Snap Action Switch

SS

101

Precautions

Be sure to read the precautions and information common to all Snap Action and Detection Switches, contained in the Technical User’s Guide,

“Snap Action Switches, Technical Information” for correct use.

■ Correct Use

Mounting

Mount the switch onto a flat surface. Mounting on an uneven surface

may cause deformation of the switch, resulting in faulty operation or

breakage in the housing.

Operating Stroke

Take particular care in setting the operating stroke for the pin plunger

models. Make sure that the operating stroke is 70% to 100% of the

rated OT distance. Do not operate the actuator exceeding the OT dis-

tance, otherwise the life expectancy of the switch may be shortened.

Using Microloads

Using a model for ordinary loads to switch microloads may result in

faulty operation. Instead, use the models that are designed for

microloads and that operate in the following range;

However, even when using microload models within the operating

range shown above, if inrush current or inductive voltage spikes

occur when the contact is opened or closed, then contact wear may

increase and so decrease the service life. Therefore, insert a contact

protection circuit where necessary.

■ Cautions

Handling

Turn OFF the power supply before mounting or removing the switch,

wiring, or performing maintenance for inspection. Failure to do so

may result in electric shock or burning

Terminal Connection

When soldering the lead wire to the terminal, first insert the lead wire

conductor through the terminal hole and then solder.

Make sure that the capacity of the soldering iron is 60 W maximum.

Do not take more than 5 seconds to solder the switch terminal.

Improper soldering involving an excessively high temperature or

excessive soldering time may deteriorate the characteristics of the

switch.

Be sure to apply only the minimum required amount of flux. The

switch may have contact failures if flux intrudes in the interior of the

switch.

Use the following lead wires to connect to the solder terminals;

If the PCB terminal models are soldered in a solder bath, flux will per-

meate inside the switch and cause contact failure. Therefore, manu-

ally solder the PCB terminal.

Wire the quick-connect terminals (#110) with receptacles. Insert the

terminals straight into the receptacles. Do not impose excessive

force on the terminal in the horizontal direction, otherwise the termi-

nal may be deformed or the housing may be damaged.

Insulation Distance

Use a separator between the switch and metal mounting panels, to

ensure proper dielectric characteristics are achieved.

According to EN61058-1, the minimum insulation thickness for this

switch should be 1.1 mm and minimum clearance distance between

the terminal and mounting plate should be 1.6 mm. If the insulation

distance cannot be provided in the product incorporating the switch,

either use a switch with insulation barrier or use a separator to

ensure sufficient insulation distance.

Operating range

for micro load

models SS-01

Operating

range for

general-load

models

SS-5, SS-10

Current (mA)

Inoperable

range

30

24

12

1,000

100

10

1

0

5

100mA

100mA 160mA

26mA

1mA

0.16mA

Model

Conductor size

SS-5

SS-10

Separator