Carling
Technologies
™
3M-Series Miniature Pushbutton Switches
3MN-Series
Snap-Action
Miniature
Pushbutton Switch
Specifications
Contact Rating . . . . . . . . . refer to ordering scheme
Electrical Life . . . . . . . . . . 50,000 make & break cycles @ full
load
Contact Resistance. . . . . .
3MN& 3MA-Series:
10 mΩ max. ini-
tial @ 2-4 VDC 100mA for both sil-
ver & gold plated contacts.
3MS-Series:
50 mΩ max. initial @
2-4 VDC 100mA for both silver &
gold plated contacts.
Insulation Resistance . . . 1000 MΩ min.
Dielectric Strength . . . . . . 1500 Volts RMS @ sea level
Operating Temperature . . . -30°C to +85°C
Index of Protection . . . . . .
3MS -Series:
IP68
Cap Installation Support . .
3MS-Series:
10 lbs. max.
Solder Heat Resistance. . . MIL-STD-202, Method 210
Actuator Travel . . . . . . . . . 25°
3MS-Series
Sealed Snap-Action
Miniature Pushbutton
Switch
Materials
Case . . . . . . . . . . . . . . . .
3MN & 3MA-Series:
Dially phthalate
(DAP) (UL 94V-0)
3MS-Series:
Glass filled nylon 6/6,
flame retardant, heat stabilized (UL
94V-0)
Plunger. . . . . . . . . . . . . . .3MN-Series: Thermoplastic poly-
ester, black
3MS & 3MA-Series:
Glass filled
nylon or glass filled polyester (UL
94V-0)
Bushing . . . . . . . . . . . . . .
3MN-Series:
Brass, nickel plated
3MA-Series:
Zinc, nickel plated
Housing. . . . . . . . . . . . . . .3MN
& 3MA-Series:
Stainless Steel
Switch Support Retainer . .3MS-Series: Stainless Steel
Terminal Seal . . . . . . . . . . Epoxy
3MA-Series
Alternate
Action
Miniature Pushbutton
Switch
3M-Series Optional Cap
To order a cap assembled on a switch, specify the switch number followed by the cap part number and the word “assembled”.
Ex: 3MN-SP-7-P2-B6-M6QE-C13ASSEMBLED
To order caps in bulk, specify the Series, followed by the cap. Ex.) 3MN-C13
3MN
-
C1 3
1
Series
2
Cap Size
3
Color
1 SERIES OR SWITCH CATALOG NUMBER
3MN, 3MS
or
3MA
2 CAP SIZE
C1
C2
C3
C4
round 7.6mm dia.
round 9.35 mm dia.
square 11.7 x 11.7mm
round 5mm dia.
C5
C6
round 14.5mm dia.
(for 3MA w/ PL bushing)
brass chrome plated
(for 3MA w/ PD bushing)
3 CAP COLOR
1
2
3
4
1
white
black
red
orange
5
6
7
yellow
green
blue
Black, white & red standard. Other colors available. Consult factory.
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35
Carling
Technologies
™
3M-Series Miniature Pushbutton Switches
3MN-Series Ordering Scheme
with Square Actuator
3MN
-
SP
-
7
-
AP2
/
3 2
-
M6 Q E
1
Series
2
Poles
3
Circuit
4
Actuator
5A
Actuator
Color
5B
Frame
Color
6
Termination
7
Contact
8
Seal
with Plunger Actuator
3MN
-
SP
-
7
-
P2
-
B6
-
M6 Q E
1
Series
2
Poles
3
Circuit
4
Actuator
5
Bushing
6
Termination
7
Contact
8
Seal
1 SERIES
3MN
Snap-Action Miniature Pushbutton Switch
2 POLES
SP
single pole
3 CIRCUIT
( ) - momentary
DP
double pole
7
ON
(ON)
4 ACTUATOR
1
SQUARE ACTUATOR
(use with Color Options in Selection 5A & 5B.)
AP1
square with no frame
AP2
square raised above frame
AP3
square flush with frame
PLUNGER ACTUATOR
(use with Bushing Options in Selection 5)
P0
2.5mm short plunger(for B6 bushing only)
P1
5.2mm plunger(for bushing B10,B11,B20,B21; 7.5mm for B6)
P2
2.0mm plunger(for bushing B10,B11,B20,B21; 4.2mm for B6)
5A ACTUATOR COLOR & 5B FRAME COLOR
1,2
1
white
4
orange
2
black
5
yellow
3
red
6
green
1
2
6 TERMINATION
M1
Solder Lug
M2
PCB
M5-1
Wire Wrap .750 [19.05]
M5-3
Wire Wrap .425 [10.80]
M6
PC Mount, 90° horizontal
M7
PC Mount, 90° vertical
VS2
PC Mount, U bracket, .620
VS3
PC Mount, U bracket, .620
VS4
PC Mount, U bracket, .750
VS5
PC Mount, U bracket, .750
VS6
PC Mount, U bracket, .460
VS7
PC Mount, U bracket, .630
VS8
PC Mount, U bracket, .460
VS9
PC Mount, U bracket, .630
7 CONTACT
Material
G
silver
1
Q
silver
1
R
gold
2
mounting x .460 high
mounting x .630 high
mounting x .460 high
mounting x .630 high
high (for B6 bushing only)
high (for B6 bushing only)
high (for B6 bushing only)
high (for B6 bushing only)
Terminal Plating
gold over silver
3
silver
1
gold
2
Rating
Approvals
1A@120VAC or 28VDC
UL, CUL
1A@120VAC or 28VDC
UL, CUL
0.4VA max. @20V max (AC/DC)
7
blue
8
brown
9
gray
NOTE:
Tin-lead option available with PC type terminations only.
1
Moveable contact & terminals: copper alloy, silver plate
2
Moveable contact & terminals: copper alloy with gold plate over nickel plate
3
Terminals: silver plate with outer layer in gold plating
Black, white and red are standard. Other colors available, consult factory for details.
Selection 5B is blank if actuator style is AP1 (no frame)
8 EPOXY SEAL
E
epoxy seal
OR
5 BUSHING
B6
B10
B11
B20
B21
Unthreaded (for terminations VS6-VS9 only)
Threaded keyway
Threaded with flat
Unthreaded keyway
Unthreaded with flat
NOTE:
If ordering optional CAP with bushings B10, B11, B20 or B21, specify actuator P1.
For CAP with bushing B6, specify actuator P2.
For CAP options, see ordering scheme on page 35.
36
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Carling
Technologies
™
3M-Series Miniature Pushbutton Switches
3MS-Series Ordering Scheme
3MS
-
WSP 7
-
P1
-
B1
-
M6 Q E
1
Series
2
Poles
3
Circuit
4
Actuator
5
Bushing
6
Termination
7
Contact
8
Seal
1 SERIES
3MS
Sealed Snap-Action Miniature Pushbutton Switch
2 POLES
WSP
single pole
3 CIRCUIT
( ) - momentary
WDP
double pole
6 TERMINATION
M1
Solder Lug
M2
PCB
M6
PC Mount, 90° horizontal
M61
Snap-In, 90° horizontal
M7
PC Mount, 90° vertical
M71
Snap-In, 90° vertical
VS2
PC Mount, U bracket,
.620 mounting x .460 high
7 CONTACT
Material
G
silver
1
Q
silver
1
R
gold
2
VS21Snap-In,
U bracket,
.620 mounting x .460 high
VS3
PC Mount, U bracket,
.620 mounting x .630 high
VS4
PC Mount, U bracket,
.750 mounting x .460 high
VS5
PC Mount, U bracket,
.750 mounting x .630 high
7
ON
(ON)
4 ACTUATOR
P1
.173” plunger (for B1 bushing); .276” (for B4 bushing)
P2
.220” plunger (for B1 bushing); .327” (for B4 bushing)
P3
.087” plunger (for B1 bushing); .193” (for B4 bushing)
5 BUSHING
B1
B4
Terminal Plating
gold over silver
3
silver
1
gold
2
Rating
1A@120VAC or 28VDC
1A@120VAC or 28VDC
0.4VA max. @20V max
(AC/DC)
Approvals
UL, CUL IP68
UL, CUL IP68
IP68
Threaded
Unthreaded
NOTE:
Tin-lead option available with PC type terminations only.
1
Moveable contact & terminals: copper alloy, silver plate
2
Moveable contact & terminals: copper alloy with gold plate over nickel plate
3
Terminals: silver plate with outer layer in gold plating
7 EPOXY SEAL
E
epoxy seal
3MA-Series Ordering Scheme
with Square
Actuator
3MA
-
SP
-
1
-
AP2
/
3 2
-
M6 Q E
1
Series
2
Poles
3
Circuit
4
Actuator
5A
Actuator
Color
5B
Frame
Color
6
Termination
7
Contact
8
Seal
with Plunger
Actuator
3MA
-
SP
-
1
-
PD
-
BD
-
M6 Q E
1
Series
2
Poles
3
Circuit
4
Actuator
5
Bushing
6
Termination
7
Contact
8
Seal
1 SERIES
3MA
Alternate-Action Miniature Pushbutton Switch
2 POLES
SP
single pole
3 CIRCUIT
( ) - momentary
DP
double pole
3P
three pole
4P
four pole
6 TERMINATION
M1
Solder Lug
M2
PCB
M5-1
Wire Wrap .750 [19.05]
M5-2
Wire Wrap .964 [24.48]
M5-3
Wire Wrap .425 [10.80]
M5-4
Wire Wrap 1.062 [26.87]
M6
PC Mount, 90° horizontal
M7
PC Mount, 90° vertical
VS2
VS3
VS4
VS5
PC Mount, U bracket,
.620 mounting x .460 high
PC Mount, U bracket,
.620 mounting x .630 high
PC Mount, U bracket,
.750 mounting x .460 high
PC Mount, U bracket,
.750 mounting x .630 high
1
2
Switching Position:
2-3, 5-6, 8-9, 11-12
ON
ON
OPEN
NONE
NONE
2-1, 5-4, 8-7, 11-10
ON
(ON)
4 ACTUATOR
SQUARE ACTUATOR
(use with Color Options in Selection 5A & 5B.)
AP1
square with no frame
AP2
square raised above frame
PLUNGER ACTUATOR
(use with Bushing Options in Selection 5)
PA
.118 dia. x .299” plunger length
PI
.118 dia. x .244” plunger length
PL
.118 dia. x .327” plunger length
PC
.315” dia. brass chrome plated plunger (for BD bushing only)
PD
.242” dia. brass chrome plated plunger (for BD bushing only)
5A ACTUATOR COLOR & 5B FRAME COLOR
1,2
1
white
4
orange
2
black
5
yellow
3
red
6
green
1
2
7 CONTACT
Material Terminal Plating Rating
gold over silver
3
6A@125VAC or 28VDC,
G
silver
1
3A@250VAC
K
gold
2
tin-lead
4
6A@125VAC or 28VDC
P
silver
1
tin-lead
4
6A@125VAC or 28VDC,
3A@250VAC
Q
silver
1
silver
1
6A@125VAC or 28VDC
3A@250VAC
R
gold
2
gold
2
0.4VA max. @20V max (AC/DC)
Approvals
UL, CUL
UL, CUL
UL, CUL
NOTE:
Tin-lead option available with PC type terminations only.
1
Moveable contact & terminals: copper alloy, silver plate
2
Moveable contact & terminals: copper alloy with gold plate over nickel plate
3
Terminals: silver plate with outer layer in gold plating
4
Outer terminals: copper alloy with tin-lead over nickel plate
7
blue
8
brown
9
gray
8 EPOXY SEAL
E
epoxy seal
Black, red and white are standard. Other colors available, consult factory for details.
Selection 5B is blank if actuator style AP1 (no frame)
OR
5 BUSHING
BD
B10
B20
B21
Big bushing for PC, PD actuator 15/32”
Threaded 1/4 - 40
Unthreaded
Unthreaded with flat
NOTE: For CAP options, see ordering scheme on page 35.
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37
Carling
Technologies
™
3M-Series Miniature Pushbutton Switches
3MN-Series Dimensional Specifications: in. [mm]
PLUNGER
.118 DIA
[Ø 3.00]
DIM. "A"
OPTION
CODE
DIM. "A"
.000 [0.00]
.205 [5.20]
.079 [2.00]
FOR B6 ONLY
DIM. "A"
.118 DIA
[Ø 3.00]
OPTION
CODE
DIM. "A"
.098 [2.50]
.295 [7.50]
.165 [4.20]
P0
P1
P2
FOR B10,B11,B20,B21 ONLY
P0
P1
P2
ACTUATOR
AP1
.726
[18.43]
.472
[12.00]
.130
[3.30]
.016
[0.40]
PANEL MOUNTING
.500
[12.70]
.461
[11.70]
.047 TO .125
[1.19]
[3.18]
PANEL TICKNESS
.287
[7.30]
.600
[15.24]
.005 R
[0.13 R]
MAX TYP.
.461
[11.70]
.614
[15.60]
.079
[2.00]
.079
[2.00]
PANEL MOUNTING
.768
[19.50]
AP2
.461
[11.70]
.614
[15.60]
.461
[11.70]
.047
.125
[1.19] TO [3.18]
PANEL TICKNESS
.268
[6.80]
.500
[12.70]
.600
[15.24]
.079
[2.00]
.005 R
[0.13 R]
MAX TYP.
.768
[19.50]
AP3
.461
[11.70]
.461
[11.70]
.047
.125
[1.19] TO [3.18]
PANEL TICKNESS
.268
[6.80]
BUSHING
B10
STANDARD KEYWAY
THREADED SHOWN
.039
[1.00]
.268
[6.80]
.020
[0.50]
1/4-40NS
.250
[6.35]
.039
[1.00]
B11
THREADED SHOWN
WITH FLAT
.268
[6.80]
.224
[5.70]
1/4-40NS
.250
[6.35]
.039
[1.00]
B6
NON-THREADED
(FOR TERMINATION
OPTIONS VS6-VS9 ONLY)
.453
[11.50]
.177
[4.50]
B20
STANDARD KEYWAY
NON-THREADED
B21
NON-THREADED
WITH FLAT
CAP
C1
.299
[7.60]
C2
.374
[9.50]
.193
[4.90]
.260
[6.60]
.295
[7.50]
.260
[6.60]
.382 DIA
[Ø 9.70]
C3
.461
[11.70]
.461
[11.70]
C4
.134
[3.40]
.197 DIA
[Ø 5.00]
.315 DIA
[Ø 8.00]
.158
[4.02]
38
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Carling
Technologies
™
3M-Series Miniature Pushbutton Switches
3MN-Series Dimensional Specifications: in. [mm]
TERMINATION
M1
.078
[1.98]
.222
[5.65]
.080
[2.03]
.047
[1.20]
.189
[4.80]
.256
[6.50]
.050
[1.26]
"A"
M2
M5
OPTION
CODE
DIM. "A"
.750 [19.05]
.425 [10.80]
M5-1
.050
[1.26]
THK .030 [0.75]
M5-3
THK .030 [0.75]
THK .030 [0.75]
SINGLE POLE
.289
[7.35]
.289
[7.35]
.205
[5.20]
.118 DIA
[Ø 3.00]
1/4-40NS
.222
[5.65]
.185
[4.70]
.347
[8.80]
.030
[0.75]
.260
[6.60]
3 N.C.
DOUBLE POLE
.030
[0.75]
.449
[11.40]
3 N.C.
.224
[5.70]
.402
[10.20]
.500
[12.70]
2 N.O.
1 COMM.
.114 DIA
[Ø 2.90]
1/4-40NS
.222
[5.65]
.500
[12.70]
.185
[4.70] .080
[2.03]
2 N.O.
1 COMM.
.080
[2.03]
.190
[4.83]
M6
.205
[5.20]
.270
[6.85]
SINGLE POLE
.050
[1.26]
.260
[6.60]
.200
[5.08]
.200
[5.08]
. 500
[12.70]
.030
[0.75]
.185
[4.70]
.500
[12.70]
PC MOUNTING
.500
[12.70]
.185
[4.70]
.118 DIA
[Ø 3.00]
. 051
[1.30]
.073 DIA
[Ø 1.85]
.224
[5.70]
.270
[6.85]
DOUBLE POLE
.050
[1.26]
.449
[11.40]
.500
[12.70]
PC MOUNTING
.500
[12.70]
.200
[5.08]
.185
[4.70]
.150
[3.81]
.185
[4.70]
.114 DIA
[Ø 2.90]
. 051
[1.30]
. 500
[12.70]
.150
[3.81]
.200
[5.08]
.030
[0.75]
.073 DIA
[Ø 1.85]
M7
.205
[5.20]
SINGLE POLE
.270
[6.85]
.030
[0.75]
.260
[6.60]
PC MOUNTING
.500
[12.70]
.150
[3.81]
.500
[12.70]
.118 DIA
[Ø 3.00]
. 051
[1.30]
. 500
[12.70]
.150
[3.81]
.050
[1.26]
.200
[5.08]
.073 DIA
[Ø 1.85]
.200
[5.08]
DOUBLE POLE
.224
[5.70]
.270
[6.85]
.030
[0.75]
.449
[11.40]
PC MOUNTING
.150
[3.81]
.500
[12.70]
.185
[4.70]
.114 DIA
[Ø 2.90]
. 051
[1.30]
. 500
[12.70]
.150
[3.81]
.500
[12.70]
.200
[5.08]
.073 DIA
[Ø 1.85]
.190
[4.83]
.200
[5.08]
.050
[1.26]
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39
