

4,418 Products

Electrical

Terminal Blocks

Terminal Blocks

Create tidy rows of wire connections that you can identify, test, and adjust on the spot

Wall Plates

Cover switches and outlets for a finished look or to close them off when not in use

Electrical Cords

Electrical Cords

Connect equipment and devices to a power supply

Electrical Enclosures

Electrical Enclosures

House and protect power supplies, control panels, and other electrical equipment

Electrical Enclosure Covers

Electrical Enclosure Covers

Replace Fibox enclosure covers

Electrical Enclosure Pedestals

Electrical Enclosure Pedestals

Mount enclosures at a comfortable height to access switches, displays, and other controls

Electrical Enclosure Pole Mounts

Electrical Enclosure Pole Mounts

Everything you need to secure enclosures to round poles or beams

Electrical Enclosure Panel Mounts

Electrical Enclosure Panel Mounts

Add a secondary panel that swings to mount more components in your enclosure

Electrical Enclosure Mounting Channels

Electrical Enclosure Mounting Channels

Position components inside electrical enclosures without drilling holes, which can leak

Electrical Enclosure Floor Stands

Electrical Enclosure Floor Stands

Mount enclosures to the floor above hazards such as water

Outlet Boxes

House electrical components such as on-off switches, receptacles, and dimmer knobs

Outlet Box Covers

Outlet Box Covers

Enclose wiring for outlets and switches or block off unused components

Outlet Box Extenders

Outlet Box Extenders

Add depth to an outlet box when there’s not enough space for components

Single-Board Computer Enclosures

Single-Board Computer Enclosures

Protect your Raspberry Pi, Arduino, or other board from dust and impact

Potting Boxes

Fill with potting compound to protect electronic assemblies from dust, moisture, and vibration

Circuit Board Enclosures

Circuit Board Enclosures

Hold circuit boards to protect them from dust, liquids, or overheating

Underground Enclosures

Underground Enclosures

Bury in the ground or in concrete to protect and access utilities such as electric and water lines

Electronics Racks

Electronics Racks

Mount servers, automation controls, and computers in less space than electronics cabinets

Electronics Cabinets

Electronics Cabinets

Store and organize servers, computers, and automation controls

Raceway and Raceway Fittings

Raceway and Raceway Fittings

Route and guard wiring along indoor surfaces

Console Enclosures

Console Enclosures

Build out interfaces with buttons, gauges, and other components to monitor and control machinery

Monitor Enclosures

Monitor Enclosures

Shield displays and televisions from impact, dust, and splashing liquids

Relays

Electrically open and close circuits to control power to lights, motors, and other equipment

Motor Starters

Turn motors on and off and protect them from current overloads

Motor Starter Overload Protectors

Motor Starter Overload Protectors

Upgrade your motor starter protector to use less energy and emit less heat

Motor Switches

Turn motors, lighting, and electric heat circuits on and off

Motor Speed Controls

Motor Speed Controls

Manage the speed of AC and DC motors

Timer Relays

Turn machinery on or off after receiving an electrical signal that starts the timer

Motor Voltage Monitors

Motor Voltage Monitors

Protect electric motors by cutting power when faults occur

Power Supplies

Convert your facility's AC voltage to power equipment that runs on DC voltage

Battery Holders

Battery Holders

Create an electrical connection between batteries and contacts to power equipment

Measuring and Inspecting

Load Cell Junction Boxes

Load Cell Junction Boxes

Join multiple load cells to combine their weight measurements

Power Transmission

Electric Motors

Electric Motors

Keep machinery and equipment moving with AC or DC power

Electric Gearmotors

Electric Gearmotors

A motor and speed reducer in one to slow speed and increase torque in AC- or DC- power applications

Servomotors

Create rotary motion with accurate positioning and fine control over speed and torque

Stepper Motors

The motor shaft turns in small, equal increments for precise positioning

Stepper Gearmotors

Stepper Gearmotors

Stepper motor and gearbox in one for high torque in areas large motors won’t fit

Electric Actuators

Electric Actuators

Push and pull loads with more precise positioning than air and hydraulic cylinders

Building and Machinery Hardware

Strut Channel Framing and Fittings

Strut Channel Framing and Fittings

Secure fittings in the U-shaped channel to route conduit and pipe or build other structures

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