C-UL Listed Switches | McMaster-Carr

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Electrical Receptacle

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1/2" Circular Connector

Flat-Pin Mini Thermocouple Connector

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Compliant with Exemptions

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

REACH

Compliant

Not Compliant

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

2,024 Products

Electrical Power, Networking, and Controlling

Lever Switches

Grip and twist the lever to turn circuits on and off, preventing accidental actuation

83 products

Switch Contact Blocks

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

16 products

Limit Switches

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

51 products

Snap-Acting Switches

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

26 products

Disconnect Switches

Make sure equipment stays turned off during inspection and maintenance

150 products

Foot Switches

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

33 products

Push-Button Switches

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

60 products

Motor Switches

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

18 products

Proximity Sensors

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

253 products

Timer Switches

Automatically turn electrical equipment on or off after a set interval

38 products

Safety Switches

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

37 products

Magnetic Switches

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

60 products

Finger-Touch Switches

Lightly touch with your finger to turn circuits on and off

26 products

Ethernet Switches

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

42 products

Key Switches

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

13 products

Emergency Stop Switches

Cut power to equipment during emergencies

31 products

Photoelectric Sensors

Detect objects from longer distances than proximity and ultrasonic sensors

83 products

Speed-Monitoring Switches

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

1 product

Vibration Switches

Monitor vibration in machinery and shut it down or sound an alarm if levels rise

10 products

Enabling Switches

Equipment only runs while you press the switch; also known as deadman switches

9 products

Air-Actuated Switches

Press with your hand or foot to turn circuits on and off with air pressure

4 products

Pendant Switches

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

30 products

Pull Switches

Tug on a cable or rope to turn on and off circuits, often for production lines along conveyors

1 product

Ultrasonic Sensors

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

21 products

Proximity Sensor Safety Barriers

Safely send power to sensors in volatile areas such as refineries and power plants

1 product

Automatic Door Switches

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

2 products

Cylinder Position Sensors

Monitor your air cylinder rod's position and turn the cylinder on and off

8 products

Safety Light Curtains

Immediately cut power to machinery when anything blocks the light beam

60 products

Motor Starters

Turn motors on and off and protect them from current overloads

52 products

Potentiometers

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

3 products

PLCs

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

54 products

DC Motor Drives

Control the speed and torque of DC electric motors

9 products

Motor Voltage Monitors

Protect electric motors by cutting power when faults occur

1 product

VFDs

Control the speed and torque of AC electric motors

28 products

HMIs

Control PLCs, inverters, and other automated equipment

20 products

Relays

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

172 products

Timer Relays

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

11 products

Proportional-Control Relays

Gradually adjust output instead of turning on or off

12 products

Safety Relays

Monitor circuits and force machines to a safe stop if the relay detects a fault

26 products

Monitoring Relays

Trip circuits or sound an alarm when voltage, current, or other limits are exceeded

12 products

Infrequent-Cycle Relays

Use with equipment that cycles on and off, such as HVAC systems

57 products

Interface Relays

Isolate input and output circuits to protect PLCs and other controllers

3 products

Power Cords

Connect equipment and devices to a power source

2 products

Console Enclosures

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

9 products

Lighting

Light Switch/Receptacles

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

3 products

Light Switches

Manually turn lights on and off

31 products

Light Switch Sensors

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

39 products

Light Switch Sensor Controllers

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

7 products

Light Dimmers

Adjust the brightness of lights, even in large workspaces

2 products

Light Sockets

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

8 products

Fluid Handling

Pressure Switches

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

62 products

Differential Pressure Switches

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

16 products

Pressure and Vacuum Switches

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

3 products

Temperature Controllers

Precisely regulate process temperatures; more accurate than temperature switches

64 products

Level Sensor Switches

Activate equipment by detecting the liquid level in a tank

8 products

Paddle Level Switches

Actuate when the paddle stops rotating to indicate the level of dry material

6 products

Temperature Switches

Turn heating equipment on or off at a specified temperature

26 products

Flow Switches

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

17 products

Flow Transmitters

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

23 products

Pressure and Vacuum Transmitters

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

18 products

Heating, Ventilation, and Air Conditioning

HVAC Switches

Control and monitor airflow in HVAC systems automatically

1 product

Thermostats

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

3 products

Safety Equipment

Smoke Detector Test Stations

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

1 product

Smoke Detectors

Warn people when there's smoke in your facility

6 products

Communication

RFID Readers

Read RFID cards when prototyping systems or scan RFID tags to control circuits

8 products