Limit Switches | McMaster-Carr

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System of Measurement

Switching Voltage

Environment

High-Pressure Washdown

High-Temperature Washdown

Switching Current

Number of Terminals

Electrical Connection Type

Wire Connection

Switch Starting Position

Switch Designation

Switch Action

Actuator Height

Housing Material

Enclosure Rating

Number of Circuits Controlled

Housing Height

Actuation Force

Electrical Connection

1/2" Circular Connector

Number of Mounting Holes

Housing Length

Mounting Location

Printed Circuit Board

RoHS

Compliant with Exemptions

Not Compliant

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Export Control Classification Number (ECCN)

2B999

EAR99

DFARS Specialty Metals

REACH

1,034 Products

Electrical Power, Networking, and Controlling

Limit Switches

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

153 products

Snap-Acting Switches

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

209 products

Proximity Sensors

Detect the presence or position of objects from a short sensing distance

377 products

Tilt Switches

Trip circuits when tilted; use as position indicators, pump level controls, and limit switches

8 products

Safety Switches

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

59 products

Magnetic Switches

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

2 products

Speed-Monitoring Switches

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

3 products

Photoelectric Sensors

Detect objects from longer distances than proximity and ultrasonic sensors

1 product

Air-Actuated Switches

Press with your hand or foot to turn circuits on and off with air pressure

13 products

Ultrasonic Sensors

Measure the distance to objects and the level of liquids and materials

21 products

Switch Mounts

Mount switches to panel cutouts, tank walls, or conveyors

5 products

Air-Actuated Relays

Convert an air signal on a pneumatic control system to an electric one

1 product

Fluid Handling

Directional Control Valves

Manage the flow of fluids to move equipment in air- and hydraulic-powered systems

175 products

Heating, Ventilation, and Air Conditioning

Thermostats

Connect to heaters, fans, and air conditioners to control the temperature

7 products