Wire Lead Switches | McMaster-Carr

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1,186 Products

Electrical

Manual Switches

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

147 products

Snap-Acting Switches

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

29 products

Limit Switches

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

39 products

Sensor Switches

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

296 products

Magnetic Switches

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

66 products

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

8 products

Tilt Switches

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

6 products

Light Switches

Manually turn lights on and off

8 products

Bumper Switches

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

23 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

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

Light Curtain Cords

Connect multiple light curtains in a row

2 products

Switch Receivers

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

4 products

Sensor Switch Transmitters

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

2 products

Fluid Handling

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

Pressure Switches

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

83 products

Vacuum Switches

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

5 products

Pressure and Vacuum Switches

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

3 products

Differential Pressure Switches

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

6 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

On-Off Valves

Start and stop flow through a line

1 product

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

4 products

Fabricating and Machining

Abrasive Blaster Safety Switches

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

2 products

Lighting

Light Sockets

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

2 products

Heating, Ventilation, and Air Conditioning

Thermostats

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

1 product