SWITCHES
PUSH BUTTON
188
Tamper proof push button switch mounts in 16.0 mm (5/8”) hole in panel up to .50” thick. Bushing & button is made from brass, nickel plated for durability.
Features IP67 protection and illuminated ring around actuator. Switches can be used in both illuminated and non-illuminated application (12V DC LED).
Bushing & Button:
Brass Nickel plated
Contacts:
Silver, alloy
Nut:
Nickel plated Brass
Base:
PBT.
MATERIALS:
Contact Rating:
3A @ 250V AC, 2A @ 24V DC
Electrical Life:
50.000 cycles
Contact Resistance:
50m-ohms max (initial).
Insulation Resistance:
1,000M-ohms min @ 500V DC
Dielectric Strength:
2,000V RMS 50 ~ 60Hz
Operating Temperature:
-20° ~ +70° C
Switching Circuit:
ON - ON (latching)
IP Class:
IP67 protection
Torque:
5 ~ 14Nm max. applied to nut
Operating Force:
5.5N max.
SPECIFICATIONS:
Part No. Type
Action
Actuator
30-12646
SPDT (ON)
or
(OFF)
Brass w / Red LED
30-12648
SPDT (ON)
or
(OFF)
Brass w / Green LED
30-12650
SPDT (ON)
or
(OFF)
Brass w / Blue LED
30-12652
SPDT Push ON -
Push OFF Brass w / Red LED
30-12654
SPDT Push ON -
Push OFF Brass w / Green LED
30-12656
SPDT Push ON -
Push OFF Brass w / Blue LED
NOTE: ( ) = Momentary
WHAT IS AN IP CODE?
An IP code refers to the different levels of protection an enclosure
provides. A worldwide standard has been established by the
International Electrotechnical Commission (IEC). The code contains
two separate numerals, the first numeral indicates protection against
access to hazardous parts and protection of equipment against
ingress of solid foreign objects, including dust. The second numeral
indicates protection of equipment against harmful ingress of water.
IP67: 6 = complete protection against entry of dust (rating 1 to 6)
7 = protection against temporary immersion (rating 1 to 8)
Using an LED
An LED (light emitting diode) requires about two volts to operate and twenty milliamps of current. A current
limiting resistor must be used in series with an LED to prevent current over 20 mA from flowing; otherwise,
your LED will be damaged. You may simply use Ohm’s law to calculate the resistor value. Here is an exam-
ple: We have a circuit operating at 12 volts DC, and need to know the value of a resistor to use. The LED
“wants” two volts to operate ; so subtract 2 from the 12 volts which, is of course, ten. Plug the “ten” in at “E”
and divide by “I” or .020 amps. The result is 500 ohms for the resistor value
If you forget to subtract the two volts, the resistor value will be 600 and the LED will not be at maximum
brightness. However, it will last much longer (about double normal life)!
Another formula you can use is R=50(V-2). The R is for resistor, the V for voltage. We like this one as it is
easy to recall and do in your head.
LED wth DC
(Direct Current)
When using an LED with AC, a diode must be placed in
series with the LED. Because AC will only be flowing
1/2 the time, we use a variation on the easy formula
shown to the left(bottom). Use R=25(V2.7), which
includes the voltage drop across the diode.
So, if you have a circuit using 28 volts AC, multiply
25.3 (or 28V -2.7), times 25 equals 632 ohms. We need
to use a standard value resistor, so use 680 ohms for
“R”.
LED with AC
(Alternating Current)
DC Volts
5V
6V
12V
24V
Resistor (ohms)
150
180
470
1200
AC Volts
6V
12V
24V
48V 117V
Resistor (ohms)
82
220
560
1200 3K
Typical voltages used in electronics and resistor values (rounded to nearest standard resistor).
SEALED ILLUMINATED PUSH BUTTON SWITCHES
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