Distinctive Characteristics
Square or rectangular models.
Combination of PCB mountability and short body allows use
in compact applications.
Small behind panel dimension for snap-in
mounting in tight spaces.
Snap-acting contact mechanism provides
sensitive actuation with audible feedback;
quick-make, quick-break characteristic
limits arcing and prolongs electrical life.
Latchdown mechanism, independent of
switching mechanism, gives visible and
tactile indication of circuit status.
Terminals are epoxy sealed to lock out flux,
solvents, and other contaminants.
Momentary and alternate action circuits available
in the same space-saving body size.
Illuminated models available and shown in 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
General Specifications
Electrical Capacity (Resistive Load)
Power Level (code W):
Logic Level (code G):
5A @ 125/250V AC or 5A @ 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;
200,000 operations minimum for alternate action
10,000 operations minimum for silver;
100,000 operations minimum for silver with resistive load of 3A @ 125V AC
200,000 operations minimum for gold
Single Pole: 1.57N for Square & 1.9N for Rectangular
Double Pole: 2.55N for Square & 3.1N for Rectangular
Break before make
Pretravel .067” (1.7mm); Overtravel .024” (0.6mm); Total Travel .091” (2.3mm)
Materials & Finishes
Housing/Bezel:
Snap-in Frame:
Movable Contactor:
Movable Contacts:
Stationary Contacts:
Terminals:
Base:
Glass fiber reinforced polyamide (UL94V-0)
Stainless steel
Phosphor bronze
Silver alloy or copper with gold plating
Silver alloy or copper with gold plating
Phosphor bronze with silver or gold plating
Glass fiber reinforced liquid crystal polymer (UL94V-0)
Environmental Data
Operating Temp Range:
Humidity:
Vibration:
Shock:
–20°C through +70°C (–4°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)
Installation
Cap Installation Force:
Soldering Time & Temp:
Cleaning:
7.55N (1.70 lbf) maximum downward force on cap
Wave Soldering (PC version): See Profile A in Supplement section.
Manual Soldering: See Profile A in Supplement section.
These devices are not process sealed. Hand clean locally using alcohol based solution.
Standards & Certifications
Flammability Standards:
UL & C-UL Recognized:
R
CSA Certified:
UL94V-0 housing/bezel of GFR polyamide & base of GFR liquid crystal polymer
All single & double pole models recognized at 5A @ 125/250V AC or 0.014A @ 28V DC;
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 single & double pole models certified at 5A @ 125/250V AC or 5A @ 30V DC or
0.4VA maximum @ 28V AC/DC maximum; CSA File No. 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
TYPICAL SWITCH ORDERING EXAMPLE
UB
1
5
SK
G
03
N
C
POLES
1
2
SPDT
DPDT
MOUNTING TYPES
PCB Mounting
SK
RK
KK
Square
Rectangular
Square
Rectangular
Rectangular with
Side Barriers
01
TERMINALS
Solder Lug (for
Snap-in Mounting)
B
C
E
F
CAP COLORS
A
Black
White
Red
Yellow
Green
03
Straight PC
* Snap-in Mounting
NK
NBK
CIRCUITS
5
6
ON
ON
(ON)
ON
( ) = Momentary
Alternate Action
with Latchdown
CONTACTS & RATINGS
W
G
Silver Rated 5A
@ 125/250V AC
Gold Rated 0.4VA max
@ 28V AC/DC max
* Standard with Solder
Lug terminals
G
Blue
Note: Insert Cap with
clear lens and
colored filter
available;
see Illuminated
Pushbuttons
section
DESCRIPTION FOR TYPICAL ORDERING EXAMPLE
UB15SKG03N-C
Red Cap
Gold Contacts with 0.4VA Rating
Square with PCB Mounting
SPDT ON-(ON) Circuit
Straight PC Terminals
IMPORTANT:
Switches are supplied without UL, C-UL, & CSA
markings 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
03-07
POLES & CIRCUITS
Plunger Position
( ) = Momentary
Normal
Pole
SP
DP
Model
UB15
*UB16
UB25
*UB26
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
Throw & Schematics
Note: Switch is marked with NC, NO, COM, L+ & L–
even though nonilluminated models have no
lamp terminals.
SPDT
3
1
COM
NO
6
1
NC
COM
2
NO
4
NC
COM
5
NO
DPDT
3
NC 2
* When in latchdown position for the alternate circuit, cap position is .039” (1.0mm) above the housing.
MOUNTING TYPES & SHAPES
PCB Mounting
SK
Square
(5.08)
.200
3
(5.08) Typ
.200
6
RK
3
2
1
Rectangular
(7.62)
.300
3
2
1
6
(7.62) Typ
.300
3
2
1
(5.08) Typ
.200
5
4
(5.08) Typ
.200
(5.08) Typ
.200
5
4
2
1
(5.08) Typ
.200
C
L
(1.2) Dia Typ
.047
C
L
(1.2) Dia Typ
.047
C
L
(1.2) Dia Typ
.047
C
L
(1.2) Dia Typ
.047
Single Pole
Double Pole
Snap-in Mounting (Solder Lug)
Single Pole
Double Pole
KK
Square
with Built-in Bezel
NK
Rectangular
with Built-in Bezel
NBK
Rectangular with Built-in
Side Barriers
(16.2)
.638
(16.2) Sq
.638
(22.4)
.882
Snap-in Mounting with Solder Lug terminals is the standard combination. Panel Thickness: .039 ~ .126” (1.0 ~ 3.2mm)
CONTACT MATERIALS & RATINGS
W
G
Silver Contacts
Power Level
5A @ 125V AC & 250V AC
Gold Contacts
Logic Level
0.4VA maximum @ 28V AC/DC maximum
Complete explanation of operating range in Supplement section.
TERMINALS
01
Solder Lug
(1.6)
.063
(0.2)
.008
(5.0)
.197
03
Straight PC
(2.0)
.079
(0.8)
.032
Thk = (0.5)
.020
(0.2)
.008
(4.0)
.157
(1.0)
.039
Thk = (0.5)
.020
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
03-07
CAPS & COLORS
Colors Available:
AT4073 Square
Opaque
AT4116 Rectangular
Opaque
(3.0)
.118
(12.0) Sq
.472
(12.0)
.472
(17.0)
.669
(3.0)
.118
A
B
C
Black
White
Red
E
F
G
Yellow
Green
Blue
Material: Polycarbonate
Finish: Glossy
TYPICAL SWITCH DIMENSIONS
Square • PCB Mount
Single & Double Pole
(0.5)
.020
3
N.C.
L+
6
N.C.
(12.0) Sq
.472
(0.5) Typ
.020
(10.0)
(4.0)
.394
.157
Latchdown Position
2
N.O.
COM
5
N.O.
COM
L-
(5.08) Typ
.200
1
4
(15.24) Sq
.600
(2.5)
.098
(1.0)
.039
(1.0) Typ
.039
(5.08) Typ
.200
UB15SKG03N-C
Single pole models do not have terminals 4, 5, & 6.
Rectangular • PCB Mount
Single & Double Pole
(0.5)
.020
3
N.C.
L +
(12.0)
.472
(15.24)
.600
(17.0)
.669
(2.5)
.098
(1.0)
.039
(0.5) Typ
.020
(4.0)
.157
Latchdown Position
(10.0)
.394
6
N.C.
2
N.O.
COM.
5
N.O.
COM
L -
(5.08) Typ
.200
1
4
(20.32)
.800
(7.62) Typ
.300
(1.0) Typ
.039
UB26RKG03N-E
Single pole models do not have terminals 4, 5, & 6.
Square • Snap-in Mount • Built-in Bezel
Single & Double Pole
(1.4)
.055
(0.8) x (1.6) Typ
.032 x .063
3
N.C.
L+
6
N.C.
(12.0) Sq
.472
(0.5) Typ
.020
(10.0)
(5.0)
.394
.197
Latchdown Position
2
N.O.
COM
5
N.O.
COM
L-
1
4
(5.08) Typ
.200
(15.8)
.622
(17.8) Sq
.701
(2.5)
.098
(1.0)
.039
(2.0) Typ
.079
(5.08) Typ
.200
UB25KKW01N-C
Single pole models do not have terminals 4, 5, & 6.
Rectangular • Snap-in Mount • Built-in Bezel
Single & Double Pole
(1.4)
.055
(0.8) x (1.6) Typ
.032 x .063
3
L +
6
N.C.
(12.0)
.472
(17.8)
.701
(0.5) Typ
.020
(10.0)
(5.0)
.394
.197
Latchdown Position
N.C.
2
N.O.
COM.
5
N.O.
COM
L -
1
4
(5.08) Typ
.200
(15.8)
.622
(17.0)
.669
(24.0)
.945
(2.5)
.098
(1.0)
.039
(7.62) Typ
.300
(22.0)
.866
(2.0) Typ
.079
UB26NKW01N-F
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
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