30V DC Switches | McMaster-Carr

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261 Products

Electrical Power, Networking, and Controlling

Toggle Switches

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

31 products

Rocker Switches

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

34 products

Push-Button Switches

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

7 products

Snap-Acting Switches

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

23 products

Rotary Switches

Control multiple devices with a single switch

3 products

Limit Switches

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

11 products

Foot Switches

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

2 products

Doorbell Switches

Activate doorbells or buzzers with the push of a button

11 products

Magnetic Switches

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

26 products

Emergency Stop Switches

Cut power to equipment during emergencies

8 products

Pendant Switches

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

6 products

Enabling Switches

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

5 products

Photoelectric Sensors

Detect objects from longer distances than proximity and ultrasonic sensors

13 products

Relays

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

18 products

Interface Relays

Isolate input and output circuits to protect PLCs and other controllers

3 products

Monitoring Relays

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

6 products

Safety Relays

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

20 products

Fluid Handling

Flow Transmitters

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

11 products

Pressure and Vacuum Transmitters

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

18 products