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Standard Size Panel Seal 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 Panel Seal Pushbuttons
Series LB
General Specifications
Electrical Capacity (Resistive Load)
Power Level (silver): Logic Level (gold): 3A @ 125V AC or 3A @ 250V AC 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 5.39N Nonshorting (break-before-make) Momentary: Pretravel .059" (1.5mm); Overtravel .059" (1.5mm); Total Travel .118" (3.0mm) Maintained: Pretravel .087" (2.2mm); Overtravel .031" (0.8mm); Total Travel .118" (3.0mm)
Materials & Finishes
Housing: O-ring: Inner Seal: Movable Contact: Stationary Contacts: Base: Terminals:
Glass fiber reinforced polyamide (UL94V-0) Nitrile butadiene rubber Silicone rubber 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:
-25C through +70C (-13F through +158F) Note: When used with a polyvinyl chloride splash cover, the lowest limit is 0C (32F) 90 ~ 95% humidity for 96 hours @ 40C (104F) 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) IP65 of IEC60529 standard (similar to NEMA 4 & 13)
Installation
Mounting Torque: Cap Installation Force: Quick Connect Force: Soldering Time & Temperature:
1.96Nm (17.35 lb*in) maximum 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 Panel Seal Pushbuttons
TYPICAL SWITCH ORDERING EXAMPLE
Series LB CJ
LB
POLES
1 2 SPDT DPDT
1
6
SHAPE
W Round
W
K
W01
CONTACTS & TERMINALS
W01
Silver Contacts Rated 3A @ 125/250V AC and Solder Lug/Quick Connect Terminals Gold Contacts Rated 0.4VA @ 28V AC/DC and Solder Lug/Quick Connect Terminals
G01
CIRCUITS
5 6 ON ON (ON) ON ( ) = Momentary Alternate Action with Latchdown K G
HOUSING
Black Gray BJ CJ EJ FJ GJ
CAP COLORS
White Red Yellow Green Blue
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
LB16WKW01-CJ
Red Cap
Round Shape Black Housing
SPDT ON-ON Circuit Silver Contacts Rated 3A @ 125/250V AC; Solder Lug/Quick Connect Terminals
NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com
03-07
Standard Size Panel Seal 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 L (+) 3 1 COM NO 6 NC 2 NO 4 NC COM L (+) 3 NC 2 5 NO (-) L (-) L
SPDT DPDT
* When in latchdown position for the alternate circuit, cap position is .039" (1.0mm) above the built-in bezel.
SHAPE & PANEL CUTOUT W
.866" (22.0mm) Round
(1.7) .067 (10.5) .413
Recommended Panel Thickness: .039" ~ .157" (1 ~ 4mm) Recommended Panel Thickness with Splash Cover: .039" ~ .138" (1 ~ 3.5mm) Overtightening the mounting nut AT074 may damage the switch housing.
(22.0) Dia .866
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
Thk = (0.5) .020
Complete explanation of operating range in Supplement section.
CAP COLORS
Lens/Filter Colors Available:
(19.0) Dia .748
BJ CJ
White Red
EJ FJ
Yellow Green
GJ
Blue
AT4054
(5.1) .201
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 Panel Seal Pushbuttons
TYPICAL SWITCH DIMENSIONS
Panel Seal Single & Double Pole
(5.5) .217 M22 P1 (1.2) x (2.0) Typ .047 x .079 (0.5) Typ .020
NC NO
Series LB
3 2
L (+)
6 5 4
(15.8) Sq .622
COM
(2.54) Typ .100 (1.8) .071 (1.0) .039 (3.2) .126
1
L (-)
Keyway (12.0) .472 (21.5) .846 Latchdown Position (7.5) .295 (2.8) Typ .110
(19.0) Dia .748 (25.0) Dia .984
(5.08) Typ .200
LB25WKW01-CJ
Single pole models do not have terminals 4, 5, & 6.
OPTIONAL ACCESSORIES
PCB Adaptors AT711 Single Pole * Straight PC Terminals
(0.3) Typ .012
NC NO COM L L (+) (-) NC NO COM
AT712
(5.08) .200
Double Pole * Straight PC Terminals
(0.3) Typ .012
NC NO L L (+) (-) NC NO COM
(5.08) Typ .200 (15.8) Sq .622
(15.8) Sq .622
(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.
AT9410 Splash Cover for Panel Seal
Lid
Materials: Lid: Polyvinyl chloride (PVC loses pliability below 0C/32F) Base: Polyethylene O-ring: NBR Recommended Panel Thickness: .039" ~ .138" (1.0mm ~ 3.5mm)
Base O-ring Supplied with Panel Seal Switch O-ring Supplied with AT9410 Splash Cover
(21.0) Dia .827 (10.6) .417
(31.3) Dia 1.232
(7.8) .307
(3.0) .118
(1.6) .063 (23.0) Dia .906
(22.0) Dia .866 (31.3) Dia 1.232 (0.5) .020
NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com
03-07
Standard Size 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.
NKK 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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