Series LB
Toggles
Standard Size Pushbuttons
Rockers
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.
Pushbuttons
Programmable Illuminated PB
Other Ratings
D
Contact Resistance: Insulation Resistance: Dielectric Strength: Mechanical Life:
Keylocks
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)
Materials & Finishes
Slides
Housing: Snap-in Frame: Movable Contact: Stationary Contacts: Base: Switch Terminals: Lamp 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 Brass with silver plating
Rotaries
Environmental Data
Tactiles
Operating Temperature Range:
Humidity: Vibration: Shock: Sealing:
–25°C through +50°C (–13°F through +122°F) for Illuminated –25°C through +70°C (–13°F through +158°F) for Nonilluminated 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.
Tilt
Touch
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.
Indicators
Standards & Certifications
Flammability Standards: UL:
CSA:
Supplement
UL94V-0 housing & base File No. E44145 All models recognized at 3A @ 125V or 250V AC or 0.4VA @ 28V AC/DC maximum. Add “/U” to end of part number to order UL mark on switch. Add “/CUL” to end of part number to order cULus mark on switch. File Nos. 023535_0_000 All models certified at 3A @ 125V or 250V AC or 0.4VA @ 28V AC/DC maximum. Add “/C” to end of part number to order CSA mark on switch.
Accessories
D46
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Standard Size Pushbuttons
Series LB
Toggles
Spot illumination available in single and bicolor LEDs. Choice of super bright LEDs in white, green, and blue in addition to standard or bright red, amber, and green LEDs. 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 indicators available.
D
Actual Size
Snap-in Mount
Page D46
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D47
Supplement
Panel Seal
Page D57
Accessories
Indicators
Touch
Tilt
Tactiles
Slides
Rotaries
Keylocks
Programmable Illuminated PB
Pushbuttons
Carefully designed light diffusion and filtering system produces bright, full surface illumination with front panel relamping.
Rockers
Distinctive Characteristics
Series LB
Toggles
Standard Size Snap-in Pushbuttons
TYPICAL SWITCH ORDERING EXAMPLE
Toggles
Rockers
Pushbuttons
P oles
1 SPDT DPDT 6 5 2
Circuits
ON ON (ON) ON S C R ( ) = Momentary Alternate Action with Latchdown
Shapes
Square Round Rectangular K G
Housing
Black Gray
Incandescent Lamp Used with Solid Cap 05 12 No Code 5-volt 12-volt Nonilluminated BJ CJ EJ FJ GJ
Solid Cap: Lens/Filter Colors White/Clear Red/Clear Yellow/Clear Green/Clear Blue/Clear Insert Cap: Lens/Filter Colors JB JC JE *JF *JG Clear/White Clear/Red Clear/Yellow Clear/Green *JF & JG not suitable with neon. Clear/Blue
Programmable Illuminated PB
D
D
Contacts & Terminals
W01 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* Incandescent or Neon Used with Insert Cap 01 05 12 No Code 110-volt Neon 5-volt Incandescent 12-volt Incandescent Nonilluminated
Keylocks
G01
IMPORTANT:
Rotaries
Switches are supplied without UL, cULus, & CSA markings unless specified. Specific models & ratings noted on General Specifications page.
* Wire harness & cable assemblies offered only in Americas 5C 5D 5F DESCRIPTION FOR TYPICAL ORDERING EXAMPLE
Bright LED Used with LED Cap Colors Red Amber Green 05 12 24 Resistor No Code No Resistor 5-volt 12-volt 24-volt JB JC JD JF
LED Cap: Lens/Diffuser Colors Clear/Red Clear/Amber
Tactiles Slides
Slides
Clear/White
Tactiles
Clear/Green
Tilt
6F 6G Red, 12-volt, Bright LED with Resistor
Touch
Green Blue LED in Spot Illuminated Cap Spot Illuminated Cap Colors A B C F Black Red Green Nonilluminated Cap Colors A B C E Black White Red Yellow
D49
Indicators Supplement Accessories Touch
Clear Cap with Red Diffuser 1C 1D Square Shape Black Housing 1F CF
Red Single Color Amber Single Color Green Single Color Red/Green Bicolor Nonilluminated
Indicators
SPDT ON-(ON) Circuit Silver Contacts Rated 3A @ 125/250V AC; Solder Lug/Quick Connect Terminals
White
Available in Square and Round only.
Accessories
No Code
Nonilluminated
F G H
Green Blue Gray
Supplement
D48
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Tilt
LB15SKW01-5C12-JC
Super Bright LED Used with LED Cap 6B White JB
LED Cap: Lens/Diffuser Colors Clear/White
Rotaries
Keylocks
Programmable Illuminated PB
Pushbuttons
Lamps
Cap Types & Colors
Rockers
LB
1
5
S
K
W01
5C 12
JC
Series LB
Toggles
Standard Size Snap-in Pushbuttons
P OLES & CIRCUITS
Plunger Position ( ) = Momentary
Rockers
Connected Terminals Normal Down
Throw & Switch/Lamp Schematics Notes: Switch is marked with NC, NO, COM, L+, L–. Lamp circuit is isolated and requires an external power source.
1 COM L (+) 3 1 COM NO 6 NC 2 NO 4 NC COM L (+) 3 NC 2 5 NO (-) L (-) L
Pole
Model LB15 *LB16 LB25 *LB26
Normal
Down
Pushbuttons
SP
ON ON ON ON
(ON) ON (ON) ON
1-3
1-2
SPDT
Programmable Illuminated PB
DP
1-3 4-6
1-2 4-5
DPDT
D
* 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
Keylocks
(16.2) .638 (11.5) .453 (16.2) Sq .638 (1.5) R .059 (22.4) .882
Rotaries
Slides
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)
Tactiles
HOUSING
Housing Colors Available:
K
Black
G
Gray
C ONTACT MATERIALS, RATINGS & TERMINALS W01
Silver Contacts Gold Contacts Power Level 3A @ 125V AC & 250V AC Logic Level 0.4VA max. @ 28V AC/DC max. Solder Lug/Quick Connect Optional PCB adaptors (2.0) AT711 & AT712 available; .079 illustrated in “Optional Accessories” immediately following “Typical Switch Dimensions.”
Epoxy Seal (7.5) .295 (2.8) .110 (1.2) .047
Touch
Tilt
G01
Thk = (0.5) .020
Indicators
Complete explanation of operating range in Supplement section.
INCANDESCENT & NEON LAMP CODES & SPECIFICATIONS
AT607 & AT607N
AT607 Incandescent 5-volt or 12-volt; AT607N Neon 110-volt
Accessories
05
V I 5V AC 115mA
12
12V AC 60mA
01 *
110V AC 1.5mA 10,000
Voltage Current Endurance
T-1 Bi-pin
The electrical specifications shown are determined at a basic temperature of 25°C. Lamp circuit is isolated and requires external power source.
Supplement
Avg. Hours
10,000 –25°C ~ +50°C
www.nkk.com
* Recommended Resistors for Neon:
33K ohms for 110V AC; 100K ohms for 220V AC
Ambient Temp. Range
D50
Standard Size Snap-in Pushbuttons
LED COLORS & SPECIFICATIONS
Series LB
Toggles
The electrical specifications shown are determined at a basic temperature of 25°C. LED circuit is isolated and requires external power source. Polarity marks are on the switch. If the source voltage exceeds the rated voltage, a ballast resistor is required. The resistor value can be calculated by using the formula in the Supplement section. Additional lamp detail is shown in the Accessories & Hardware section. Bright LED without Resistor AT635 LEDs are colored in OFF state. Color Codes Red Amber Green
Forward Peak Current Continuous Forward Current Forward Voltage Reverse Peak Voltage
IFM IF VF VRM ∆IF
30mA 20mA 1.9V 5V
30mA 20mA 2.0V 5V 0.42mA/°C –25° ~ +50°C
30mA 20mA 2.1V 5V
D
(+)
(-)
Current Reduction Rate Above 25°C Ambient Temperature Range Bright LED with Resistor
T-1 ⁄ Bi-pin
12
AT627 with Resistor
Red Color Codes:
Amber
Green
Resistor Codes
Forward Peak Current Continuous Forward Current Forward Voltage Reverse Peak Voltage Current Reduction Rate Above 25°C
T-1 Bi-pin
IFM IF VF VRM ∆IF
— 52mA 5V 4V
— 26mA 12V 8V 0.50mA/°C –25° ~ +50°C
— 13mA 16V 24V
Super Bright Single Element LED AT625G Blue AT631B White AT632F Green
ELECTROSTATIC SENSITIVE DEVICES
ATTENTION
6B
Color White 30mA 20mA 3.6V 5V IFM IF VF VRM ∆IF
6F
Green 30mA 20mA 3.5V 5V 0.50mA/°C –25° ~ +50°C
6G
Blue 20mA 3.6V 5V 30mA
Continuous Forward Current Forward Voltage Reverse Peak Voltage
(+) (-)
Current Reduction Rate Above 25°C Ambient Temperature Range
T-1 Bi-pin
No Code
No Lamp
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Supplement
Accessories
Indicators
Forward Peak Current
Touch
Tilt
AT627 5-volt 4-element (+) with Resistor
(-)
AT627 12-volt 4-element with Resistor
(+)
(-)
AT627 24-volt (+) 4-element with Resistor
(-)
Tactiles
Ambient Temperature Range
Slides
Rotaries
5C
5D
5F
05
12
24
Keylocks
Programmable Illuminated PB
5C
5D
5F
No Code
Red
No Resistor Green
Amber
Pushbuttons
Rockers
Series LB
Toggles
Standard Size Snap-in Pushbuttons
CAP TYPES & COLOR COMBINATIONS
Color Codes:
Rockers
B White
C Red
D Amber
E Yellow
F Green
G Blue
J Clear
Solid Cap for Incandescent Lamp & Nonilluminated Lens/Filter Colors Available: AT476 Square
(13.2) Sq .520 (3.5) .138 (19.0) Dia .748
AT4012 Round
(4.5) .177 (5.5) .217 (13.2) .520
AT4026 Rectangular
(19.4) .764 (5.0) .197 (6.0) .236
Pushbuttons
Translucent Colored Lens
BJ CJ
FJ GJ
(6.5) .256
Programmable Illuminated PB
Transparent Clear Filter
D
EJ
Material: Polycarbonate Finish: Glossy Lamp AT607
Insert Cap for Incandescent or Neon Lamp & Nonilluminated Lens/Filter Colors Available: AT477 Square
(13.2) Sq .520 (3.5) .138 (19.0) Dia .748
AT4013 Round
(4.5) .177 (5.5) .217 (13.2) .520
AT4027 Rectangular
(19.4) .764 (5.0) .197 (6.0) .236
Keylocks
JB JC
JF JG
Transparent Clear Lens
Rotaries
(6.5) .256
Translucent Colored Filter
JE
JF and JG not suitable with neon lamp. Material: Polycarbonate Finish: Glossy Lamp AT607 or 607N
Slides
Cap for Bright LED without Resistor Lens/Diffuser Colors Available: AT4176 Square
(3.5) .138 (6.5) .256
Tactiles
AT4178 Round
(19.0) Dia .748 (4.5) .177 (13.2) .520
AT4177 Rectangular
(19.4) .764 (5.0) .197 (5.5) .217 (6.0) .236
JB JC
(13.2) Sq .520
Transparent Clear Lens
Tilt
JD JF
Translucent Colored Diffuser Bright LED AT635
Touch
Material: Polycarbonate
Finish: Glossy
Cap for Bright LED with Resistor
Indicators
Lens/Diffuser Colors Available:
AT4162 Square
(3.5) .138 (19.0) Dia .748
AT4164 Round
(4.5) .177 (13.2) .520
AT4163 Rectangular Transparent Clear Lens
(19.4) .764 (5.0) .197 (6.0) .236
JB JC JD JF
Accessories
(13.2) Sq .520
(6.5) .256
(5.5) .217
Translucent Colored Diffuser Bright LED AT627
Supplement
Material: Polycarbonate
D52 www.nkk.com
Finish: Glossy
Standard Size Snap-in Pushbuttons
CAP TYPES & COLOR COMBINATIONS
Color Codes: A Black B White C Red D Amber E Yellow F Green G Blue
Series LB
H Gray J Clear
Rockers Toggles
Cap for Super Bright LEDs
JB
Clear Lens White Diffuser
(13.2) Sq .520
AT4129 Square
(3.5) .138 (19.0) Dia .748
AT4128 Round
(4.5) .177 (5.5) .217 (13.2) .520
AT4130 Rectangular
(19.4) .764 (5.0) .197 (6.0) .236
Transparent Clear Lens Translucent White Diffuser LEDs AT625 AT631 AT632
(6.5) .256
Spot Illuminated Cap with LED The electrical specifications shown are determined at a basic temperature of 25°C. LED circuit is isolated and requires an external power source. Single color LEDs are colored in OFF state; bicolor LEDs are translucent white in OFF state. Polarity marks are on the switch. If the source voltage exceeds the rated voltage, a ballast resistor is required. The resistor value can be calculated by using the formula in the Supplement section. Additional lamp detail is shown in the Accessories & Hardware section. LED Specifications Single Color LED with 1 Element LED factory assembled in Spot Illuminated Caps Not Available Separately
(+) (-) (+)
D
Bicolor LED with 2 Elements
(-)
Single Color
Bicolor
1C
Red 10mA 8mA 1.9V 5V
1D
Amber 30mA 24mA 2.0V 5V
1F
Green 30mA 24mA 2.1V 5V 0.40mA/°C –25° ~ +50°C
CF
30/25mA 20mA — 0.43/0.38mA/°C
Tactiles Slides Rotaries Supplement Accessories Indicators Touch Tilt
Red/Green
Forward Peak Current Continuous Forward Current Forward Voltage Reverse Peak Voltage Current Reduction Rate Above 25°C Ambient Temperature Range
IFM IF VF VRM ∆IF
2.0/2.2V
0.13mA/°C 0.40mA/°C
Cap Colors Available:
A B
C F
(13.2) Sq .520
(4.0) .157 (2.0) .079
(5.0) .197
AT480 Square
(3.5) .138 (19.0) Dia .748 (5.0) .197
AT4016 Round
(4.5) .177 (5.5) .217
Cap with Window
Material: Polycarbonate Finish: Glossy
(6.5) .256
(2.0) (6.0) .079 .236
Factory Assembled LED; Not Available Separately
When ordering spot illuminated cap separately, LED color must be specified. Examples: AT480CA (red LED, black cap); AT4016CFB (red/green bicolored LED, white cap) Cap Colors Available: Cap for Nonilluminated AT484 Square AT4017 Round
(3.5) .138 (19.0) Dia .748 (4.5) .177 (13.2) .520
AT4030 Rectangular
(19.4) .764
A B C
E F G
H
(13.2) Sq .520
(6.5) .256
(5.5) .217
(5.0) .197 (6.0) .236
Cap No Lamp
Material: Polycarbonate
Finish: Glossy
www.nkk.com D53
Keylocks
Programmable Illuminated PB
Pushbuttons
Material: Polycarbonate Finish: Glossy
Series LB
Toggles
Standard Size Snap-in Pushbuttons
TYPICAL SWITCH DIMENSIONS
Square
Rockers
Single & Double Pole
(1.8) .071 (1.2) x (2.0) Typ .047 x .079 (0.5) Typ .020 (13.2) Sq .520 (2.54) Typ .100 (1.0) .039
NC NO 3 2 L (+) 6 5
Pushbuttons
(15.8) Sq .622
COM
1 L (-)
4
Programmable Illuminated PB
D
LB15SKW01-12-CJ
(17.8) Sq .701
(3.2) .126
(21.5) .846 Latchdown Position
(7.5) .295
(2.8) Typ .110 (5.08) Typ .200
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
Keylocks
(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 (-)
Rotaries
(2.8) Typ .110 (5.08) Typ .200
LB16CKW01-12-CJ
Slides
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
Tactiles
(13.2) .520 (17.8) .701
(15.8) .622
(2.54) Typ .100
COM
1 L (-)
4
Tilt
(19.4) .764
(1.0) .039 (24.0) .945 (3.2) .126 (22.5) .886 Latchdown Position (7.5) .295
(5.08) Typ .200 (22.0) .866
(2.8) Typ .110
Touch
LB26RGW01-12-CJ
Single pole models do not have terminals 4, 5, & 6.
OPTIONAL ACCESSORIES
Indicators
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
Accessories
(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
Supplement
(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. D54 www.nkk.com
Standard Size Snap-in Pushbuttons
OPTIONAL ACCESSORIES
Barriers
(23.5) .925 (4.3) Typ .169 (5.2) .205
Series LB
Toggles
Cutouts for More Than 1 Switch
(19.2) .756 A
End Position
(20.0) .787
(15.0) .591
(16.2) .638
Center Position
Material: Polyamide
(1.19) .047
(1.19) .047
(19.2) .756
Square A = .752” (19.1mm) x Number of Switches + .051” (1.3mm) Rectangular A = .996” (25.3mm) x Number of Switches + .051” (1.3mm)
D
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
(14.0) Sq .551 (17.9) Sq .705
Material: Polyamide
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
(16.2) Sq .638 (39.0) Min* 1.535
AT4171 (10.5) .413 (20.5) .807
(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)
www.nkk.com D55
Supplement
Accessories
Materials: Cover: Clear Polycarbonate Base: Black GFR Polyamide Coil Spring: Stainless Steel
180°
Indicators
Touch
(20.4) .803
(7.5) .295
(14.2) .559
(17.9) .705
Tilt
Tactiles
Slides
Rotaries
Keylocks
Programmable Illuminated PB
Pushbuttons
Rockers
AT497 End
AT498 Center
Series LB
Toggles
Standard Size Snap-in Pushbuttons
O PTIONAL ACCESSORIES
Protective Guard
AT4057 Rectangular Protective Guard Opens 90° Closes manually
(26.0) 1.024
Rockers
(10.0) .394
Pushbuttons
(14.0) .551 (21.0) .827
Cap Height When Assembled (8.0) .315 (24.15) .951
Programmable Illuminated PB
D
Material: Polyamide
Protective Guards reduce depth of switch behind panel by .020” (0.5mm). Spring Loaded Protective Guard
AT4172 Rectangular Protective Guard
(10.5) .413 (20.5) .807 Cap Height When Assembled (17.9) .705 (7.1) .280
Keylocks
(22.4) .882
Rotaries
(16.2) .638
(24.6) .969
(26.6) 1.047
(7.5) .295
(20.4) .803
(24.1) .949
AT4172 (10.5) .413 (20.5) .807
(39.0) Min* 1.535
Opens 180° Closes automatically Materials: Cover: Clear Polycarbonate Base: Black GFR Polyamide Coil Spring: Stainless Steel
180°
Slides
Tactiles
(26.6) 1.047 (N) = Number of switches
(26.6) 1.047 (N) * Minimum dimension allows opening of cover to 180°
Recommended Panel Thickness: .039” ~ .106” (1.0mm ~ 2.7mm) Dust Covers
Tilt
AT4002 Round
Touch
AT4001 Square
AT4011 Rectangular
Indicators
(21.0) Dia .827
(15.0) Sq .591
(16.5) .650
(16.5) .650 (24.0) .945
Accessories
Supplement
Cap Height When Assembled (7.3) .287
Cap Height When Assembled (2.5) .098 (21.8) Dia .858 (30.0) Dia 1.181 (7.3) .287
(2.5) .098 (24.0) Sq .945
(22.7) .894
(30.2) 1.189
Materials: PVC with polyethylene gasket; PVC loses pliability below 0°C (32°F). Dust Covers reduce depth of switch behind panel by .020” (0.5mm). D56 www.nkk.com
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