LB15CGG01-12-BJ [NKK]
Standard Size Pushbuttons; 标准尺寸按键
| 型号： | LB15CGG01-12-BJ |
| 厂家： | 
NIHON KAIHEIKI INDUSTRY CO. LTD. |
| 描述： | Standard Size Pushbuttons |
| 文件： | 总10页 (文件大小：378K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Series LB
Standard Size Pushbuttons
General Specifications
Electrical Capacity (Resistive Load)
Power Level (silver): 3A @ 125V AC or 3A @ 250V AC or 3A @ 30V DC
Logic Level (gold): 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: 50 milliohms maximum for silver; 100 milliohms maximum for gold
D
Insulation Resistance: 200 megohms minimum @ 500V DC
Dielectric Strength: 1,000V AC minimum between contacts for 1 minute minimum;
1,500V AC minimum between contacts & case for 1 minute minimum
Mechanical Life: 1,000,000 operations minimum for momentary circuit
200,000 operations minimum for maintained circuit
Electrical Life: 100,000 operations minimum
Nominal Operating Force: 4.41N
Contact Timing: Nonshorting (break-before-make)
Travel: Pretravel .059” (1.5mm); Overtravel .059” (1.5mm); Total Travel .118” (3.0mm)
Materials & Finishes
Housing: Glass fiber reinforced polyamide (UL94V-0)
Snap-in Frame: Stainless steel
Movable Contact: Silver alloy or copper with gold plating
Stationary Contacts: Silver alloy or copper with gold plating
Base: Liquid crystal polymer (UL94V-0)
Switch Terminals: Phosphor bronze with silver or gold plating
Lamp Terminals: Brass with silver plating
Environmental Data
Operating Temperature Range: –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)
Humidity: 90 ~ 95% humidity for 96 hours @ 40°C (104°F)
Vibration: 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
2
Shock: 50G (490m/s ) acceleration (tested in 6 right angled directions, with 5 shocks in each direction)
Sealing: Not available for snap-in; see next section for panel seal.
Installation
Cap Installation Force: 3.92N maximum downward force on cap
Quick Connect Force: 52.95N maximum downward force on connector
Soldering Time & Temperature: Manual Soldering: See Profile A in Supplement section.
Standards & Certifications
Flammability Standards: UL94V-0 housing & base
UL: 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.
CSA: 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.
D46
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Standard Size Pushbuttons
Series LB
Distinctive Characteristics
Carefully designed light diffusion and filtering system produces bright,
full surface illumination with front panel relamping.
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.
D
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.
Actual Size
Snap-in Mount Page D46
Panel Seal
Page D57
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D47
Series LB
Standard Size Snap-in Pushbuttons
TYPICAL SWITCH ORDERING EXAMPLE
LB
1
5
S
K
W01
5C 12
JC
Lamps
Cap Types & Colors
Poles
Circuits
Shapes
Housing
Incandescent Lamp Used with Solid Cap
Solid Cap: Lens/Filter Colors
White/Clear
1
2
SPDT
DPDT
5
6
ON
( ) = Momentary
ON ON
(ON)
S
C
R
Square
K
Black
Gray
05
12
5-volt
BJ
CJ
EJ
Round
G
12-volt
Red/Clear
D
D
Rectangular
No
Code
Yellow/Clear
Nonilluminated
Alternate Action
with Latchdown
FJ
Green/Clear
GJ
Blue/Clear
Contacts & Terminals
Incandescent or Neon Used with Insert Cap
Insert Cap: Lens/Filter Colors
Clear/White
Silver Contacts
W01 Rated 3A @ 125/250V AC
Solder Lug/Quick Connect Terminals*
01
05
12
110-volt Neon
JB
JC
5-volt Incandescent
12-volt Incandescent
Clear/Red
Gold Contacts
G01 Rated 0.4VA @ 28V AC/DC
Solder Lug/Quick Connect Terminals*
JE
Clear/Yellow
No
Code
*JF
*JG
Clear/Green
Nonilluminated
IMPORTANT:
Switches are supplied
Clear/Blue
without UL, cULus, & CSA
markings unless specified.
Specific models & ratings noted
on General Specifications page.
*JF & JG not suitable with neon.
* Wire harness & cable assemblies
offered only in Americas
Bright LED Used with LED Cap
LED Cap: Lens/Diffuser Colors
Clear/White
Colors
Resistor
JB
JC
JD
JF
No Code
No Resistor
5-volt
Clear/Red
5C
5D
5F
Red
05
12
24
Clear/Amber
Amber
Green
12-volt
Clear/Green
24-volt
DESCRIPTION FOR TYPICAL ORDERING EXAMPLE
LB15SKW01-5C12-JC
Super Bright LED Used with LED Cap
LED Cap: Lens/Diffuser Colors
6B
White
Green
Blue
JB
Clear/White
6F
6G
Red, 12-volt, Bright LED
with Resistor
Clear Cap with Red Diffuser
LED in Spot Illuminated Cap
Red Single Color
Spot Illuminated Cap Colors
1C
1D
1F
CF
A
B
C
F
Black
Available in
Square and
Round only.
Amber Single Color
Green Single Color
Red/Green Bicolor
White
SPDT ON-(ON) Circuit
Square Shape
Black Housing
Red
Green
Silver Contacts
Rated 3A @ 125/250V AC;
Solder Lug/Quick Connect Terminals
Nonilluminated
Nonilluminated Cap Colors
No
Code
A
B
C
E
Black
White
Red
F
Green
Blue
Nonilluminated
G
H
Gray
Yellow
D48
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D49
Series LB
Standard Size Snap-in Pushbuttons
POLES & CIRCUITS
Plunger Position
Connected Terminals
Throw & Switch/Lamp Schematics
(
) = Momentary
Notes: Switch is marked with NC, NO, COM, L+, L–.
Lamp circuit is isolated and requires an
external power source.
Normal
Down
Normal
Down
Pole
SP
Model
1
COM
LB15
*LB16
ON
ON
(ON)
ON
L (+)
(-) L
1-3
1-2
SPDT
DPDT
3
NC
2
NO
4
1
COM
2
COM
5
LB25
*LB26
ON
ON
(ON)
ON
DP
1-3 4-6
1-2 4-5
L (+)
(-) L
3
6
NC
NO
NC
NO
D
* When in latchdown position for the alternate circuit, cap position is .039” (1.0mm) above the built-in bezel.
SHAPES & PANEL CUTOUTS
.622” (15.8mm)
Square
.854” (21.7mm)
Round
.622” x .866” (15.8mm x 22.0mm)
Rectangular
S
C
R
(22.0) Dia
.866
(16.2)
.638
(11.5)
.453
(22.4)
.882
(16.2) Sq
.638
(1.5) R
.059
Cutout for 1 switch:
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)
.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
Black
Gray
Housing Colors Available:
K
G
CONTACT MATERIALS, RATINGS & TERMINALS
Solder Lug/Quick Connect
Power Level
Epoxy
Seal
W01
(7.5)
Silver Contacts
3A @ 125V AC & 250V AC
.295
Optional PCB adaptors
AT711 & AT712 available;
illustrated in “Optional
Accessories” immediately following
“Typical Switch Dimensions.”
(2.0)
.079
(2.8)
Logic Level
0.4VA max. @ 28V AC/DC max.
.110
(1.2)
.047
G01
Thk = (0.5)
.020
Gold Contacts
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
The electrical specifications shown are
determined at a basic temperature of
25°C. Lamp circuit is isolated and
requires external power source.
*
05
12
01
Voltage
Current
V
I
5V AC
12V AC
60mA
110V AC
1.5mA
115mA
Recommended Resistors for Neon:
33K ohms for 110V AC;
100K ohms for 220V AC
*
Endurance
Avg. Hours
10,000
–25°C ~ +50°C
10,000
Ambient Temp. Range
T-1 Bi-pin
D50
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Standard Size Snap-in Pushbuttons
Series LB
LED COLORS & SPECIFICATIONS
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
Red
Amber
Green
AT635
No Code
No Resistor
Color Codes
5C
5D
5F
LEDs are colored
in OFF state.
Red
Amber
Green
30mA
20mA
2.1V
5V
Forward Peak Current
Continuous Forward Current
Forward Voltage
IFM
IF
30mA
20mA
1.9V
5V
30mA
20mA
D
VF
2.0V
Reverse Peak Voltage
VRM
∆IF
5V
(+)
(-)
Current Reduction Rate Above 25°C
Ambient Temperature Range
0.42mA/°C
–25° ~ +50°C
T-11⁄
Bi-pin
2
Bright LED with Resistor
Resistor Codes
Red
Amber
Green
AT627
with Resistor
5C
5D
5F
05
12
24
Color Codes:
Forward Peak Current
Continuous Forward Current
Forward Voltage
IFM
IF
—
52mA
5V
—
26mA
—
13mA
24V
VF
12V
Reverse Peak Voltage
VRM
∆IF
4V
8V
16V
Current Reduction Rate Above 25°C
Ambient Temperature Range
0.50mA/°C
–25° ~ +50°C
T-1 Bi-pin
AT627
5-volt
AT627
12-volt
AT627
24-volt
(+)
(+)
(-)
(+)
(-)
4-element
4-element
4-element
with Resistor
(-)
with Resistor
with Resistor
Super Bright Single Element LED
AT625G Blue
AT631B White
AT632F Green
ATTENTION
ELECTROSTATIC
6B
6F
6G
SENSITIVE DEVICES
Color
IFM
IF
White
30mA
20mA
3.6V
5V
Green
30mA
Blue
30mA
20mA
3.6V
5V
Forward Peak Current
Continuous Forward Current
Forward Voltage
20mA
VF
3.5V
VRM
∆IF
Reverse Peak Voltage
5V
(+)
(-)
Current Reduction Rate Above 25°C
Ambient Temperature Range
0.50mA/°C
T-1 Bi-pin
–25° ~ +50°C
No Code
No Lamp
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D51
Series LB
Standard Size Snap-in Pushbuttons
CAP TYPES & COLOR COMBINATIONS
Color Codes:
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
AT4012
Round
AT4026
Rectangular
Translucent Colored Lens
Transparent Clear Filter
Lamp AT607
(13.2)
.520
(3.5)
.138
(19.4)
.764
(19.0) Dia
.748
(4.5)
.177
(13.2) Sq
.520
BJ
CJ
EJ
FJ
(5.5)
.217
(5.0)
.197
(6.0)
.236
(6.5)
.256
GJ
D
Material: Polycarbonate
Finish: Glossy
Insert Cap for Incandescent or Neon Lamp & Nonilluminated
Lens/Filter
Colors Available:
AT477
Square
AT4013
Round
AT4027
Rectangular
Transparent Clear Lens
(3.5)
.138
(13.2)
.520
(19.0) Dia
.748
(19.4)
.764
(4.5)
.177
(13.2) Sq
.520
JB
JC
JE
JF
(5.5)
.217
(5.0)
.197
(6.0)
.236
(6.5)
.256
JG
Translucent Colored Filter
JF and JG not suitable
with neon lamp.
Material: Polycarbonate
Finish: Glossy
Lamp AT607 or 607N
Cap for Bright LED without Resistor
Lens/Diffuser
Colors Available:
AT4176
Square
AT4178
Round
AT4177
Rectangular
(13.2)
.520
Transparent Clear Lens
(19.4)
.764
JB
(19.0) Dia
.748
(13.2) Sq
.520
(3.5)
.138
(4.5)
.177
(6.5)
.256
(5.0)
.197
JC
(5.5)
.217
(6.0)
.236
JD
JF
Translucent Colored Diffuser
Bright LED
AT635
Material: Polycarbonate
Finish: Glossy
Cap for Bright LED with Resistor
Lens/Diffuser
Colors Available:
AT4162
Square
AT4164
Round
AT4163
Rectangular
Transparent Clear Lens
JB
(3.5)
.138
(13.2)
.520
(13.2) Sq
.520
(19.0) Dia
.748
(19.4)
.764
(4.5)
.177
JC
(5.0)
.197
(6.5)
.256
(5.5
.217
(6.0)
.236
Translucent Colored Diffuser
JD
JF
Bright LED
AT627
Material: Polycarbonate
Finish: Glossy
D52
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Standard Size Snap-in Pushbuttons
Series LB
CAP TYPES & COLOR COMBINATIONS
Color Codes:
A Black
B White
C Red
D Amber
E Yellow
F Green
G Blue
H Gray
J Clear
Cap for Super Bright LEDs
Clear Lens
White Diffuser
Transparent
Clear Lens
AT4129
Square
AT4128
Round
AT4130
Rectangular
JB
(3.5)
.138
(13.2)
.520
(19.4)
.764
(19.0) Dia
.748
(13.2) Sq
.520
(4.5)
.177
Material:
Polycarbonate
Finish: Glossy
Translucent
White Diffuser
(5.5)
.217
(5.0)
.197
(6.5)
.256
(6.0)
.236
LEDs AT625
AT631 AT632
D
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
Bicolor
Single Color LED
with 1 Element
Bicolor LED
with 2 Elements
1C
1D
1F
CF
(+)
(-)
(+)
(-)
LED factory
assembled in Spot
Illuminated Caps
Red
10mA
8mA
1.9V
5V
Amber
30mA
24mA
2.0V
5V
Green
30mA
24mA
2.1V
5V
Red/Green
30/25mA
20mA
IFM
IF
Forward Peak Current
Continuous Forward Current
Forward Voltage
Not Available
Separately
VF
2.0/2.2V
—
VRM
∆IF
Reverse Peak Voltage
Current Reduction Rate Above 25°C
Ambient Temperature Range
0.13mA/°C 0.40mA/°C 0.40mA/°C 0.43/0.38mA/°C
–25° ~ +50°C
Cap Colors
Available:
AT480
AT4016
Round
Square
(4.0)
.157
(5.0)
.197
(2.0)
.079
(5.0)
.197
(19.0) Dia
.748
(13.2) Sq
.520
A
C
F
(3.5)
.138
(4.5)
.177
Cap with Window
(5.5)
.217
B
(6.5)
.256
Material:
Polycarbonate
Finish: Glossy
(2.0)
.079
Factory Assembled LED;
Not Available Separately
(6.0)
.236
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 for Nonilluminated
Cap Colors
Available:
AT484
Square
AT4017
Round
AT4030
Rectangular
(3.5)
.138
(13.2)
.520
(13.2) Sq
.520
(19.0) Dia
.748
(19.4)
.764
A
B
E
F
H
(4.5)
.177
(5.0)
.197
(6.5)
.256
(5.5)
.217
Cap
(6.0)
.236
C
G
No Lamp
Material: Polycarbonate
Finish: Glossy
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D53
Series LB
Standard Size Snap-in Pushbuttons
TYPICAL SWITCH DIMENSIONS
Square
Single & Double Pole
(1.8)
.071
(1.2) x (2.0) Typ
.047 x .079
(0.5) Typ
.020
(+)
L
L
NC
NO
3
2
1
6
5
4
(13.2) Sq
.520
(15.8) Sq
.622
COM
(2.54) Typ
.100
(-)
(1.0)
(2.8) Typ
.110
(5.08) Typ
.200
.039
(21.5)
.846
(7.5)
.295
(17.8) Sq
.701
(3.2)
.126
Latchdown Position
D
LB15SKW01-12-CJ
Single pole models do not have terminals 4, 5, & 6.
Round
Single & Double Pole
(1.2) x (2.0) Typ
.047 x .079
(1.8)
.071
(0.5) Typ
L (+)
NC
NO
3
2
1
6
5
4
.020
(15.8) Sq
.622
(21.7) Dia
.854
COM
L
(-)
(2.54) Typ
.100
(1.0)
(19.0) Dia
.748
(2.8) Typ
.110
(5.08) Typ
.200
.039
(3.2)
.126
(21.5)
.846
(7.5)
.295
(23.7) Dia
.933
Latchdown Position
LB16CKW01-12-CJ
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
L (+)
3
2
1
6
5
4
NC
NO
(13.2)
.520
(15.8)
.622
(17.8)
.701
COM
L
(-)
(2.54) Typ
.100
(2.8) Typ
.110
(1.0)
(19.4)
.764
.039
(5.08) Typ
.200
(24.0)
.945
(7.5)
.295
(22.0)
.866
(3.2)
.126
(22.5)
.886
Latchdown Position
LB26RGW01-12-CJ
Single pole models do not have terminals 4, 5, & 6.
OPTIONAL ACCESSORIES
PCB Adaptors
AT711ꢀ
SingleꢀPoleꢀ•ꢀStraightꢀPCꢀTerminals
AT712ꢀ
DoubleꢀPoleꢀ•ꢀStraightꢀPCꢀTerminals
(0.3) Typ
.012
(0.3) Typ
.012
(5.08) Typ
.200
(5.08)
.200
NC
NO
NC
NO
NC
NO
NC
NO
(+)
(-)
(+)
(-)
L
L
L
L
(15.8) Sq
.622
(15.8) Sq
.622
(2.54) Typ
.100
(2.54) Typ
.100
COM
COM
COM
COM
(2.54) Typ
.100
(2.54) Typ
.100
(1.0) Dia Typ
.039
(1.0) Dia Typ
.039
(0.5)
.020
(15.0)
.591
(0.5)
.020
(15.0)
.591
(0.74) Typ
.029
(0.74) Typ
.029
(4.0)
.157
(5.08)
.200
(4.0)
.157
(5.08)
.200
Note: Order adaptors separately.
D54
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Standard Size Snap-in Pushbuttons
Series LB
OPTIONAL ACCESSORIES
Barriers
AT497
End
AT498
Center
(23.5)
.925
Cutouts for More Than 1 Switch
(19.2)
.756
(4.3) Typ
.169
End Position
A
(5.2)
.205
(20.0)
.787
(16.2)
.638
(15.0)
.591
Center Position
D
Square
A = .752” (19.1mm) x Number of Switches + .051” (1.3mm)
Rectangular
(1.19)
.047
(1.19)
.047
Material: Polyamide
(19.2)
.756
A = .996” (25.3mm) x Number of Switches + .051” (1.3mm)
Protective Guard
AT499
Square
Protective Guard
(10.0)
.394
(21.0)
.827
Opens 90°
Closes manually
Cap Height
When
Assembled
(14.0) Sq
.551
(17.0)
.669
(17.9) Sq
.705
(20.0)
.787
(8.0)
.315
Material: Polyamide
Protective Guards reduce depth of switch behind panel by .020” (0.5mm).
Spring Loaded Protective Guard
AT4171
Square
Protective Guard
(10.5)
.413
(17.9)
.705
Opens 180°
Closes automatically
(20.5)
.807
(7.1)
.280
Cap Height
(18.4)
.724
When
(14.2)
.559
Assembled
(20.4)
.803
(7.5)
.295
(17.9)
.705
(16.2) Sq
.638
(39.0) Min*
1.535
AT4171
180°
Materials:
(10.5)
.413
Cover: Clear Polycarbonate
Base: Black GFR Polyamide
Coil Spring: Stainless Steel
(20.5)
.807
(20.4)
.803
(20.4)
Recommended Panel Thickness:
.039” ~ .106” (1.0mm ~ 2.7mm)
.803 (N)
(N) = Number of switches
* Minimum dimension allows opening of cover to 180°
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D55
Series LB
Standard Size Snap-in Pushbuttons
OPTIONAL ACCESSORIES
Protective Guard
AT4057
Rectangular
Protective Guard
(10.0)
.394
(14.0)
.551
(21.0)
.827
Opens 90°
Closes manually
Cap Height
When
Assembled
(24.15)
.951
(8.0)
.315
(26.0)
1.024
Material: Polyamide
Protective Guards reduce depth of switch behind panel by .020” (0.5mm).
D
Spring Loaded Protective Guard
AT4172
Rectangular
Protective Guard
(10.5)
.413
(17.9)
.705
(20.5)
.807
(7.1)
.280
(22.4)
.882
Cap Height
When
(24.6)
.969
(20.4)
.803
Assembled
(7.5)
.295
(26.6)
1.047
(16.2)
.638
(24.1)
.949
(39.0) Min*
1.535
AT4172
Opens 180°
Closes automatically
(10.5)
.413
180°
Materials:
(20.5)
.807
Cover: Clear Polycarbonate
Base: Black GFR Polyamide
Coil Spring: Stainless Steel
(26.6)
1.047
(26.6)
1.047 (N)
Recommended Panel Thickness:
.039” ~ .106” (1.0mm ~ 2.7mm)
(N) = Number of switches * Minimum dimension allows opening of cover to 180°
Dust Covers
AT4002
Round
AT4001
Square
AT4011
Rectangular
(16.5)
.650
(21.0) Dia
.827
(15.0) Sq
.591
(16.5)
.650
(24.0)
.945
Cap Height
When
Assembled
Cap Height
(2.5)
.098
(22.7)
.894
When
(2.5)
.098
(21.8) Dia
.858
Assembled
(30.2)
1.189
(7.3)
.287
(24.0) Sq
.945
(30.0) Dia
1.181
(7.3)
.287
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
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相关型号：
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