NEMA 4X Switches | McMaster-Carr

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	Actuator Style Actuator Style


Push Button	Lever

Rotary	Key

Finger Touch	Joystick

	Switch Action Switch Action

Stays Switched (Maintained)

Springs Back (Momentary)

	Switching Voltage Switching Voltage

	Actuator Color Actuator Color

	Black		Red
	Green		White
	Gray		Yellow
	Blue		Orange
	Amber

	System of Measurement System of Measurement

Inch

Metric

	For Panel Cutout Diameter For Panel Cutout Diameter

	Switch Starting Position Switch Starting Position

1 Off (Normally Open)

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

3 Off (Normally Open)

3 On (Normally Closed)

	Illumination Illumination

Not Illuminated

Illuminated

	Environment Environment

High-Pressure Washdown

	Number of Positions Number of Positions

	Push-Button Style Push-Button Style


Flush	Projecting

Mushroom

	Number of Circuits Controlled Number of Circuits Controlled

	Environmental Rating Environmental Rating	Show

NEMA 4X

	Environmental Rating Environmental Rating	Hide

Warning: Products have one, but not necessarily all, of the selected characteristics.

Associated Apparatus for
IEC Zone 0 Groups IIC,
IIB, IIA

Associated Apparatus for
IEC Zone 20 Groups IIIC,
IIIB, IIIA

IEC Zone 0 Groups IIC,
IIB, IIA

IEC Zone 1 Groups IIC,
IIB, IIA

IEC Zone 2 Groups IIC,
IIB, IIA

IEC Zone 20 Groups
IIIC, IIIB, IIIA

IEC Zone 21 Groups
IIIC, IIIB, IIIA

NEC Class I Division 1
Groups A, B, C, D

NEC Class I Division 1
Groups B, C, D

NEC Class I Division 2
Group D

NEC Class I Division 2
Groups A, B, C, D

NEC Class I Division 2
Groups B, C, D

NEC Class I Divisions
1, 2 Group D

NEC Class I Divisions
1, 2 Groups A, B, C, D

NEC Class I Divisions
1, 2 Groups B, C, D

NEC Class I Divisions
1, 2 Groups C, D

NEC Class II Division 1
Groups E, F ,G

NEC Class II Division 2
Groups F, G

NEC Class II Divisions
1, 2 Groups E, F, G

NEC Class II Divisions
1, 2 Groups F, G

NEC Class III
Divisions 1, 2

NEC Zone 1 Group IIA

NEC Zone 1 Groups
IIB, IIA

NEC Zone 1 Groups
IIC, IIB, IIA

NEC Zone 2 Groups
IIB, IIA

	Number of Terminals Number of Terminals

	Switching Current Switching Current

	Wire Connection Type Wire Connection Type


Screw Terminals	Screw-Clamp Terminals

Wire Leads

	Maximum Voltage Maximum Voltage

	Industry Designation Industry Designation

Triple Pole, Single Throw
(3PST)

	Actuator Base Material Actuator Base Material

Metal

Plastic

	Mounting Location Mounting Location

	Specifications Met Specifications Met

	Switch Type Switch Type

	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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663 Products

Choosing an Electrical Switch

Plastic 22 mm Panel-Mount Push-Button Switches

Space Saver 22 mm Panel-Mount Push-Button Switches

The built-in contact block in these switches extends behind the panel half the depth of most other 22 mm switches, saving valuable space.

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

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.

Metal 30 mm Panel-Mount Push-Button Switches

Plastic 30 mm Panel-Mount Push-Button Switches

Plastic Premium 30 mm
Panel-Mount Push-Button Switches

Able to handle tough, repetitive use, these switches are more durable than standard plastic switches.

Hazardous Location 30 mm
Panel-Mount Push-Button Switches

Use these switches where ignitable gas and dust may be present. Their contact blocks are UL listed for Class I, Division 2, Groups B, C, and D hazardous locations.

Hazardous Location 30 mm Emergency
Stop Panel-Mount Push-Button Switches

Use these switches where ignitable gas and dust may be present. Their contact blocks are UL listed for Class I, Division 2, Groups B, C, and D hazardous locations.

30 mm Multifunction Panel-Mount Push-Button Switches

Save space on a panel by using one switch to perform multiple switching functions.

Plastic Enclosed Push-Button Switches

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

Aluminum Enclosed Push-Button Switches

More lightweight than steel or stainless steel, these aluminum enclosed switches are rated NEMA 4X for protection from corrosion and washdowns.

Stainless Steel Enclosed Push-Button Switches

With a stainless steel enclosure, these switches are more durable than aluminum and plastic. They're rated NEMA 4X for protection from corrosion and washdowns.

Plastic Emergency Stop Enclosed Push-Button Switches

Rated NEMA 3S, NEMA 4X, NEMA 13, and IP66, these plastic switches resist corrosion better than aluminum switches and withstand 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.

Plastic 30 mm Panel-Mount Lever Switches

These plastic switches are rated NEMA 4X, 13, and IP65 for protection from corrosion, washdowns, and oil/coolant spraying. Install them in 30 mm dia. cutouts.

Plastic Enclosed Lever Switches

Rated NEMA 3S, 4X and 13, these switches are protected from corrosion, washdowns, and oil/coolant spraying.

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

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

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

Choose an actuator and contact block to make your own 30 mm switch.

Easy-Grip Pendant Switches

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

Corrosion-Resistant Washdown Pendant Switches

Control cranes and other mobile machinery in dirty, outdoor, and wet environments without damaging your switch.

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.

Light Beam Finger-Touch Switches

An infrared light beam senses the lightest finger contact to switch a circuit on or off.

22 mm Panel-Mount Knob Switches

Turn these switches by hand.

Joystick Switches

Grab these switches by hand and pivot them to use.

Noncontact Switches

Space-Saving Photoelectric Switches

With a narrow, flat body, these switches fit in tight spaces.

Magnetically Actuated Switches

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

Magnetic Contact Alarm Switches

Wire contacts to an alarm system to alert when doors or windows are opened.

Motor Control Switches

Washdown Enclosed Motor Switches

Rated NEMA 4X, these switches are protected from corrosion and washdowns.

Enclosed Motor Starters

The NEMA 4X rated enclosure protects these starters from corrosion and washdowns.

Compact Enclosed Motor Starters

Sized to fit in tight spaces, these starters have a shorter height and narrower depth than most other starters.

Enclosed Reversing Motor Starters

Rated NEMA 4X, these enclosed starters are protected from corrosion and washdowns.

Reversing Washdown Enclosed
AC to DC Motor Speed Controls

Use these controls with motors that run forward and backward, such as motors for conveyor belts.

Washdown Enclosed AC to DC Motor Speed Controls

A NEMA 4X rated enclosure protects these controls from corrosion and washdowns.

Harsh Environment Potentiometers

Rated NEMA 4X and 13, these potentiometers are protected from debris, washdowns, and oil/coolant spraying.

Washdown Relays

A NEMA 4X enclosure protects the relay from washdowns, dirt, and corrosion. It has wire leads to hardwire to your equipment.

Temperature Control

Autocorrecting Washdown Precision
Panel-Mount Temperature Controllers

The faceplate is sealed to meet NEMA 4X for protection in washdown environments with splashing water, corrosive liquid, and dust.

Precision Panel-Mount Temperature Controllers

Install these controllers into instrument panels.

Precision Washdown Wall-Mount
Temperature Controllers

For protection in washdown conditions with splashing water, corrosive liquid, and dust, these controllers have a housing that meets NEMA 4X.

Washdown Threaded Temperature Switches

To control heating equipment in washdown environments with splashing water, corrosive liquid, and dust, these switches have a housing that meets NEMA 4X.

Hazardous Location Threaded Temperature Switches

Often used in hazardous locations, such as chemical plants, refineries, and grain elevators, these switches have a housing that’s UL listed for environments with flammable gases, combustible dust, and ignitable fibers.

Washdown Wall-Mount Temperature Switches

To protect these switches from splashing water, corrosive liquid, and dust, the housing meets NEMA 4X for washdown conditions.

Hazardous Location Wall-Mount Temperature Switches

Housing is UL listed for environments with flammable gases, combustible dust, and ignitable fibers, such as chemical plants, refineries, and grain elevators.

Washdown Line-Voltage Thermostats

These thermostats are rated NEMA 4X for protection from dirt, washdowns, and corrosion.

Pressure and Vacuum Switches

Pressure Switches

The traditional pressure switch. These power equipment, activate controls or alarms, or kick-off other actions when they reach a set pressure.

Hazardous Location Pressure Switches

Built with an explosionproof enclosure to meet NEMA 7 and 9 standards for hazardous locations, these switches were tested and verified by UL and CSA for use where explosive liquids, dust, and gas are present.

Adjustable-Reset Pressure Switches with Digital Display

Kick off automated controls, signal alarms, or activate equipment based on pressure changes while checking the pressure, setpoint, and reset point on the display.

Manual-Reset Pressure Switches

Used as a safety control, these switches must be manually reset each time they hit the set pressure, so you can inspect equipment before it restarts.

Adjustable-Reset Pressure Switches

Choose when these switches reset to control the pressure range between when they activate and deactivate, commonly referred to as deadband and differential.

Dual-Setpoint Pressure Switches

Trigger two different automated processes, each with their own set pressure.

Washdown Differential Pressure
Switches with Dial Indicator

Not only are these switches rated NEMA 4X for protection from dirt, washdowns, and corrosion, they also have an indicator for additional monitoring at the source of your application.

Adjustable-Reset Vacuum Switches

Control the amount of vacuum change between when these switches activate and deactivate by adjusting when they reset.

Pressure and Vacuum Switches

Because these switches work with both positive and negative (vacuum) pressures, you can use them in applications that span both.

Flow and Level Monitoring and Control

Ultrasonic Noncontact Level Switches for Chemicals

Use high-frequency sound waves to detect chemical level.

Noncontact Level Switches for Conductive Liquids

Measure the level of conductive liquids without drilling a hole in your tank—these switches mount to the outside of the tank and track the capacitance between them and the tank’s contents.

Level Switches for Dry Materials

When dry material rises to the level of the rotating paddle, these switches actuate.

Washdown Flow Switches for Water and Oil

For protection from dirt, washdowns, and corrosion, these switches have an enclosure that meets NEMA 4X.

Insertion Flow Switches for Water

For use in cooling and process systems.

Lights

Sanitary Articulating-Arm Machine Lights

Shine light on machinery and through the sight glass on tanks to inspect food, brewery, chemical, pharmaceutical, and bio-tech processing lines.

Sanitary Lights for Quick-Clamp Fittings

Attach these lights in one of the quick-clamp ports for a clear view of what's inside tanks, filters, and other closed containers used in brewery, pharmaceutical, and food-processing lines.

Speed-Monitoring Switches

Set to a specific speed to detect unwanted machinery slowdown that can cause damage and downtime.