5

WL/WLM

Selection Guide

With the WL Series, OMRON will combine the switch, Actuator, and wiring method required to build the ideal switch for

your application.

*1. Not all functions can be combined with environment-resistant switches. Refer to the applicable models on the previous page.

*2. Refer to page 25 for information on the construction of Hermetic Switches.

The WL Series consists of four basic types: General-purpose, En-

vironment-resistant, Spatter-prevention, and Long-life Switches.

WLCA2 Switches can be used for the most common applications.

Normal

High-temperature

Low-temperature

Outdoors

−10°C

+80

°C

+5

°C

+120

°C

−40°C

+40

°C

Water-resistant to IP67.

Environment

Key specifications

Models

WL

@

General-purpose

Switches

WLM

@

Long-life Switches

WL

@-TH

Heat-resistant

Switches *1

WL

@-TC

Low-temperature

Switches *1

WL

@-P1

Weather-proof

Switches *1

Water drops and mist

Uses an airtight built-in switch.

WL

@-55

Airtight Switches *1

WL

@-RP

Corrosion-proof

Switches *1

WL

@-S

Spatter-prevention

Switches

Chemicals and oil

WL

@-139

Hermetic, Molded-terminal

Switches *1, *2

WL

@-RP40

Hermetic, Molded-terminal

Switches *1, *2

WL

@-140

Hermetic, Molded-terminal

Switches *1, *2

WL

@-141, -145

Hermetic, Molded-terminal

Switches *1, *2

(Only the WLCA2, WLG2, WLGCA2,

and WLH2 can be produced.)

WL

@-RP60

Hermetic, Molded-terminal

Switches *1, *2

According to Operating Environment

To increase heat resistance, the rubber material (silicon rubber)

and the material of the built-in switch have been changed.

Cables attached. Uses a general-purpose built-in switch.

The case cover and conduit opening are molded from epoxy

resin to increase the seal. The cover cannot be removed.

Cables attached. Uses an airtight built-in switch.

The cover screws, case cover, box interior, and conduit opening

are molded from epoxy resin to increase the seal.

(The cover cannot be removed.)

Cables attached. Uses an airtight built-in switch.

The cover screws, case cover, box interior, conduit opening, box

head, and head screws are molded from epoxy resin to increase

the seal. (The cover cannot be removed.)

The Head opening is protected from cutting powder.

-141: The Head section is molded from epoxy resin;

Head direction cannot be changed.

-145: The Head section is molded from epoxy resin;

Head can be in any of 4 directions.

Cables attached. Uses an airtight built-in switch.

The case cover and box interior are molded from epoxy resin to

increase the seal. The cover cannot be removed.

The SC connector can be removed, so it is possible to use

flexible conduits for the cable.

To prevent spatter during welding, a heat-resistant resin is used

for the indicator cover and screws and rollers are all made from

stainless steel.

Cables attached. Uses an airtight built-in switch.

The case cover, box interior, conduit opening, and head screws

are molded from epoxy resin to increase the seal. (The cover

cannot be removed.) Rubber parts are made from fluorine rubber

to increase resistance to coolant.

Rubber parts are made from silicone rubber, which has a

high-tolerance to deterioration over time and changes in temperature.

Rollers are made of stainless steel to improve corrosion resistance.

Exposed nuts and screws are made of stainless steel.

Corrosion-proof aluminum diecast has been used for the

housing, fluorine rubber has been used for rubber parts, and

stainless steel has been used for screws and nuts (except for

actuator) to increase resistance to oils, chemicals, and weather.

To increase resistance to cold, silicon rubber and other

measures are used.

Constant water

drops and mist

Coolant

Spattering from

welding

Constant water

drops or splattering

cutting powder