Electrical Switches | McMaster-Carr

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6,659 Products

Electrical

Manual Switches

Manual Switches

Everything from toggle, push-button, and rocker switches to foot switches

Manual Switch Contact Blocks

Manual Switch Contact Blocks

Mount to switches to control electrical circuits as you move the switch

Light Switches

Manually turn lights on and off

Disconnect Switches

Disconnect Switches

Make sure equipment stays turned off during inspection and maintenance

Snap-Acting Switches

Snap-Acting Switches

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

Motor Switches

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

Light Dimmers

Adjust the brightness of lights, even in large workspaces

Limit Switches

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

Switch Guards

Prevent people from activating switches accidentally

Safety Switches

Safety Switches

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

Timer Switches

Automatically turn electrical equipment on or off after a set interval

Relays

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

Programmable Logic Controllers

Programmable Logic Controllers

Program complex automation jobs by combining the functionality of a relay, timer relay, and switch

Programmable Logic Controller Expansion Modules

Programmable Logic Controller Expansion Modules

Increase the number of inputs and outputs for your PLC

Timer Relays

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

Magnetic Switches

Magnetic Switches

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

Potentiometers

Control speed, volume, and light intensity by varying electrical flow; also known as rheostats

Bumper Switches

Bumper Switches

Signal when overhead doors close or items reach the end of conveyors

Sensor Switches

Sensor Switches

Detect moving objects from a distance, triggering a circuit to open or close

Motor Starters

Turn motors on and off and protect them from current overloads

Photoelectric Switch Reflectors

Photoelectric Switch Reflectors

Pair with sensor switches to reflect light back at them

Motor Starter Overload Protectors

Motor Starter Overload Protectors

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

Light Curtains

Immediately cut power to machinery when anything blocks the light beam

Control Panels

Connect and monitor your fire alarm system

Speed-Monitoring Switches

Speed-Monitoring Switches

Avoid downtime and machinery damage by detecting slowdowns in drive trains and conveyors

Transfer Switches

Transfer Switches

Switch to backup power during an outage

Transistors

Boost weak electrical signals and rapidly control data transmission

IO Link Programmers

IO Link Programmers

Configure your IO Link devices without a PC, outlet, or separate software

Light Switch Sensors

Light Switch Sensors

Automatically turn lights on and off when you enter and exit rooms

Switch Mounts

Mount sensor switches to panel cutouts, tank walls, or conveyors

Motor Speed Controls

Motor Speed Controls

Manage the speed of AC and DC motors

Tilt Switches

Trip circuits when tilted; use as position indicators, pump level controls, and limit switches

Fusible Link Switches

Fusible Link Switches

Use as a safety switch to shut off hydraulic equipment and other machinery when the link melts

Ethernet Switches

Ethernet Switches

Expand your data network by connecting computers, printers, and servers

IO Link Connectors

IO Link Connectors

Remotely view measurements, adjust settings, and identify errors in sensors and actuators

Motor Voltage Monitors

Motor Voltage Monitors

Protect electric motors by cutting power when faults occur

Circuit Breakers

Circuit Breakers

Reusable way to interrupt circuits when they overload or short

Light Switch/Receptacles

Light Switch/Receptacles

Combine a switch and receptacle into a single outlet box for a small footprint

Outlet Boxes

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

Electrical Receptacles

Electrical Receptacles

Install in a wall or panel to transmit power or data to plugs or sockets

Electrical Cords

Electrical Cords

Connect equipment and devices to a power supply

Safety Equipment

Smoke Detector Test Stations

Smoke Detector Test Stations

Test hard-to-reach HVAC smoke detectors from a convenient location

Smoke Detectors

Smoke Detectors

Warn people when there's smoke in your facility

Fire Alarm Pull Stations

Fire Alarm Pull Stations

Activate to send a signal to your control panel if there's a fire

Building and Machinery Hardware

Indicating Knobs

Indicating Knobs

Control devices and view settings at a glance

Brackets

Connect surfaces in an assembly

Cam Latches

Secure drawers, cabinets, mailboxes, and other enclosures

Lighting

Light Sockets

Install or replace sockets in fixtures for standard household, tubular, compact, or miniature bulbs

Light Socket Pull Cords

Light Socket Pull Cords

Lengthen pull-chain light switches

Fabricating and Machining

Abrasive Blaster Safety Switches

Abrasive Blaster Safety Switches

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

Fluid Handling

Directional Control Valves

Directional Control Valves

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

Flow Switches

Turn equipment on or off when flow rate reaches a set point

On-Off Valves

Start and stop flow through a line

Level Sensor Switches

Level Sensor Switches

Activate equipment by detecting the liquid level in a tank

Noncontact Temperature Sensors

Noncontact Temperature Sensors

Monitor the temperature of hazardous, sensitive, and hard-to-reach materials without touching them

Measuring and Inspecting

Thermometer Cooling Jackets

Thermometer Cooling Jackets

Connect to a compressed air or water line to keep infrared thermometer transmitters from overheating

Thermometer Air Purges

Thermometer Air Purges

Blow dust and moisture off infrared thermometer transmitter lenses

Thermometer Insulating Tubes

Thermometer Insulating Tubes

Prevent infrared thermometer transmitters from overheating by shielding them from hot surfaces

Thermometer Covers

Thermometer Covers

Prevent dirt buildup on infrared thermometer transmitters

Signal Output Testers

Signal Output Testers

Check if the signal output of a DC switch is NPN or PNP to know how to wire components

Decade Boxes

Test and troubleshoot circuits without needing to solder capacitors or replace resistors

Heating, Ventilation, and Air Conditioning

HVAC Flame Detectors

HVAC Flame Detectors

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

Communication

Audible Alarms

Everything from bells and whistles to horns and sirens

Speaker Volume Controls

Speaker Volume Controls

Wire between your speakers and sound amplifier to adjust the volume

Material Handling

Tablet Holders

Equip tablets with safety switches to halt robots, conveyors, and other machinery in an instant

Robot Safety Padding

Robot Safety Padding

Trigger an emergency stop when robot arms contact a worker or object

Conveyor Accessory Mounts

Conveyor Accessory Mounts

Position guides or sensors to the exact spot needed for your conveyor

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