2.5A Switches | McMaster-Carr

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427 Products

Choosing an Electrical Switch

Metal 22 mm Panel-Mount Push-Button Switches

Simple to use, these switches actuate with a quick push.

Plastic 22 mm Panel-Mount Push-Button Switches

A quick push is all it takes to actuate these switches.

Plastic 22 mm Emergency Stop
Panel-Mount Push-Button Switches

Metal 22 mm Emergency Stop
Panel-Mount Push-Button Switches

Metal 30 mm Panel-Mount Push-Button Switches

Push the button to actuate these switches. Colored actuators help you tell switches apart without reading labels.

Metal 30 mm Panel-Mount Push-Button
Switches with Changeable Covers

Change the cover on these switches without replacing them entirely—they come with seven snap-on covers in different colors. The colors help you quickly identify switches without labels.

Plastic 30 mm Panel-Mount Push-Button Switches

Actuate these switches with the push of a button. Their buttons are distinct colors to help you quickly spot switches without labels.

Flush-Mount 30 mm Panel-Mount
Push-Button Switches

The face of these switches mounts flush against a panel, so they're easy to clean and hard to damage.

Hazardous Location 30 mm Multifunction
Panel-Mount Push-Button Switches

Rated NEC Classes I, II, and III, these switches have a housing that keeps fire and sparks in, so they won’t ignite gases, vapors, or dust. To save space on your panel, they can control multiple circuits.

30 mm Emergency Stop
Panel-Mount Push-Button Switches

Immediately cut power with a single push.

16 mm Emergency Stop
Panel-Mount Push-Button Switches

Immediately cut power with a single push.

Plastic Enclosed Push-Button Switches

A protective plastic enclosure resists dents, chips, and cracks, so you can install these switches outside of panels.

Plastic Emergency Stop
Enclosed Push-Button Switches

Made of yellow polycarbonate plastic, these enclosed switches are easy to see and resist dents, chips, and cracks. They are more corrosion resistant than aluminum enclosed switches and withstand washdowns and oil/coolant spraying.

Aluminum Emergency Stop
Enclosed Push-Button Switches

These aluminum switches are rated NEMA 4, NEMA 13, and IP66 for protection from washdowns and oil/coolant spraying.

Plastic 22 mm Panel-Mount Lever Switches

These switches are protected from corrosion, high-temperature and high-pressure washdowns, and oil/coolant spraying. Install them in 22 mm dia. cutouts.

Metal 22 mm Panel-Mount Lever Switches

Grip and twist a lever to turn these switches on or off—they’re designed to prevent accidental actuation. Install them into standard-sized panel cutouts.

Metal 30 mm Panel-Mount Lever Switches

Rated NEMA 4, 13, and IP66, these metal switches are protected from washdowns and oil/coolant spraying. Install them in 30 mm dia. cutouts.

Plastic 30 mm Panel-Mount Lever Switches

Prevent accidental actuation from bumps or jostles—these switches require you grip and twist a lever to turn them on or off. Install them in 30 mm dia. cutouts.

16 mm Panel-Mount Lever Switches

Avoid accidental actuation—these switches won’t turn on or off until you grip and twist the lever. Install in a 16 mm dia. cutout.

Plastic Enclosed Lever Switches

The enclosure not only protects these switches, but also adds options for how you install them.

Contact Blocks for Manual Switches

Make or break an electrical circuit. These contact blocks mount to manual switches and transmit an electrical signal when the switch actuator is engaged.

22 mm Panel-Mount
Build-Your-Own Plastic Switches

Choose an actuator and contact block to make your own 22 mm plastic switch.

22 mm Panel-Mount Build-Your-Own Metal Switches

Choose an actuator and contact block to make your own 22 mm metal switch.

16 mm Panel-Mount
Build-Your-Own Plastic Switches

Choose an actuator and contact block to make your own 16 mm switch.

Foot Switches

Keep your hands free for other tasks by triggering switches with your foot.

Rotary Switches

Control multiple devices with one switch. Turn the shaft to change switch positions.

22 mm Panel-Mount Key Switches

Sized for 22 mm dia. panel cutouts, these switches require a key to turn circuits on or off, limiting access to sensitive equipment.

30 mm Panel-Mount Key Switches

Install these key switches in 30 mm dia. panel cutouts. They require a key to turn circuits on or off, limiting access to sensitive equipment.

16 mm Panel-Mount Key Switches

These 16 mm switches require a key to turn circuits on or off, limiting access to sensitive equipment.

Limit Switches

Manual-Reset Safety Limit Switches

Prevent equipment from automatically restarting—these switches must be manually reset each time they're actuated.

Hazardous Location Limit Switches

Safely open or close a circuit near ignitable gases and dust—the housing on these switches seals in anything that could ignite flammable material.

Frame-Mounted Safety Switches

Also known as interlock switches, these ensure the safety of personnel by automatically shutting off power to machinery when an access door opens. They’re often used with machine guards.

Access-Delay Frame-Mounted Safety Switches

Delay access to hazardous areas until conditions are safe; use these switches with machines that take time to stop after they are turned off. They mount to a door frame.

Noncontact Switches

Magnetically Actuated Switches

These switches actuate when a magnet comes within sensing distance, and reset when the magnet moves away.

Tilt Switches

Often used as position indicators, pump level controls, and machine limit switches, these switches actuate when tilted to a certain angle.

Relays

Solid State Screw Terminal Relays

With no moving parts, these solid-state relays are fast switching and require less maintenance, last longer, and are quieter than mechanical switches.

Safety Relays with Diagnostic Capabilities

Control and diagnose issues with safety-critical circuits.