Electrical Steel | McMaster-Carr

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8,243 Products

Electrical Power, Networking, and Controlling

Outlet Boxes

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

162 products

Conduit and Fittings

Protect wiring from impact and the environment in runs indoors, outdoors, and underground

507 products

Outlet Box Covers

Enclose wiring for outlets and switches or block off unused components

43 products

Electrical Enclosures

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

1,847 products

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

249 products

Electrical Enclosure Plugs

Block or seal holes in outlet boxes and enclosures to keep out debris, dust, and moisture

39 products

Outlet Box Extenders

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

46 products

Cable Trays and Fittings

Organize and route bundles of cable and hose while keeping them accessible anywhere along the run

109 products

DIN Rails

Mount terminal blocks, power supplies, relays, and other devices on walls and in enclosures

31 products

Weatherheads

Bring power into buildings and protect the entry point from rain and snow

10 products

Raceway and Fittings

Route and guard wiring along surfaces in your facility

227 products

Conduit Locknut and Reaming Pliers

Tighten conduit locknuts and ream both the inside and outside of conduit with a single tool

1 product

Cable Entry Panels

Pass multiple cords into an enclosure while sealing out moisture, dust, and other contaminants

20 products

DIN Rail Mounting Brackets

Create space behind rails to fit wiring and bulky components

12 products

Fish Tape

Hook to the end of wire and move it through conduit and raceway

7 products

Cable Pulling Grips

Tug on the loop to tighten wire mesh around cable and pull it through conduit

14 products

Cord Grip Pliers

Assemble and install cord grips in a range of thread sizes

1 product

Electrical Enclosure Panels

Mount and connect components inside enclosures

121 products

Console Enclosures

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

9 products

Electronics Cabinets

Store and organize servers, computers, and automation controls

15 products

Electrical Enclosure Pedestals

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

6 products

Cable Support Grips

Reduce tension and vibration that damage hanging cable; also known as bus drop grips

49 products

Electrical Enclosure Panel Mounts

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

2 products

Monitor Enclosures

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

13 products

DIN Rail Stops

Keep components such as terminal locks and relays from shifting on rails

4 products

Electrical Enclosure Drains

Release moisture to keep components dry

2 products

Wire Sleeving

Bundle wiring and protect from abrasion and heat

34 products

Potting Boxes

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

5 products

Electrical Enclosure Inspection Windows

View components without exposing them to dust and moisture

29 products

Electrical Enclosure Drain Vents

Prevent moisture from getting trapped inside enclosures while letting air flow through

5 products

Electronics Rack Equipment Installation Supports

Create temporary ledges to support heavy equipment as you mount it to a rack

4 products

Cable and Hose Carriers

Route, protect, and guide moving cable

8 products

Electronics Racks

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

9 products

Electrical Enclosure Floor Stands

Mount enclosures to the floor above hazards such as water

8 products

Power Connectors

Plugs, sockets, receptacles, and other connectors for powering equipment

69 products

USB Connectors

Plugs, sockets, receptacles, and adapters to make USB connections

11 products

Latching Connectors

Protect connections in wet or harsh environments while keeping them accessible

14 products

Fiber-Optic Connector Pliers

Safely and securely grip connectors in packed panels without damaging them

1 product

Mini Connector Thread Adapters

Join two connectors that both have internal threads

3 products

ix Industrial Sockets

Pair with plugs to add ix Industrial connections to printed circuit boards

6 products

Breakaway Connectors

If pulled or stressed, these disconnect without damaging cables and equipment

3 products

Mini Receptacles

Install in walls and panels and pair with plugs to send power and signal

21 products

Mini Connector Caps

Shield mini connectors when they're not in use

6 products

D-Sub Connectors

Plugs, sockets, receptacles, and adapters for connecting computers, monitors, and printers

35 products

Coaxial Adapters

Join coaxial cords that have the same gender or different connection types

5 products

Metric Circular Receptacles

Install in walls and panels and pair with plugs to make metric connections

30 products

Metric Circular Connector Caps

Keep metric circular connectors safe when they're not in use

4 products

Extension Cord Reels

Keep extension cords easy to access without creating a tripping hazard

80 products

Building Cable

With designations such as NM and UF, building cable brings power to wall outlets and outlet boxes

4 products

Ethernet Cord Reels

Keep an ethernet cord on hand but out of the way

1 product

Robot Teach Pendant Cord Reels

Keep the cords connecting your robot controller and teach pendant organized and out of the way

16 products

Metric Circular Cords

Send power and control signals to equipment with metric connections

8 products

Coaxial Cable

Transmit audio, data, and video signals

5 products

Power Cords

Connect equipment and devices to a power source

2 products

Breakaway Cords

Disconnect if pulled to prevent stress on cord

6 products

Ethernet Cords

Send data between computers, printers, servers, and switches

2 products

Mini Cords

Often used to send power and control signals to automated systems, motors, and pumps

18 products

USB Cords

Transfer data between computers, printers, and mobile devices

10 products

Distribution Bars

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

22 products

Terminal Blocks

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

43 products

Wire Splices, Connectors, and Taps

Join wire and protect the connection

39 products

Slip Rings

Maintain an electrical link between a moving part and a stationary part

4 products

Patch Panels

Expand and reconfigure a data network when space inside your enclosure is limited

1 product

Electrical Connector Holding Tools

Hold electrical connectors in place to safely join wires

1 product

Wall Plates

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

38 products

Terminal Covers

Block out dirt and corrosion to protect battery terminals

2 products

Wire Splice Pliers

A long nose with stepped jaws presses down evenly for parallel crimping

1 product

Electrical Disconnect Pliers

A hook-shaped tip disconnects the locking tab on electrical connectors

1 product

Terminals

Attach wire endings everywhere from circuit breaker panels to batteries

57 products

Electrical Contact Removal Tools

Remove pin-and-sleeve contacts from connectors

4 products

Outlet Strips

Plug in multiple devices to power them from a single outlet

34 products

Electrical Contact Installation Tools

Add pin-and-sleeve contacts to connectors

4 products

Punch-Down Tools

Terminate and cut wire on 66 and 110 wiring blocks

5 products

Data Connection Hubs

Add USB, DisplayPort, or HDMI ports to your computer to connect multiple device

1 product

Outlet Strip Mounts

Snap in outlet strips for quick mounting on flat surfaces

1 product

Disconnect Switches

Make sure equipment stays turned off during inspection and maintenance

68 products

Proximity Sensors

Detect the presence or position of objects from a short sensing distance

164 products

Finger-Touch Switches

Lightly touch with your finger to turn circuits on and off

18 products

Transfer Switches

Switch to backup power during an outage

7 products

Ultrasonic Sensors

Measure the distance to objects and the level of liquids and materials

8 products

Foot Switches

Step on the pedal to actuate circuits while keeping your hands free for other tasks

23 products

Snap-Acting Switches

Open and close circuits quickly to minimize arcing and sticking; often used as door-open indicators

6 products

Push-Button Switch Covers

Completely cover push-button switches to protect them from moisture and dust

1 product

Timer Switches

Automatically turn electrical equipment on or off after a set interval

25 products

Rotary Encoders

Track the distance, direction, and speed of travel of motor shafts, conveyors, and wheels

26 products

Limit Switches

Turn equipment on or off when objects touch the actuator; often used for conveyors and bin filling

21 products

Safety Switches

Protect people by cutting power to machines when access doors open; also known as interlock switches

1 product

Magnetic Switches

Actuate when a magnet comes within sensing distance; often used to detect when doors or windows open

30 products

Motor Switches

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

11 products

Emergency Stop Switches

Cut power to equipment during emergencies

3 products

Joystick Switches

Move the joystick to steer and position cranes, robot arms, and other machinery

5 products

Push-Button Switches

Our most common switch type actuates circuits with the push of a button

17 products

Ribbon Switches

Place across driveways or walkways to actuate when foot and vehicle traffic pass over

2 products

Photoelectric Sensors

Detect objects from longer distances than proximity and ultrasonic sensors

19 products

Automatic Door Switches

Doors open when you touch a button or the switches detect motion

13 products

Control Panels

Connect and monitor your fire alarm system

1 product

Computer Monitors

Display information in tough conditions such as on factory floors and outdoor jobsites

3 products

Single-Board Computer Enclosures

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

8 products

Linear Position Sensors

Measure the position of an object moving in a straight line; also known as string pots

16 products

Stepper Motor Drives

Control the speed and position of stepper motors

6 products

VFDs

Control the speed and torque of AC electric motors

3 products

HMI Covers

Access HMI devices and other controls mounted to an enclosure while keeping out liquids and dust

44 products

Motor Starters

Turn motors on and off and protect them from current overloads

44 products

Computers

Sturdy and reliable for harsh industrial jobsites, from frigid freezers to sweltering foundries

9 products

DC Motor Drives

Control the speed and torque of DC electric motors

3 products

Relay Pliers

Thin, angled tips pop relays free from sockets in confined areas without damage

1 product

Varistors

Protect sensors, programmable logic controllers, and other small components from electrical surges

20 products

Wire and Cable Crimpers

Crimp connectors onto electrical wire or cable

143 products

Wire Stripper/Crimpers

Strip wire and crimp connectors with one tool

14 products

Wire and Cable Strippers

Remove the outer insulation on wire and cable

99 products

Wire and Cable Stripper Bushings

Snap into cordless wire strippers to quickly remove insulation

30 products

Wire and Cable Crimper Dies

Attach to cordless crimpers to secure connectors onto cable

63 products

Spark Plug Pliers

Grip boots firmly and remove them to access or inspect spark plugs

1 product

Battery Contacts

Add or replace contacts in battery holders and circuit boards

18 products

Battery Clip Retaining Pins

Hold battery retaining clips closed to stop batteries from coming loose

2 products

Battery Terminal Fasteners

Replace bolts in battery terminals

3 products

Temporary Power Distribution Boxes

Send power to equipment from generators or other sources when electricity is not available

4 products

Battery Terminal Crimpers

Crimp battery terminals to secure them to battery cable

4 products

Backup Power Supplies

Transfer power to a built-in battery during partial and complete outages

8 products

Battery Terminal Adapters

Convert one battery terminal style to another

1 product

Battery Chargers

Charge everything from large-cell to cordless tool to household batteries

1 product

Battery Trays

Drain fluid under large-cell batteries to prevent pooling

2 products

Battery Terminal Reamers

Spread open and clean battery terminal clamps all at once

1 product

Battery Springs

Replace springs in battery holders and contacts

8 products

Battery Holders

Create an electrical connection between batteries and contacts to power equipment

36 products

Grounding Rods

Link an electrical system to a ground

18 products

Bonding and Grounding Clamps

Add cable or use included cable to create a grounding path, which prevents static charge buildup

45 products

Bonding and Grounding Reels

Neatly store included grounding clamp and cable, which prevent static buildup; tug to retract cable

12 products

Bonding and Grounding Cable

Add clamps to create a grounding path, which prevents static charge buildup

7 products

Grounding Clamps

Attach grounding wire to equipment to ground electrical current

10 products

Static Control Brushes

Mount on conveyor lines, brushing material as it passes, to remove static charge

6 products

Fuse Clamps

Avoid excessive heat and blown fuses by securing fuses into fuse blocks

7 products

Power Supplies

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

146 products

Power Transmission

Electric Motors

Keep machinery and equipment moving with AC or DC power

313 products

Stepper Motors

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

167 products

Electric Gearmotors

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

279 products

Servomotors

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

37 products

Motor Mounts

Adjust motor positions in belt-driven systems to increase efficiency and reduce wear on components

34 products

Stepper Gearmotors

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

6 products

Solenoids

Extend, retract, or rotate to actuate switches, valves, locks, and other components

81 products

Electric Actuators

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

48 products

Stopper Cylinders

Extend to stop loads on a conveyor and retract to let them pass

3 products

Air Cylinders

Push and pull loads to do everything from stamping materials to sorting parts on conveyors

27 products

Electric Slides

Move parts with precision in electronics, robotics, and other automated processes

81 products

Constant-Force Retractors

Attach an object and the spring controls tension as the object is slowly pulled out and back

23 products

Clutch/Brakes

Control when to transmit power with a clutch and when to hold a load in place with a brake

5 products

Clutches

Start and stop the transmission of power to machinery

50 products

Torque Limiters

Keep torque at or below a set limit to control tension or braking or protect machinery from overload

86 products

Gear Boxes

Transmit rotary motion without changing speed, or reduce speed while increasing torque

136 products

Fabricating and Machining

Scissors

Cut through a wide range of materials from paper and plastic to carpet and Kevlar

28 products

End Cutters

Wide jaws cut steel wire, nails, and small rivets close to the surface; also known as nippers

22 products

Wire Cutters

Snip through various types of wire, even hardened and steel-reinforced wire

154 products

Cable Tie Cutters

Safety guards on the tip help you sever cable ties without damaging bundled material

1 product

Locking Pliers

Clamp workpieces and lock them in place to keep your hands free

51 products

Benders

Bend wire, rod, and flat stock into hooks, brackets, and pipe hangers or more complex shapes

2 products

Tube Straighteners

Pull coiled tubing through roller wheels to make it smooth and level

1 product

Tube Benders

Bend hard and soft metal tubing with various outer diameters

48 products

Wire-Gripping Pliers

Pull, bend, and cut wire; also known as lineman's pliers

28 products

Long-Nose Pliers

Grab, bend, and position wire and other small parts

45 products

Pliers Sets

A variety of pliers styles and sizes for whatever job comes up

4 products

Slip-Joint Pliers

Adjust the pivot point to switch between two different jaw opening sizes

4 products

Adjustable Pliers

A range of jaw positions for turning fasteners and gripping workpieces

9 products

Wire-Forming Pliers

Loop and bend wire; also known as round-nose pliers

16 products

Conduit Benders

Bend conduit by hand, by foot, with heat, or with a hydraulic pump

11 products

Abrasive Blaster Safety Switches

Shut off abrasive blasters if the operator loses control; also known as deadman switches

3 products

Electrical Contact Files

File down contacts on electrical components such as spark plugs and switches for clean connections

7 products

Gas Fitting Pliers

Perfect for adjusting burners and gas pipe fittings of various sizes

4 products

Building and Machinery Hardware

Strut Channel Framing and Fittings

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

6 products

Grommets

Protect wire, cable, and cords from holes with sharp or rough edges

44 products

Lockouts

Ensure that machines stay turned off to prevent accidents during maintenance work

71 products

Tool Support Arms

Suspend tools to keep them out of the way but still within reach

5 products

Garage Door Openers

Automatically open and close overhead doors; also known as jackshafts

2 products

Indicating Knobs

Control devices and view settings at a glance

2 products

Measuring and Inspecting

Test Lead Tips

Adapt Fluke test leads to perform electrical tests in tight spaces

1 product

Test Lead Clips

For hands-free testing, create a temporary yet secure electrical connection

77 products

Test Leads

Pair with electrical testers such as multimeters to analyze your devices

6 products

Electronic-Component Testers

Test, identify, and troubleshoot components such as circuit boards and diodes

3 products

Wire, Rope, and Cord Length Measurers

Combine counters and reels to measure and wind wire, rope, cord, cable, or hose

11 products

Vibration Monitors

Mount to your machine to continuously monitor vibration and ensure it stays within the proper range

9 products

Coordinate Measurement Machine Probes

Take 3D measurements of workpieces on your CMM or CNC machine to inspect for quality

9 products

Facility and Grounds Maintenance

Battery Terminal Brushes

Scrub dirt and corrosion off battery terminals

2 products

Fluid Handling

Level Sensor Switches

Activate equipment by detecting the liquid level in a tank

17 products

Directional Control Valves

Manage the flow of fluids to move equipment in air- and hydraulic-powered systems

19 products

Thermocouple Cords

Extend the reach of thermocouple probes

16 products

Differential Pressure Switches

Activate controls and alarms when the pressure difference between process lines exceeds a setpoint

16 products

Material Handling

Cable Rollers

Move bulky cable and hose, even over edges, while keeping it off the ground

1 product

Cable Holders

Mount to a surface to secure and route cable

25 products

Hook and Loop Straps

Pull apart and secure again and again as the size of your bundle changes

78 products

Cable Tie Cushions

Cover the edges of metal cable ties to keep them from digging into bundles of cable

9 products

Cable Tie Mounts

Attach to walls, machines, and other surfaces and add a cable tie to organize and secure bundles

14 products

Cable Ties

Bundle and secure cable, wire, and hose; also known as zip ties

162 products

Cable Tie Tensioners

Tighten cable ties and trim the excess

2 products

Cable Bundling Tools

Quickly organize wires, cables, and cords into bundles

1 product

Puller Hooks

Pull crates, bales, and other objects or lift off covers

4 products

Tool Balancers

Minimize user fatigue by suspending tools to offset their weight

38 products

Cable Pulling Clamps

Maintain tension until a line can be permanently anchored

11 products

Bungee Cord Hooks

Add to bungee cords to hook them onto rings and loops

21 products

Bungee Cords

Stretch around loads to secure them

91 products

Cable and Hose Trolleys

Move cable and hose along wire rope, channel, or beams; also known as festoon trolleys

47 products

Fastening and Joining

Snap-In Nuts

Push into square holes in thin materials to add bolts for aligning off-center parts

1 product

Hook and Loop

Press interlocking pieces together to join materials

2 products

Welding Pliers

Perform a variety of welding tasks such as spatter removal and wire cutting

2 products

Heating, Ventilation, and Air Conditioning

HVAC Flame Detectors

Replace flame detectors in HVAC equipment such as furnaces, ovens, water heaters, and boilers

1 product

Communication

Speaker Volume Controls

Wire between your speakers and sound amplifier to adjust the volume

4 products

Tag Ties

Wrap through tag holes to connect to items such as lanyards and key rings

6 products

Tamper-Evident Seals

Secure hasps, latches, and other connections to visibly indicate tampering

64 products

Wire Markers

Label individual wires in circuits, junction boxes, and other complex wiring systems

7 products

Wire Marker Installation Tools

Install wire markers

1 product

Tamper-Evident Seal Presses

Squeeze the handles to seal locks on wire tamper-evident seals

4 products

Containers, Storage, and Furniture

Test Lead Holders

Keep test leads organized and within reach

3 products

Recycling Containers

Dispose of recyclables like paper and cans as well as batteries and light bulbs

6 products

Lighting

Light Dimmers

Adjust the brightness of lights, even in large workspaces

2 products

Light Switches

Manually turn lights on and off

3 products

Light Switch Sensor Guards

Protect light switch sensors from damage and vandalism

5 products

Safety Equipment

Hot Sticks

Operate high-voltage switches from a safe distance

17 products

Hot Stick Heads

Swap out the head on your hot stick to operate switches, pull cotter pins, and more

3 products