C-UL Listed Switches | McMaster-Carr

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1,810 Products

Electrical

Manual Switches

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

228 products

Manual Switch Contact Blocks

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

17 products

Limit Switches

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

50 products

Disconnect Switches

Make sure equipment stays turned off during inspection and maintenance

120 products

Sensor Switches

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

331 products

Motor Switches

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

18 products

Safety Switches

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

20 products

Timer Switches

Automatically turn electrical equipment on or off after a set interval

33 products

Relays

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

239 products

Ethernet Switches

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

14 products

Light Switches

Manually turn lights on and off

26 products

Speed-Monitoring Switches

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

1 product

Potentiometers

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

3 products

Motor Starters

Turn motors on and off and protect them from current overloads

45 products

Magnetic Switches

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

19 products

Vibration Switches

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

4 products

Light Switch Sensors

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

39 products

Programmable Logic Controllers

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

6 products

Programmable Logic Controller Expansion Modules

Increase the number of inputs and outputs for your PLC

2 products

Motor Speed Controls

Manage the speed of AC and DC motors

36 products

Motor Voltage Monitors

Protect electric motors by cutting power when faults occur

1 product

Timer Relays

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

11 products

Light Curtains

Immediately cut power to machinery when anything blocks the light beam

18 products

Sensor Switch Transmitters

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

8 products

Light Switch/Receptacles

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

2 products

Electrical Cords

Connect equipment and devices to a power supply

2 products

Console Enclosures

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

3 products

Fluid Handling

Pressure Switches

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

60 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

61 products

Temperature Switches

Turn heating equipment on or off at a specified temperature

24 products

Level Sensor Switches

Activate equipment by detecting the liquid level in a tank

7 products

Paddle Level Switches

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

6 products

Flow Switches

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

11 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

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

3 products

Communication

RFID Reader/Writers

Scan RFID tags and cards to track inventory or grant building access

2 products