Standard Size Pushbuttons
Series LB
Distinctive Characteristics
Square, round, rectangular, and round panel seal models
available.
Stainless steel clips provide secure mounting with a wide
range of panel thicknesses.
Latchdown feature gives indication of circuit status.
Audible and tactile feedback with smooth and
responsive operation.
Snap-action contact mechanism gives long electrical
life and sensitivity of actuation.
Combination solder lug and .110” quick connect
terminals are epoxy sealed to prevent entry of flux,
dust, and other contaminants.
Panel sealed model meets IP65 of IEC60529 specifications
(similar to NEMA 4 & 13).
Compact switch design minimizes behind panel depth.
Matching illuminated models available and shown in the
Illuminated Pushbutton section.
Matching indicators available and shown at the end of Section M.
Actual Size
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
03-07
Standard Size Pushbuttons
Series LB
General Specifications
Electrical Capacity (Resistive Load)
Power Level (silver):
Logic Level (gold):
3A @ 125V AC or 3A @ 250V AC or 3A @ 30V DC
0.4VA maximum @ 28V AC/DC maximum
(Applicable Range 0.1mA ~ 0.1A @ 20mV ~ 28V)
Note: Find additional explanation in Supplement section.
Other Ratings
Contact Resistance:
Insulation Resistance:
Dielectric Strength:
Mechanical Life:
Electrical Life:
Nominal Operating Force:
Contact Timing:
Travel:
50 milliohms maximum for silver; 100 milliohms maximum for gold
200 megohms minimum @ 500V DC
1,000V AC minimum between contacts for 1 minute minimum;
1,500V AC minimum between contacts & case for 1 minute minimum
1,000,000 operations minimum for momentary circuit
200,000 operations minimum for maintained circuit
100,000 operations minimum
4.41N
Nonshorting (break-before-make)
Pretravel .059” (1.5mm); Overtravel .059” (1.5mm); Total Travel .118” (3.0mm)
Pretravel .087” (2.2mm); Overtravel .031” (0.8mm); Total Travel .118” (3.0mm)
Materials & Finishes
Housing:
Snap-in Frame:
Movable Contact:
Stationary Contacts:
Base:
Terminals:
Glass fiber reinforced polyamide (UL94V-0)
Stainless steel
Silver alloy or copper with gold plating
Silver alloy or copper with gold plating
Liquid crystal polymer (UL94V-0)
Phosphor bronze with silver or gold plating
Environmental Data
Operating Temp Range:
Humidity:
Vibration:
Shock:
Sealing:
–25°C through +70°C (–13°F through +158°F)
Note: When used with a polyvinyl chloride splash cover, the lowest limit is 0°C (32°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 5 shocks in each direction)
Not available for snap-in; see next section for panel seal.
Installation
Cap Installation Force:
Quick Connect Force:
Soldering Time & Temperature:
3.92N maximum downward force on cap
52.95N maximum downward force on connector
Manual Soldering: See Profile A in Supplement section.
Standards & Certifications
Flammability Standards:
UL & C-UL Recognized:
R
CSA Certified:
UL94V-0 housing & base
All models recognized at 3A @ 125V or 250V AC or 0.4VA @ 28V AC/DC maximum;
UL File No. WOYR2.E44145; add “/U” to end of part number to order UL mark on switch;
C-UL File No. WOYR8.E44145; add “/C-UL” to end of part number to order C-UL mark on switch.
All models certified at 3A @ 125V or 250V AC or 0.4VA @ 28V AC/DC maximum;
CSA File Nos. 023535-0-000; add “/C” to end of part number to order CSA mark on switch.
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
03-07
Standard Size Snap-in Pushbuttons
TYPICAL SWITCH ORDERING EXAMPLE
Series LB
LB
1
5
S
K
W01
C
POLES
1
2
SPDT
DPDT
S
C
R
SHAPES
Square
Round
Rectangular
G01
W01
CONTACTS & TERMINALS
Silver Contacts
Rated 3A @ 125/250V AC
Solder Lug/Quick Connect Terminals
Gold Contacts
Rated 0.4VA @ 28V AC/DC
Solder Lug/Quick Connect Terminals
CIRCUITS
5
6
ON
ON
(ON)
ON
( ) = Momentary
Alternate Action
with Latchdown
K
G
HOUSING
Black
Gray
A
B
C
Black
CAP COLORS
E
F
Yellow
Green
G
Blue
H
Gray
White
Red
IMPORTANT:
Switches are supplied without UL,
C-UL & CSA markings unless speci-
fied. Specific models & ratings noted
on General Specifications page.
Note: Insert Cap with clear lens and
colored filter available; see
Illuminated Pushbuttons section
DESCRIPTION FOR TYPICAL ORDERING EXAMPLE
LB15SKW01-C
Red Cap
SPDT
ON-(ON) Circuit
Square Shape
Silver Contacts
Rated 3A @ 125/250V AC;
Solder Lug/Quick Connect Terminals
Black Housing
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
03-07
Standard Size Snap-in Pushbuttons
POLES & CIRCUITS
Plunger Position
( ) = Momentary
Normal
Pole
SP
DP
Model
LB15
*LB16
LB25
*LB26
ON
ON
ON
ON
(ON)
ON
(ON)
ON
1-3
1-3 4-6
1-2
1-2 4-5
Down
Connected Terminals
Normal
Down
Note:
Series LB
Throw & Switch/Lamp Schematics
Switch is marked with NC, NO, COM, L+, L–.
1
COM
2
NO
4
NO
6
NC
COM
5
NO
SPDT
1
3
COM
NC
DPDT
3
NC 2
*
When in latchdown position for the alternate circuit, cap position is .039” (1.0mm) above the built-in bezel.
SHAPES & PANEL CUTOUTS
S
.622” (15.8mm)
Square
C
.854” (21.7mm)
Round
R
(22.0) Dia
.866
.622” x .866” (15.8mm x 22.0mm)
Rectangular
(16.2)
.638
(11.5)
.453
(16.2) Sq
.638
(1.5) R
.059
(22.4)
.882
Cutout for 1 switch:
.638” x .638” (16.2mm x 16.2mm)
Cutout for 1 switch with barriers:
.638” x .815” (16.2mm x 20.7mm)
Cutout for 1 switch:
.638” x .882” (16.2mm x 22.4mm)
Cutout for 1 switch with barriers:
.638” x 1.059” (16.2mm x 26.9mm)
Panel Thickness for Switches & Barriers:
.039” ~ .157” (1.0 ~ 4.0mm)
Panel Thickness for Protective Guards & Splash Covers:
.039” ~ .138” (1.0 ~ 3.5mm)
HOUSING
Housing Colors Available:
K
Black
G
Gray
CONTACT MATERIALS, RATINGS & TERMINALS
W01
G01
Silver Contacts
Gold Contacts
Power Level
3A @ 125V AC & 250V AC
Logic Level
0.4VA max. @ 28V AC/DC max.
Solder Lug/Quick Connect
Epoxy
Seal
(2.0)
.079
(7.5)
.295
(2.8)
.110
(1.2)
.047
Complete explanation of operating range in Supplement section.
Thk = (0.5)
.020
CAPS & CAP COLORS
Color Codes:
Cap Colors Available:
A
Black
AT484
Square
B
White
C
Red
AT4017
Round
E
Yellow
F
Green
G
Blue
(13.2)
.520
H
Gray
(19.4)
.764
A
B
C
E
F
G
H
(13.2) Sq
.520
(3.5)
.138
(19.0) Dia
.748
(4.5)
.177
AT4030
Rectangular
(6.5)
.256
(5.5)
.217
(5.0)
.197
(6.0)
.236
Material: Polycarbonate
Finish: Glossy
03-07
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
Standard Size Snap-in Pushbuttons
TYPICAL SWITCH DIMENSIONS
Square
Single & Double Pole
Series LB
(1.8)
.071
(1.2) x (2.0) Typ
.047 x .079
(0.5) Typ
.020
NC
NO
3
2
L (+)
6
5
(13.2) Sq
.520
(2.54) Typ
.100
(1.0)
.039
(17.8) Sq
.701
(3.2)
.126
(21.5)
.846
Latchdown Position
(7.5)
.295
(15.8) Sq
.622
COM
1
L (-)
4
(2.8) Typ
.110
(5.08) Typ
.200
LB15SKW01-C
Single pole models do not have terminals 4, 5, & 6.
Round
Single & Double Pole
(1.8)
.071
(1.2) x (2.0) Typ
.047 x .079
(0.5) Typ
.020
L (+)
NC
NO
3
2
6
5
4
(15.8) Sq
.622
(21.7) Dia
.854
(2.54) Typ
.100
(19.0) Dia
.748
(23.7) Dia
.933
(1.0)
.039
(3.2)
.126
(21.5)
.846
Latchdown Position
(7.5)
.295
COM
1
L (-)
(2.8) Typ
.110
(5.08) Typ
.200
LB16CKW01-C
Single pole models do not have terminals 4, 5, & 6.
Rectangular
Single & Double Pole
(1.8)
.071
(1.2) x (2.0) Typ
.047 x .079
(0.5) Typ
.020
NC
NO
3
2
L (+)
6
5
(13.2)
.520
(17.8)
.701
(15.8)
.622
(2.54) Typ
.100
(19.4)
.764
(1.0)
.039
(24.0)
.945
(3.2)
.126
(22.5)
.886
Latchdown Position
(7.5)
.295
COM
1
L (-)
4
(5.08) Typ
.200
(22.0)
.866
(2.8) Typ
.110
LB26RGW01-C
Single pole models do not have terminals 4, 5, & 6.
03-07
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
