WL/WLM
Environment-resistant Switches
Item
Environment-resistant
Type
Model
Application
Environment-resistant construction
Applicable models
All models except the low-
temperature and heat-re-
sistant models
Note: Models can be produced
using standard
Uses the W-10FB3-55 Airtight Built-in Switch.
Note: Use the SC Connector for the conduit opening.
Airtight seal
WL@-55
actuators.
All models except the low-
temperature and heat-re-
sistant models
WL@-139
WL@-140
WL@-141
WL@-145
WL@-RP40
WL@-RP60
For uses in locations sub-
ject to cutting oil or water
Note: Models can be produced
using standard
Hermetic seal
(Molded terminals/
Anti-coolant)
Refer to page 25 for information on the environ-
ment-resistant construction of Switches with Her-
metic Seals.
actuators. Only the
WLCA2, WLGCA2, or
WLH2 can be produced
for the WL@-141 and
WL@-145.
Can be used at a tempera-
ture of –40°C (operating
All models except airtight
seal, hermetic seal, heat-
• Uses a general-purpose built-in switch.
Low-temperature * WL@-TC
temperature range: –40 to • Silicone rubber is used for rubber parts such as resistant, corrosion-proof,
40°C), but cannot with-
stand icing.
the O-ring, gasket, etc.
and indicator-equipped
models
All models except airtight
seal, hermetic seal, heat-
resistant, corrosion-proof,
and indicator-equipped, ny-
lon roller (WLCA2-26N),
seal roller models, and res-
in rod (WLNJ-2) models
Can be used in tempera-
tures of 120°C (operating
temperature range: 5 to
120°C).
• Uses a special built-in switch made from heat-
resistant resin.
• Silicone rubber is used for rubber parts such as
the O-ring, gasket etc.
Heat-resistant *
Corrosion-proof
Weather-proof *
WL@-TH
WL@-RP
WL@-P1
• Diecast parts, such as the switch box, are made
of corrosion-proof aluminum.
• Rubber sealing parts are made of fluorine
rubber which aids in resisting oil, chemicals and
adverse weather conditions.
All models except overtrav-
el (90° operation), fork le-
ver lock (WLCA32-41 to -
43), low-temperature, heat-
resistant, and indicator-
equipped models
For use in locations sub-
ject to corrosive gases and • Exposed nuts and screws (except the actuator
chemicals.
section) are made of stainless steel.
• Moving and rotary parts such as rollers are
made of sintered stainless steel or stainless
steel.
• The Head, box, and cover are yellow.
• Rubber parts are made from silicone rubber,
Only basic (WLCA2/CA12/
which has a high-tolerance to deterioration over CL), general-purpose over-
time and changes in temperature.
• Rollers are made of stainless steel to improve
corrosion resistance.
travel (WLH2/H12/HL) and
high-sensitivity overtravel
(WLG2/G12/GL) models
For use in parking lots and
other outdoor locations.
• Exposed nuts and screws are made of stainless (excluding heat-resistant
steel. models).
* Weather Resistance, Cold Resistance, and Heat Resistance
Silicon rubber is used to increase resistance to weather, cold, and heat. Silicon rubber, however, can generate silicon gas. (This can occur at room temperature, but
the amount of silicon gas generated increases at higher temperatures.) Silicon gas will react as a result of arc energy and form silicon oxide (SiO2). If silicon oxide
accumulates on the contacts, contact interference can occur and can interfere with the device. Before using a Switch, test it under actual application conditions
(including the environment and operating frequency) to confirm that no problems will occur in actual.
4
OMRON [ OMRON ELECTRONICS LLC ]
