Surface Mount Switches | McMaster-Carr

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769 Products

Electrical Power, Networking, and Controlling

Snap-Acting Switches

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

144 products

Push-Button Switches

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

13 products

Limit Switches

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

3 products

Ethernet Switches

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

27 products

Finger-Touch Switches

Lightly touch with your finger to turn circuits on and off

1 product

Emergency Stop Switches

Cut power to equipment during emergencies

6 products

Magnetic Switches

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

2 products

Relays

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

211 products

Motor Starters

Turn motors on and off and protect them from current overloads

5 products

Motor Voltage Monitors

Protect electric motors by cutting power when faults occur

1 product

Proportional-Control Relays

Gradually adjust output instead of turning on or off

12 products

Lighting Relays

Control lighting circuits and switch lighting systems on or off

13 products

Infrequent-Cycle Relays

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

128 products

Vehicle Relays

Switch high-current loads on vehicles, such as starters, headlights, and fuel pumps

18 products

Safety Relays

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

18 products

Timer Relays

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

90 products

Monitoring Relays

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

4 products

Data Connection Hubs

Add USB, DisplayPort, or HDMI ports to your computer to connect multiple device

7 products

Battery Chargers

Charge everything from large-cell to cordless tool to household batteries

3 products

Building and Machinery Hardware

Brackets

Connect surfaces in an assembly

4 products