Limit Bumper Switches | McMaster-Carr

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184 Products

Choosing an Electrical Switch

Bumper Switches

Sensitive along their entire length, these switches are often used to signal when an overhead door closes or an item reaches the end of a conveyor.

Safety Bumper Switches

Prevent automatic doors from closing on a person or an object—these switches immediately turn machinery off when actuated with minimal force.

High-Force Safety Bumper Switches

Minimize false triggers—these switches require 10 lbs. of actuation force in order to shut off machinery immediately.

Wear-Resistant Bumper Switches

Made of polycarbonate, these switches won't wear down even as objects constantly bump into them, unlike rubber bumper switches.

Limit Switches

When a moving object contacts the actuator on these switches, they open or close a circuit. They have the rapid-closing action of a snap-acting switch, but with a larger actuator for large objects.

Panel-Mount Light-Touch Limit Switches

Our most sensitive limit switches, these switches actuate with the slightest push for a high degree of accuracy.

Panel-Mount Sealed Wet-Location Limit Switches

Sealed actuators prevent these switches from jamming, even when exposed to oil, sand, mud, or ice.

Heavy Duty Limit Switches

Rugged enough for mining operations, these limit switches require a high actuation force, like heavy rocks moving on a conveyor.

Rotary Limit Switches

Start or stop equipment after a set number of rotations to avoid over-rotation.

Build-Your-Own Limit Switches

Combine an actuator and a switch to assemble the exact limit switch you need.

Wireless Self-Powered Limit Switches

Install these limit switches where changing a battery or routing wires might be difficult—they power themselves when a moving object contacts the actuator.

Compact Safety Limit Switches

Shorter and thinner than other safety limit switches, these are sized to fit tight spaces.

Safety Limit Switches

Protect machinery and ensure the safety of personnel—these switches will open the circuit when actuated even if a spring fails or the contacts stick.

Manual-Reset Safety Limit Switches

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

Panel-Mount Low-Profile Limit Switches

Secure these switches into panel cutouts using mounting nuts. They have a slim body so they can also be stacked together or fit into tight spaces.

Sealed Low-Profile Limit Switches

A sealed actuator prevents these switches from jamming, even when exposed to sand, mud, or dirt. With a slim design, you can stack them together or fit them in tight spaces.

Low-Profile Limit Switches

Stack these slim switches together, or fit them into tight spaces. They're rated IP67 for protection from temporary submersion.

Washdown Limit Switches

Rated NEMA 3S and IP69K, these switches can handle washdowns with high pressures and temperatures. They’re also protected from oil/coolant spraying, precipitation, and temporary submersion.

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.