Miniature Pushbuttons
Series KB
Distinctive Characteristics
Bright illumination with numerous color variations. Spot illumination available.
Square, rectangular, and round shaped caps.
Incandescent, LED, and neon lamps. Front panel relamping.
Choice of bright or super bright LEDs in red, amber, green,
white, and blue.
Latchdown feature gives indication of circuit status. Audible
and tactile feedback with smooth and responsive operation.
Snap-action mechanism for long life.
Stainless steel frame on snap-in models has a specially
designed projection, which prevents rotation and correctly
orients switch in panel.
12mm (.472") body diameter.
Molded-in terminals lock out flux, dust and other contaminants.
8mm (.315") panel thickness capability. Rear panel bushing
or snap-in mounting.
Optional PCB adaptors in straight and right angle types.
Nonilluminated models available and shown in Pushbutton
section.
Matching indicators available and shown in Indicator section.
Actual Size
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12-02
Miniature Pushbuttons
Series KB
General Specifications
Electrical Capacity (Resistive Load)
Power Level (code W):
1A @ 125/250V AC or 1A @ 30V DC
Logic Level (code G):
0.4VA maximum @ 28V AC/DC maximum
Note: See Supplement Index (page Z1) to find explanation of operating range.
Other Ratings
Contact Resistance:
Insulation Resistance:
Dielectric Strength:
50 milliohms maximum
1,000 megohms minimum @ 500V DC
For Silver: 1,000V AC minimum between contacts for 1 minute minimum &
1,500V AC minimum between contacts & case for 1 minute minimum;
For Gold: 750V AC minimum between contacts for 1 minute minimum &
1,500V AC minimum between contacts & case for 1 minute minimum
100,000 operations minimum
50,000 operations minimum for silver; 100,000 operations minimum for gold
Single pole 100 ~ 250 grams for maintained & 100 ~ 200 grams for momentary;
Double pole 150 ~ 350 grams for maintained & 150 ~ 300 grams for momentary
Nonshorting (break-before-make)
2.2mm (.087") pretravel; 0.80mm (.031") overtravel; 3.0mm (.118") total travel
Mechanical Life:
Electrical Life:
Nominal Operating Force:
Contact Timing:
Travel:
Materials & Finishes
Housing:
Movable Contactor:
Stationary Contacts:
Housing Base:
Common Terminals:
End Terminals:
Lamp Terminals:
Polyamide
Silver for power circuit; copper with gold plating for logic level circuit
Silver for power circuit; copper with gold plating for logic level circuit
Polyamide
Terminal Base:
Polyester
Phosphor bronze with silver flash plating for power circuit;
Phosphor bronze with gold flash plating for logic level circuit
Brass with silver flash plating for power circuit;
Brass with gold flash plating for logic level circuit
Phosphor bronze with nickel flash plating
Environmental Data
Operating Temp Range:
Humidity:
Vibration:
Shock:
-25°C through +50°C (-13°F through +122°F)
90 ~ 95% humidity for 96 hours @ 40°C (104°F)
10 ~ 55Hz with peak-to-peak amplitude of 1.5mm traversing the frequency range
& returning in 1 minute; 3 right angled directions for 2 hours
50G (490m/s
2
) acceleration (tested in 6 right angled directions, with 3 shocks in each direction)
Installation
Mounting Torque:
Cap Installation Force:
Soldering Time & Temperature:
Process Seal:
.78Nm (6.9 lb
•
in) maximum
4.51N (1.0 lbf) maximum downward force on cap
3 seconds @ 350°C or 5 seconds @ 270°C
Not available
Standards & Certifications
Flammability Standards:
UL Recognized:
UL94V-0 housing & base
Single & double pole models recognized at 1A @ 125/250V AC, 1A @ 30V DC,
& 0.4A @ 28V DC; UL File No. WOYR2.E44145;
add "/U" to end of part number to order UL mark on switch.
Single & double pole models recognized at 1A @ 125/250V AC, 1A @ 30V DC,
& 0.4VA @ 28V maximum; CSA File No. 023535-0-000;
add "/C" to end of part number to order CSA mark on switch.
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CSA Certified:
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435
Miniature Pushbuttons
TYPICAL SWITCH ORDERING EXAMPLE
Series KB
KB
1
5
C
K
W01
12
FF
POLES
1
2
SPDT
DPDT
SHAPES
Bushing Mounting
S
Square
C
Round
R
Rectangular
Snap-In Mounting
K
Square
M
Round
N
Rectangular
K
HOUSING
Black only
LAMPS
Incandescent Lamp used with Solid Cap
05
12
5-volt
12-volt
BB
CB
CC
EB
CAP TYPES & COLORS
Solid Cap: Lens/Filter Colors
White/White
FB
Red/White
FF
Red/Red
GB
Yellow/White
GG
Green/White
Green/Green
Blue/White
Blue/Blue
CIRCUITS
5
ON
(ON)
( ) = Momentary
6
ON
ON
Alternate Action
with Latchdown
CONTACTS & TERMINALS
W01
Silver Contacts and
Solder Lug Terminals
1A @ 125/250V AC
Gold Contacts and
Solder Lug Terminals
0.4VA @ 28V AC/DC
G01
Incandescent or Neon used w/ Insert Cap
05
12
01
5-volt
12-volt
110-volt Neon
Insert Cap: Lens/Filter Colors
JB
JC
JE
JF*
JG*
* JF
Clear/White
Clear/Red
Clear/Yellow
Clear/Green
Clear/Blue
& JG not suitable with neon.
DESCRIPTION FOR TYPICAL ORDERING EXAMPLE
KB15CKW01-12-FF
12-volt Incandescent Lamp
Round Shape and Bushing Mountable
Solid Cap with
Green Lens and Green Filter
5C
Black Housing
5D
5F
Silver Contacts and
Solder Lug Terminals;
rated 1A @ 125/250V AC
Bright LED used with Cap for LED
Colors
Red
Amber
Green
Resistor
No Code
05
12
24
No Resistor
5-volt
12-volt
24-volt
AB
JB
JC
JD
JF
LED Cap: Lens/Diffuser Colors
Square Spot Illuminated
Black Cap/White Window
Clear/White
Clear/Red
Clear/Amber
Clear/Green
SPDT
ON-(ON) Circuit
Super Bright LED used with Cap for LED
6B
6F
6G
White
Green
Blue
JB
LED Cap: Lens/Diffuser Colors
Clear/White
IMPORTANT:
Switches are supplied without UL &
CSA marking unless specified.
Specific models & ratings noted on
General Specifications page.
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435
www.nkkswitches.com
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435
www.nkkswitches.com
12-02
Miniature Pushbuttons
POLES & CIRCUITS
(
Plunger Position
) = Momentary
Down
Series KB
Connected Terminals
Normal
Down
Throw & Power/Lamp Schematics
Notes: Switch is marked with "+" and "-".
Lamp circuit is isolated and requires
external power source.
2 (COM)
Normal
Pole
SP
Model
KB15
KB16*
KB25
KB26*
ON
ON
ON
ON
(ON)
ON
(ON)
ON
2-3
2-3 5-6
2-1
2-1 5-4
SPDT
3
2
3
(COM)
1
6
L (+)
1
5
(-) L
DP
DPDT
L (+)
4
(-) L
* When in latchdown position for the alternate circuit, cap position is 1.4mm (.055") above the built-in bezel.
SHAPES & MOUNTING TYPES
Bushing Mounting
S
.551" Square
C
.551" Round
R
.551" x .728" Rectangular
The bezel is an integral part of the switch body. One mounting nut AT057 supplied with each switch.
Snap-In Mounting
K
.551" Square
M
.551" Round
N
.551" x .728" Rectangular
The bezel is an integral part of the switch body.
Panel Cutouts
Bushing Mounting
(1.8)
.071
Snap-In Mounting
Panel Thickness:
1.0 ~ 3.5mm
(.039 ~ .138")
(1.2) R
.047
Without
Keyway
(12.3) Dia
.484
Panel Thickness:
0.5 ~ 8mm
(.020 ~ .315")
(4.9)
.193
(12.3) Dia
.484
With
Keyway
(6.8)
.268
(12.3) Dia
.484
Panel thicknesses, when using optional accessories, are shown with the accessories at the end of this KB section.
HOUSING
K
Housing available in black only.
Shroud is an integral part of the switch body.
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12-02
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435
Miniature Pushbuttons
CONTACT MATERIALS, RATINGS, & TERMINALS
W
G
Silver Contacts
Power Level
1A @ 125V AC & 250V AC
Series KB
Gold Contacts
Logic Level
0.4VA maximum @ 28V AC/DC
See Supplement Index (page Z1) for complete explanation of operating range.
Solder Lug
The .039" x .079" oblong
hole accommodates one
solid 20-gauge wire or two
solid or stranded 22-gauge
wires.
01
(5.0)
.197
(2.0)
(1.8)
.079
.071
(1.0)
.039
Thk = (0.2) Com = (0.1)
.008
.005
A partitioned plastic guard is supplied with each switch to provide insulation between terminals.
Installation steps:
(1) Identify wire-to-terminal connections.
(2) Thread wires through the guard.
(3) Solder the connections.
(4) Push the guard fully onto the switch body.
(12.4) Dia
.488
(14.0) Dia
.551
(17.0)
.669
LAMP CODES & SPECIFICATIONS
Electrical specifications are determined at a basic temperature of 25°C. Lamp circuit is independent of switch operation.
For dimension drawings of lamps see the Accessories & Hardware Index (page Y1).
If the source voltage is greater than rated voltage, a ballast resistor is required. The ballast resistor calculation and more lamp
detail are shown in the Supplement; see Supplement Index (page Z1).
Ambient Temperature Range for lamps below: -25°C ~ +50°C.
Incandescent & Neon Lamps
AT611
Incandescent
AT615
Neon
05
Voltage
Current
V
I
Hours
5V AC
115mA
12
12V AC
60mA
01
110V AC
1.5mA
10,000
Recommended Resistors for
Neon: 33K ohms for 110V
AC; 100K ohms for 220V AC
T-1 Bi-pin
Endurance
7,000 average
Bright LED without Resistor
Red
Amber
Green
AT635
LEDs are colored
in OFF state.
(+)
(-)
Color Codes:
5C
5D
5F
I
FM
I
F
V
F
V
RM
∆I
F
No Code
30mA
20mA
1.9V
5V
0.42mA/°C
No Resistor
Forward Peak Current
Continuous Forward Current
Forward Voltage
Reverse Peak Voltage
Current Reduction Rate Above 25°C
30mA
20mA
2.0V
5V
0.29mA/°C
30mA
40mA
2.1V
5V
0.42mA/°C
T-1
1
⁄
2
Bi-pin
Bright LED with Resistor
AT634
LEDs are colored
in OFF state.
Color Codes:
Red
Amber
Green
Resistor Codes
5C
5D
5F
I
FM
I
F
V
F
V
RM
∆I
F
(-)
05
–––
25mA
5V
4V
–––
AT634
(+)
24-volt
4-element
with 2 Resistors
12
–––
20mA
5V
8V
–––
24
–––
10mA
5V
16V
–––
Forward Peak Current
Continuous Forward Current
Forward Voltage
Reverse Peak Voltage
T-1
1
⁄
4
Bi-pin
Current Reduction Rate Above 25°C
AT634
12-volt
(+)
4-element
with 2 Resistors
AT634
5-volt
(+)
2-element
with 1 Resistor
(-)
(-)
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435
www.nkkswitches.com
12-02
DIY/Open Source Hardware
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