3A Switches | McMaster-Carr

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	Actuator Style Actuator Style

	Push Button
	Toggle
	Rocker
	Lever
	Plunger
	Roller Lever
	Rotary
	Key
	Roller Plunger
	Foot Pedal
	Cable Pull

	Switching Voltage Switching Voltage

	Switch Action Switch Action

Stays Switched
(Maintained)

Springs Back (Momentary)

	System of Measurement System of Measurement

Inch

	Switching Current Switching Current	Show

	Switching Current Switching Current	Hide

	Wire Connection Type Wire Connection Type

Butt Splices

Quick-Disconnect Terminals

Screw Terminals

Snap On

Solder

Solder Turret Terminals

Wire Leads

	Switch Starting Position Switch Starting Position

1 Off (Normally Open)

1 Off (Normally Open) and
1 On (Normally Closed)

1 Off (Normally Open) and
2 On (Normally Closed)

1 Off (Normally Open) or 1
On (Normally Closed)

1 On (Normally Closed)

2 Off (Normally Open)

2 Off (Normally Open) and
1 On (Normally Closed)

2 Off (Normally Open) and
2 On (Normally Closed)

2 Off (Normally Open) or 2
On (Normally Closed)

2 On (Normally Closed)

3 Off (Normally Open)

4 Off (Normally Open) or 4
On (Normally Closed)

	Number of Terminals Number of Terminals

	Switch Type Switch Type

	Number of Circuits Controlled Number of Circuits Controlled

	Maximum Voltage Maximum Voltage

	For Panel Cutout Diameter For Panel Cutout Diameter

	Environment Environment

Corrosive

Damp

Dusty

High-
Pressure
Washdown

	Mounting Location Mounting Location

	Push-Button Style Push-Button Style


Flush	Projecting

Mushroom

	Industry Designation Industry Designation

	Number of Positions Number of Positions

	Push-Button Shape Push-Button Shape

Round

Rectangular

	Illumination Illumination

Not Illuminated

Illuminated

	Position Designation Position Designation

	Actuator Color Actuator Color

	Black		Red
	Green		White
	Gold

	Wire Lead Color Wire Lead Color

	Black
	Red
	Blue
	White
	Brown
	Green
	Black/White
	Orange
	Gray
	Violet

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

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122 Products

Choosing an Electrical Switch

DIN-Rail Mount Miniature Toggle Switches

Built into a terminal block, these switches mount to DIN rail.

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

A single-piece construction prevents the contact block from separating from the actuator in high-vibration applications.

Miniature Panel-Mount Push-Button Switches

Sized for 4 mm or 6 mm panel cutouts, these switches are often used with circuit boards to control electronics.

16 mm Panel-Mount Push-Button Switches

Install in 16 mm dia. cutouts.

Low-Voltage 16 mm Panel-Mount Push-Button Switches

Operate low-voltage devices that require less than 48 volts, such as doorbells and buzzers.

Plastic Enclosed Push-Button Switches

Rated NEMA 4X and 13, all switches resist corrosion and can withstand washdowns and oil/coolant spraying.

Doorbell-Style Push-Button Switches

These familiar push-button switches mount to flat surfaces.

Rocker Switches

Easy-Grip Pendant Switches

With a slim shape, these switches fit comfortably in your hand.

Rotary Switches

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

Overhead Rope-Pull Switches

Pull the hanging rope in any direction to actuate these switches.

Cable-Pull Switches

Connect these switches to a cable to control circuits from a distance. They're typically used to turn off production lines and material handling systems. Equipment will not start up again until switch is manually reset.

Outlet-Box-Mount Key Switches

Reset fire panels, or open electromagnetic locks, electric strikes, and automatic door openers. These switches require a key to turn circuits on or off, limiting access and preventing accidental activation.

Foot Switches

Press these switches with your foot for convenient, hands-free operation.

Washdown Any-Direction Foot Switches

Rated NEMA 6P and IP68, these switches are protected against washdowns, corrosion, and temporary submersion.

Wet-Location Foot Switches

Safe for use in wet locations, these switches are IP and NEMA rated for protection from corrosion, washdowns, and oil/coolant spraying.

Light Duty Foot Switches

Use this switch for intermittent, light-duty applications.

22 mm Panel-Mount Knob Switches

Turn these switches by hand.

Subminiature Wet-Location Snap-Acting Switches

Small enough to fit in the tiniest spaces, these switches are rated IP67 for protection from temporary submersion.

Low-Profile Wet-Location Limit Switches

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

Sealed Wet-Location Limit Switches

Sealed actuators prevent these switches from jamming, even when exposed to sand, mud, or dirt. They're rated IP67 for protection from temporary submersion.

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.

Rotary Thumb Light Switches

Install these switches inline on a lamp cord.

Photoelectric Switches with Relay Output

A built-in relay produces AC voltage output. These switches are often used with older programmable logic controllers (PLCs).

Time-Delay Photoelectric Switches with Relay Output

Set these switches to delay activation by up to five seconds after detecting an object.

Magnetically Actuated Switches

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

Relays

Long-Life Circular-Pin Relays

With no moving parts, these solid state relays have an extended service life.

Ultra-Thin Signal Relays

Maximize space inside your control cabinet—these relays are extra narrow.

Multifunction Timer Relays

Versa-Mount Multifunction Timer Relays

Install relays in a panel cutout or plug into a relay socket.

Compact Socket-Mount Multifunction Timer Relays

Smaller than standard multifunction timer relays, these relays save space in your control cabinet.