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
N KK 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/s2) 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.
N KK 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
P OLES
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
H OUSING
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 specified. 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
N KK 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
C ONTACT 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
N KK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
Standard Size Snap-in Pushbuttons
T YPICAL 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
N KK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
Standard Size Snap-in Pushbuttons
O PTIONAL ACCESSORIES
Barriers AT497 End
End Position
Series LB
AT498 Center
(23.5) .925 (4.3) Typ .169 (5.2) .205
(19.2) .756
Cutouts for More Than 1 Switch
A
(20.0) .787
(15.0) .591
(16.2) .638
Center Position
Square A = .752” (19.1mm) x Number of Switches + .051” (1.3mm)
(1.19) .047 (1.19) .047 (19.2) .756
Material: Polyamide
Rectangular A = .996” (25.3mm) x Number of Switches + .051” (1.3mm)
Protective Guard AT499 Square Protective Guard Opens 90° Closes manually
(10.0) .394 (21.0) .827
(17.0) .669
Cap Height When Assembled (20.0) .787 (8.0) .315
Materials: Cover: Clear Polycarbonate Base: Black GFR Polyamide
(14.0) Sq .551 (17.9) Sq .705
Protective Guards reduce depth of switch behind panel by .020” (0.5mm). Spring Loaded Protective Guard
AT4171 Square Protective Guard Opens 180° Closes automatically
(10.5) .413 (20.5) .807 Cap Height When Assembled
(17.9) .705 (7.1) .280
(18.4) .724
(20.4) .803
(7.5) .295
(14.2) .559
(17.9) .705
(16.2) Sq .638 (39.0) Min* 1.535
AT 4171 (10.5) .413 (20.5) .807
Materials: Cover: Clear Polycarbonate Base: Black GFR Polyamide Coil Spring: Stainless Steel
180°
(20.4) .803 (20.4) .803 (N) * Minimum dimension allows opening of cover to 180°
(N) = Number of switches
Recommended Panel Thickness: .039” ~ .106” (1.0mm ~ 2.7mm)
03-07
N KK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
Standard Size Snap-in Pushbuttons
O PTIONAL ACCESSORIES
Protective Guard AT4057 Rectangular Protective Guard Opens 90° Closes manually
(10.0) .394
Series LB
(14.0) .551 (21.0) .827
Cap Height When Assembled (26.0) 1.024 (8.0) .315 (24.15) .951
Materials: Cover: Clear Polycarbonate Base: Black GFR Polyamide
Protective Guards reduce depth of switch behind panel by .020” (0.5mm). Spring Loaded Protective Guard
AT4172 Rectangular Protective Guard Opens 180° Closes automatically
(10.5) .413 (20.5) .807 Cap Height When Assembled
(17.9) .705 (7.1) .280
(24.6) .969
(26.6) 1.047
(7.5) .295
(20.4) .803
(24.1) .949
Materials: Cover: Clear Polycarbonate Base: Black GFR Polyamide Coil Spring: Stainless Steel Recommended Panel Thickness: .039” ~ .106” (1.0mm ~ 2.7mm)
(16.2) .638
(22.4) .882
180°
AT4172 (10.5) .413 (20.5) .807
(39.0) Min* 1.535
(26.6) 1.047 (N) = Number of switches
(26.6) 1.047 (N) * Minimum dimension allows opening of cover to 180°
N KK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
03-07
Standard Size Snap-in Pushbuttons
OPTIONAL ACCESSORIES
Dust Covers AT4002 Round AT4001 Square AT4011 Rectangular
Series LB
Materials: Lid: Polyvinyl chloride Gasket: Polyethylene
PVC loses pliability below 0°C (32°F.
(21.0) Dia .827
(21.0) Dia .827
(16.5) .650
(16.5) .650 (24.0) .945
Cap Height When Assembled (7.3) .287
(2.5) .098
(21.8) Dia .858
(30.0) Dia 1.181
Cap Height When Assembled (7.3) .287
(2.5) .098
(22.7) .894 (24.0) Sq .945
(30.2) 1.189
Dust Covers reduce depth of switch behind panel by .020” (0.5mm).
PCB Adaptors AT711 Single Pole • Straight PC Terminals
(0.3) Typ .012 (5.08) .200 (15.8) Sq .622
AT712
Double Pole • Straight PC Terminals
(0.3) Typ .012 (5.08) Typ .200 (15.8) Sq .622
NC NO COM L L (+) (-)
NC NO COM
NC NO L L (+) (-)
NC NO COM
(2.54) Typ .100 (1.0) Dia Typ .039 (0.5) .020 (15.0) (4.0) .591 .157 (2.54) Typ .100 (0.74) Typ .029
COM
(2.54) Typ .100 (1.0) Dia Typ .039
(0.5) .020 (15.0) (4.0) .591 .157
(2.54) Typ .100 (0.74) Typ .029 (5.08) .200
(5.08) .200
Note: Order adaptors separately.
N KK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
03-07
Standard Size Snap-in Pushbuttons
ASSEMBLY INSTRUCTIONS
Round & Rectangular Match clip on cap assembly with receptacle inside switch.
N .C .
Series LB
Cut Corner
C
Projection
N .C .
K S 5C -1 5V A C LB 12 0V A A
3 25 A 3
C Projection Notch
Square Match projection (C) on cap assembly with groove (C) inside switch. Panel Seal Bushing Mount Insert switch from the front of the panel with the o-ring between the built-in bezel and the panel. Install mounting nut AT075 (supplied with switch) from the Bezel rear of the panel. O-ring Overtightening mounting nut may damage the switch housing.
N .O .
Rubber Seal
Panel Seal Match projection on cap assembly with notch inside switch.
Snap-in Mount Snap-in clip holds all switches firmly in place. To mount round switch, match the antirotation projection on switch with guide cut in panel. Snap Projection into panel cutout.
Panel
AT109 Cap Extractor
Panel
AT112 Socket Wrench
Mounting Nut
LEGENDS
Easily create and submit your own legends using our new on-line Legend Maker. Visit www.nkkswitches.com For other legend support options, customers may either contact the factory and request the LB Legend Packet, or utilize the general information and basic specifications presented below. Suggested Printable Area for LB Lens
(0.76) Typ .030
Recommended Methods: Laser Etch on clear lens; Screen Print or Pad Print on lens. Epoxy based ink is recommended.
Additional method for legends is engraving the cap. Maximum depth for engraving is .012” (0.3mm) on the cap lens. Enamel paint is recommended to fill the engraved area.
N KK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com 03-07
LM
T AR ST
(11.68) Sq .460 (13.2) Sq .520 (0.76) Typ .030 (17.48) Dia .688 (19.0) Dia .748 (0.76) Typ .030 (17.88) .704 (19.4) .764
(11.68) .460
(13.2) .520
(0.76) Typ .030
Shaded areas are printable areas.
Additional Method
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