4

Watertight Snap Action Switch

D2FW-G

Precautions

Use the Switch within the specified electrical ratings. Using the

Switch outside of the rated values will not only shorten its service life

but may cause heat generation or fire damage. When turning the

power ON or OFF, use the rated voltage and current.

■ Enclosure Ratings

Do Not Use the Switch Underwater

The Switch was tested and found to meet the conditions necessary

to meet the following standard. The test checks for water intrusion

after immersion for a specified time period. The test does not check

for switching operation underwater.

IEC Publication 529, degree of protection IP67.

Protection Against Chemicals

Prevent the Switch from coming into contact with oil or chemicals, to

avoid damaging (or deterioration of) Switch materials.

■ Mounting

Preparation for Mounting

Turn the power OFF before (1) mounting or removing the Switch, or

(2) before performing maintenance or inspection. Failure to do so can

cause electrical shock or fire.

Mount the Switch on a flat surface. If it is mounted on an uneven sur-

face the Switch may bend, causing a malfunction or cracking the

housing.

Mounting the Switch

Mount the switch securely, using an M4 screw with a flat washer or

spring washer. Tighten the screw to a torque of 1.18 to 1.47 N S m.

When mounting the switch, do not apply any external pressure to the

actuator in a direction other than the direction of operation.

The following diagram shows the mounting hole dimensions.

Mounting Holes

■ Operation

Make sure that the switching object is perfectly separated from the

actuator when the switch is not operated and the actuator is pressed

appropriately by the switching object when the switch is operated.

The switching object must not move beyond its operational limit posi-

tion.

Position the switching object so that its moving direction is the same

as that of the actuator.

■ Using the Switch with Micro

Loads

Even when the Switch is used within the appropriate operating

range, power surges may shorten its service life. Insert a contact pro-

tection circuit as required.

Micro application loads are indicated by N standard reference values.

This value represents the failure rate at a 60% (

λ60) reliability level.

(JIS C5003)

The equation

of 1/2,000,000 operations can be expected at a reliability level of

60%.

Model

D2FW-G0j

D2FW-G2j

Micro application load

5 VDC, 1 mA

5 VDC, 100 mA