Wire Lead Switches | McMaster-Carr

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1,207 Products

Electrical Power, Networking, and Controlling

Toggle Switches

Flip the toggle from one position to the other, turning circuits on and off

13 products

Rocker Switches

Press the wide, flat surface to easily turn circuits on and off

24 products

Snap-Acting Switches

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

30 products

Push-Button Switches

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

9 products

Limit Switches

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

39 products

Pendant Switches

Control machinery, such as cranes, hoists, and trolleys, from a safe distance

11 products

Magnetic Switches

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

92 products

Sensor Switches

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

295 products

Foot Switches

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

21 products

Pull-Chain Switches

Pull a chain to send a signal, such as for turning on and off lights and fans

1 product

Switch Mats

Step on a mat to actuate circuits, often to control doors, lights, and alarms

34 products

Enclosure Door Switches

Control fans, lights, and other devices inside your enclosure when you open and close the door

2 products

Tilt Switches

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

6 products

Key Switches

Turn a key to actuate circuits, preventing accidental start and limiting access

12 products

Finger-Touch Switches

Lightly touch with your finger to turn circuits on and off

3 products

Timer Switches

Automatically turn electrical equipment on or off after a set interval

16 products

Safety Switches

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

2 products

Bumper Switches

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

31 products

Touch-Pad Switches

Lay flat or mount on a wall to alert you when doors open or objects are removed

2 products

Fingerprint Scanners

Use fingerprints to confirm the identity of personnel before granting access to areas or equipment

1 product

Ribbon Switches

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

12 products

Switch Receivers

Pair with switches to set up wireless controls that cut power to machinery in case of emergency

5 products

Emergency Stop Switches

Cut power to equipment during emergencies

2 products

Sensor Switch Transmitters

Monitor objects, switch equipment on and off, and send data to control systems with a single device

3 products

Speed-Monitoring Switches

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

2 products

Relays

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

19 products

Potentiometers

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

6 products

Fluid Handling

Pressure Switches

Activate controls, set off alarms, and power equipment when a set pressure is reached

92 products

Differential Pressure Switches

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

6 products

Vacuum Switches

Activate controls, set off alarms, and power equipment when a set vacuum is reached

6 products

Pressure and Vacuum Switches

Activate controls, set off alarms, and power equipment when a set pressure or vacuum is reached

3 products

Flow Switches

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

93 products

Directional Control Valves

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

50 products

Humidity Controllers

Monitor humidity and control it by automatically turning equipment on and off

1 product

Temperature Switches

Turn heating equipment on or off at a specified temperature

42 products

Temperature Controllers

Precisely regulate process temperatures; more accurate than temperature switches

2 products

Flow Transmitters

Send flow rate measurements to PLCs, data loggers, and remote displays

39 products

Pressure and Vacuum Transmitters

Convert pressure and vacuum measurements into a signal sent to remote displays and controllers

5 products

Lighting

Light Switch Sensors

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

54 products

Light Dimmers

Adjust the brightness of lights, even in large workspaces

13 products

Light Switches

Manually turn lights on and off

8 products

Light Switch Sensor Controllers

Turn lights on and off or dim them in unison from a secure Bluetooth network

5 products

Light Sockets

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

7 products

Fabricating and Machining

Abrasive Blaster Safety Switches

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

4 products

Heating, Ventilation, and Air Conditioning

Thermostats

Connect to heaters, fans, and air conditioners to control the temperature

3 products