Short Body Pushbuttons
Series YB
Distinctive Characteristics
Combination bezel-barrier is an integral part of the switch and
prevents accidental actuation.
Unique thermoplastic elastomer seal inside caps plus
rolled sleeve of nitrile butadiene rubber at joining
of housing and inner case, all for added protection
to interior mechanism.
Dust and oil tight as well as splashproof panel seal
models qualify to IP65 of IEC60529 Standards
(similar to NEMA 4 and 13). Panel seal models
provided with exterior o-ring.
Distinctive design of snap-action contacts for shock
resistance, long life, and sensitive actuation.
High density design to give behind panel depth of
less than one inch.
Terminals are epoxy sealed to lock out flux, dust,
solvents, and other contaminants.
Latchdown for indication of circuit status, plus audible, tactile
feedback with smooth, responsive operation.
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
08-08
Short Body Pushbuttons
Series YB
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 of operating range 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
Single pole: 1.47N for nonsealed; 1.67N for sealed
Double pole: 2.75N for nonsealed; 2.94N for sealed
Nonshorting (break-before-make)
Pretravel .059” (1.5mm); Overtravel .059” (1.5mm); Total Travel .118” (3.0mm)
Materials & Finishes
Housing/Bezel:
Snap-in Frame:
Base:
Movable Contactor:
Movable Contacts:
Stationary Contacts:
Terminals:
Glass fiber reinforced polyamide (UL94V-0)
Stainless steel
Diallyl phthalate resin (UL94V-0)
Phosphor bronze with silver or gold plating
Silver alloy with silver plating or brass with gold plating
Silver alloy or copper with gold plating
Phosphor bronze with tin plating
Environmental Data
Operating Temp Range:
Humidity:
Vibration:
Shock:
Sealing:
–25°C through +70°C (–13°F through +158°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)
IP65 of IEC60529 standard for panel seal models
Installation
Mounting Torque:
Soldering Time & Temperature:
0.785Nm (6.95 lb
•
in) maximum
Manual Soldering: See Profile A in Supplement section.
Standards & Certifications
Flammability Standards:
UL & C-UL Recognized:
R
CSA Certified:
UL94V-0 housing & base
All solder lug models recognized at 3A @ 125/250V 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 solder lug models certified at 3A @ 125/250V 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
08-08
Short Body Pushbuttons
TYPICAL SWITCH ORDERING EXAMPLE
Series YB
FB
YB
POLES
1
2
SPDT
DPDT
1
5
SHAPES
Bushing Mounting
S
C
R
K
M
N
Square
Round
Rectangular
Square
Round
Rectangular
C
K
W
01
CONTACT MATERIALS
& RATINGS
W
G
Silver
Rated 3A @ 125V AC
Gold
Rated 0.4VA max.
@ 28V AC/DC max.
Snap-in Mounting
CIRCUITS
5
6
ON
ON
(ON)
ON
( ) = Momentary
Alternate Action
with Latchdown
TERMINALS
01
03
Solder Lug/.110” (2.8mm)
Quick Connect
Straight PC
HOUSING
K
Black only
BB
CAP COLORS
White/White
Red/White
Yellow/White
Green/White
Blue/White
CB
EB
FB
GB
PANEL SEAL
No
Without Panel Seal
Code
W
With Panel Seal
(Bushing Mount only)
IMPORTANT:
Switches are supplied without UL,
C-UL, & CSA markings unless
specified. Specific models & rat-
ings noted on General Specifica-
tions page.
Note: Cap with clear
lens and colored
insert available;
see Illuminated
Pushbuttons section
DESCRIPTION FOR TYPICAL ORDERING EXAMPLE
YB15CKW01-FB
Round with Bushing Mounting
Black Housing
SPDT ON-(ON) Circuit
Cap with Green Lens
& White Insert
Without Panel Seal
Silver Contacts with 3 Amp Rating
Solder Lug/.110” (2.8mm)
Quick Connect Terminals
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
08-08
Short Body Pushbuttons
POLES & CIRCUITS
Plunger Position
( ) = Momentary
Normal
Pole
SP
DP
Model
YB15
*YB16
YB25
*YB26
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 YB
Throw & Schematics
Switch is marked with NC, NO, COM, L+, L–.
1 (COM)
SPDT
DPDT
3
1 (COM)
3
2
6
2
4
5
* When in latchdown position for the alternate circuit, cap position is .020” (0.5mm) above the built-in bezel.
PANEL SEAL
No Code
Bushing
Mounting
Without Panel Seal
Snap-in
Mounting
W
With Panel Seal
Bushing
Mounting
only
Supplied with
mounting nut
and o-ring AT089.
Supplied with
mounting nut.
SHAPES & MOUNTING TYPES
Bushing Mounting
Snap-in Mounting
S
Square
C
Round
R
Rectangular
K
Square
M
Round
N
Rectangular
Bezel-barrier is an integral part of the switch body.
HOUSING
K
Black
Housing available in black only. The 1-piece body and bezel-barrier have a matte finish.
CONTACT MATERIALS & RATINGS
W
G
Silver Contacts
Gold Contacts
Power Level
Logic Level
3A @ 125/250V AC
0.4VA max. @ 28V AC/DC max.
Complete explanation of operating range in Supplement section.
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
08-08
Short Body Pushbuttons
TERMINALS
01
Solder Lug/
.110” (2.8mm) Quick Connect
Epoxy Seal
(7.3)
.288
Series YB
(2.0)
(2.8)
.079
.110
(1.2)
.047
Thk = (0.5)
.020
03
Straight PC
Epoxy Seal
(0.6) R
.024
(4.4)
.173
(2.8)
.110
3
2
(3.7) Typ
.146
5
6
3
2
(3.7) Typ
.146
(1.2)
.047
Thk = (0.5)
.020
Single Pole
(3.0)
.118
1
(4.85) Typ
.191
(1.6) Dia Typ
.063
Double Pole
4
1
(4.85) Typ
.191
(1.6) Dia Typ
.063
(5.55) Typ
.219
(5.55)
C .219
L
(3.0) Typ
.118
C
L
CAPS & COLORS
Colors Available:
AT3002
Round
(15.0) Dia
.591
(12.2)
.480
(4.0)
.157
BB
CB
EB
FB
GB
White/
White
Red/
White
Yellow/
White
Green/
White
Blue/
White
AT3001
Square
(15.0) Sq
.591
(12.2)
.480
(4.0)
.157
AT3003
Rectangular
(15.0)
.591
(21.0)
.827
(12.2)
.480
(4.0)
.157
Materials:
Lens & Insert: Polycarbonate
Seal/Filter: Thermoplastic Elastomer
TYPICAL SWITCH DIMENSIONS
Square • Bushing Mounting
Single & Double Pole
(9.4)
.370
M15.8 P1
(1.2) x (2.0) Typ
.047 x .079
(0.5) Typ
.020
NO
(3.7)
.146
3
2
NC
L
-+
6
5
4
NO
(9.7)
.382
(2.8) Typ
.110
(15.0) Sq
.591
(18.0) Sq
.709
(10.9)
.429
(7.3)
.288
1
COM
(8.3)
.327
(24.3)
.957
(6.0)
.236
(11.1)
.437
YB15SKW01-CB
Single pole models do not have terminals 4, 5, & 6.
08-08
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
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