3M-Series
3MS/3MN/3MA
MINIATURE PUSHBUTTONS
The 3M family of miniature pushbutton switches is composed of four switch series; the
3MNH-Series
premium
sealed snap-action pushbutton, the
3MN-Series
snap-action pushbutton, the
3MS-Series
sealed snap-action
pushbutton, and the
3MA-Series
alternate-action pushbutton. These PC mount pushbutton switches offer a
variety of ratings, circuits, contact materials, terminal platings, pushbutton styles, and optional color caps.
3MS-Series
3MN-Series
3MNH-Series
3MA-Series
Product Highlights:
IP67 Sealing
Snap Action Contact Mechanism
Variety of Plunger and Bushing Lengths
Up to 14 Termination Choices
UL and cUL Approvals
Sleek Black Finish
Typical Applications:
Telecommunications
Performance Audio
Networking
Computers
Instrumentation
Low Power On/Off Designs
Resources:
Download 3D CAD Files
IGS
STP
Carling Technologies, Inc.
60 Johnson Avenue, Plainville, CT
06062
Email:
sales
@
carlingtech.com
Application Support:
team2
@
carlingtech.com
Phone:
860.793.9281
Fax:
860.793.9231
www.carlingtech.com
2 |
3M-Series - General Specifications
3MNH-Series
Premium Sealed
Miniature Pushbutton Switch
3MS-Series
Sealed Snap-Action
Miniature Pushbutton Switch
3MN-Series
Snap-Action
Miniature Pushbutton Switch
3MA-Series
Alternate Action
Miniature Pushbutton Switch
Electrical
Contact Rating
Electrical Life
Contact Resistance
Insulation Resistance
Dielectric Strength
refer to ordering scheme
50,000 make & break
cycles @ full load
3MS-Series:
50 mΩ max. initial @
2-4 VDC 100mA for both silver &
gold plated contacts.
3MN, 3MA & 3NMH-Series:
10 mΩ
max. initial @ 2-4 VDC 100mA for
both silver & gold plated contacts.
1000 MΩ min.
1500 Volts RMS @ sea level
Material
Case
Physical
Operating Temperature -30°C to +85°C
Index of Protection
3MS-Series:
IP68
3MNH-Series:
IP67
Cap Installation Support
3MS-Series:
10 lbs. max.
Solder Heat Resistance MIL-STD-202, Method 210
3MS-Series:
Glass filled nylon 6/6,
flame retardant, heat stabilized
(UL94V-0)
3MN, 3MA & 3NMH-Series:
Dially
phthalate (DAP) (UL 94V-0)
Plunger
3MS & 3MA-Series:
Glass filled
nylon or glass filled polyester
(UL94V-0)
3MN-Series:
Thermoplastic
polyester, black
3NMH-Series:
Brass, black finish
with o-ring seal
Bushing
3MN-Series:
Brass, nickel plated
3MA-Series:
Zinc, nickel plated
3NMH-Series:
Brass, black finish
with o-ring seal
Housing
3MN & 3MA-Series:
Stainless Steel
Switch Support Retainer
3MS-Series:
Stainless Steel
Terminal Seal
Epoxy
*Manufacturer reserves the right to change product specification without prior notice.
Email: sales
@
carlingtech.com Application Support: team2@carlingtech.com
Phone: (860) 793–9281 Fax: (860) 793–9231
www.carlingtech.com
3M-Series - 3MNH Ordering Scheme, 3MS Ordering Scheme
| 3
3MNH
1
Series
DP 1
2
Pole
3
Circuit
PJ
4
Plunger
BJ
5
Bushing
M2
6
Termination
Q E
7
Contacts
8
Seal
1 SERIES
3MNH
Premium Sealed Miniature Pushbutton Switch
2 POLES
SP
Single pole - uses terminals 1, 2 & 3
DP
Double pole - uses terminals 1, 2, 3, 4, 5 & 6
3 CIRCUIT
( ) - momentary
Switching Position:
1
7
6 TERMINATION
M1
Solder Lug
M2
PC thru-hole
M51
Wire wrap, .711” [18.05 mm]
M52
Wire wrap, .924” [23.48 mm]
M53
Wire wrap, .386” [9.80 mm]
7 CONTACTS / TERMINALS
Contact Material Terminal Plating Rating
G
silver
5
gold over silver
(SP1, DP1)
6A@125VAC or 28VDC
3A@250VAC
(SP7, DP7)
1
ON
ON
2
ON
(ON)
Approvals
, IP67
Note: Plunger at rest in Position 1. Plunger depressed in Position 2.
1A@120VAC or 38VDC
Q
silver
5
silver
5
(SP1, DP1)
4 PLUNGER
1
PJ
.325 height [8.25 mm]
PA
.157 height [4.00 mm]
PB
.354 height [9.00 mm]
5 BUSHING
2
BJ
3
Threaded 15/32, flat, .553 height [14.05 mm]
BL
4
Threaded 15/32, flat, .295 height [7.49 mm]
Notes:
1
PJ Plunger for maintained circuits only. PA and PB Plunger for momentary circuits only
2
Hardware includes (1) 2M1-HDW4 nut and (1) 3MNH-WCP-0872 o-ring
3
BJ Bushing only available with PJ Plunger
4
BL Bushing only available with PA or PB Plunger
5
Movable contact & terminal platings: silver over copper alloy
6
Movable Contact platings: gold over nickel over copper alloy
7
Terminal platings: gold over nickel over copper alloy
, IP67
6A@125VAC or 28VDC
3A@250VAC
(SP7, DP7)
R
gold
6
gold
7
1A@120VAC or 38VDC
0.4VA max @ 20V max
(AC/DC)
N/A
8 EPOXY SEAL
E
Epoxy Seal
3MS
1
Series
WSP E
2
Pole
3
Circuit
P1
4
Actuator Style
B1
5
Bushing
M6 Q E
6
Termination
7
Contacts
8
Seal
1 SERIES
3MS
Sealed Snap-Action Miniature Pushbutton Switch
2 POLES
WSP
Single pole - uses terminals 1, 2 & 3
WDP
Double pole - uses terminals 1, 2, 3, 4, 5 & 6
3 CIRCUIT
( ) - momentary
Switching Position:
7
1
2-3, 5-6
ON
2
2-1, 5-4
(ON)
Note: Plunger at rest in Position 1. Plunger depressed in Position 2.
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 .461” height
VS21
Snap-In, U bracket, .620” mounting x .461” height
VS3
PC Mount, U bracket, .620” mounting x .630” height
VS31
Snap-In, vertical, .630” height
VS4
PC Mount, U bracket, .750” mounting x .461” height
VS41
Snap-In, vertical, .461 height
VS5
PC Mount, U bracket, .750” mounting x .630” height
VS51
Snap-In, vertical, .630” height
4 ACTUATOR STYLE
P1
Standard Plunger
P2
Long Plunger
P3
Short Plunger
5 BUSHING
B1
1
Threaded, with keyway, .350 height [8.89 mm]
B4
Unthreaded, flatted, .250 height [6.35 mm]
Notes:
1
Hardware includes (2) 2M1-HDW2 nuts, (1) 2M1-HDW11 washer, and (1) 2M1-HDW15
locking ring
2
Movable contact and terminal platings: gold over nickel over copper alloy
3
Movable contact and terminal platings: silver over copper alloy
7 CONTACTS / TERMINALS
Contact Material Terminal Plating
G
silver
3
gold over silver
silver
3
Q
silver
3
R
gold
2
gold
2
8 EPOXY SEAL
E
Epoxy Seal
Rating
Approvals
1A 120VAC or 38VDC
, IP68
1A 120VAC or 38VDC
, IP68
0.4VA max 20V max
(AC/DC)
IP68
0
without Epoxy Seal
Email: sales
@
carlingtech.com Application Support: team2@carlingtech.com
Phone: (860) 793–9281 Fax: (860) 793–9231
www.carlingtech.com
4 |
3M-Series - 3MN Ordering Scheme
3MN-Series with Square Actuator
3MN
1
Series
SP
2
Poles
7
3
Circuit
AP2
4
Bushing
3 2
5A
Actuator
Color
5B
Frame
Color
M6 Q E
6
Termination
7
Contacts
8
Seal
3MN-Series with Plunger Actuator
3MN
1
Series
SP
2
Poles
7
3
Circuit
P2
4
Bushing
B6
5
Actuator
M6 Q E
6
Termination
7
Contacts
8
Seal
1 SERIES
3MN
Snap-Action Miniature Pushbutton Switch
2 POLES
SP
Single pole - uses terminals 1, 2 & 3
DP
Double pole - uses terminals 1, 2, 3, 4, 5 & 6
3 CIRCUIT
( ) - momentary
Switching Position:
7
1
2-3, 5-6
ON
2
2-1, 5-4
(ON)
Note: Plunger at rest in Position 1. Plunger depressed in Position 2.
6 TERMINATION
M1
Solder Lug
M2
PCB
M51
Wire Wrap .750 [19.05]
M52
Wire Wrap .964 [24.40]
M53
Wire Wrap .425 [10.80]
M6
PC Mount, 90° horizontal
M7
PC Mount, 90° vertical
VS2
PC Mount, U bracket, .620” mounting x .461” height
VS3
PC Mount, U bracket, .620” mounting x .630” height
VS4
PC Mount, U bracket, .750” mounting x .461 height
VS5
PC Mount, U bracket, .750” mounting x .630” height
VS6
PC Mount, U bracket, .461 height (for B6 bushing only)
VS7
PC Mount, U bracket, .630 height (for B6 bushing only)
VS8
PC Mount, U bracket, .461 height (for B6 bushing only)
VS9
PC Mount, U bracket, .630 height (for B6 bushing only)
4 ACTUATOR
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
Flush Plunger
P1
Standard Plunger
P2
Short Plunger
5A ACTUATOR COLOR & 5B FRAME COLOR
3,4
1
White
4
Orange
7
Blue
2
Black
5
Yellow
8
Brown
3
Red
6
Green
9
Gray
OR
5 BUSHING
B6
Unthreaded (for terminations VS6-VS9 only)
B10
1
Threaded keyway
B11
2
Threaded with flat
B20
Unthreaded keyway
B21
Unthreaded with flat
7 CONTACTS / TERMINALS
Contact Material Terminal Plating
G
silver
5
gold over silver
Q
silver
5
silver
5
6
R
gold
gold
6
Rating
Approvals
1A 125VAC or 28VDC
1A 125VAC or 28VDC
0.4VA max 20V max
(AC/DC)
N/A
8 EPOXY SEAL
E
Epoxy Seal
0
without Epoxy Seal
Notes:
1
Hardware includes (2) 2M1-HDW2 nuts, (1) 2M1-HDW11 washer, and
(1) 2M1-HDW15 locking ring
2
Hardware includes (2) 2M1-HDW2 nuts, (1) 2M1-HDW11 washer, and
(1) 2M1-HDW16 locking ring
3
Tin option available with PC type terminations only.
4
Selection 5B is blank if actuator style is AP1 (no frame)
5
Black, white and red are standard. Other colors available, consult factory for details.
6
Movable contact & terminal platings: silver over copper alloy
7
Movable contact & terminal platings: gold over nickel over copper alloy
Email: sales
@
carlingtech.com Application Support: team2@carlingtech.com
Phone: (860) 793–9281 Fax: (860) 793–9231
www.carlingtech.com
3M-Series - 3MA Ordering Scheme, 3M Accessories
| 5
3MA-Series with Square Actuator
3MA
1
Series
SP
2
Poles
1
3
Circuit
AP2
4
Bushing
3 2
5A
Actuator
Color
5B
Frame
Color
M6 Q E
6
Termination
7
Contacts
8
Seal
3MA-Series with Plunger Actuator
3MA
1
Series
SP
2
Poles
1
3
Circuit
PD
4
Bushing
BD
5
Actuator
M6 Q E
6
Termination
7
Contacts
8
Seal
1 SERIES
3MA
Alternate Action Miniature Pushbutton Switch
2 POLES
SP
Single pole - uses terminals 1, 2 & 3
DP
Double pole uses terminals 1,2, 3, 4, 5 & 6
3P
1
Three pole uses terminals 1,2, 3, 4, 5, 6, 7, 8 & 9
4P
1
Four pole uses terminals 1,2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
3 CIRCUIT
( ) - momentary
Switching 1
Position:
2-3, 5-6, 8-9, 11-12
1
ON
2*
ON
*
Available in SP & DP only.
2
Connected Terminals
NONE
NONE
3
2-1, 5-4, 8-7,11-10
ON
(ON)
6 TERMINATION
M1
Solder Lug
M2
PCB
M51
Wire Wrap .750
M52
Wire Wrap .964
M53
Wire Wrap .425
M54
Wire Wrap 1.062
M6
PC Mount, 90° horizontal
M7
PC Mount, 90° vertical
VS2
PC Mount, U bracket, .620” mounting x .461” height
VS3
PC Mount, U bracket, .620” mounting x .630” height
VS4
PC Mount, U bracket, .750” mounting x .461” height
VS5
PC Mount, U bracket, .750” mounting x .630” height
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
Standard Plunger
PI
Medium Plunger
PL
Brass Chrome Plunger
PC
Brass Chrome Plated Plunger with Cap (for BD bushing only)
PD
Brass Chrome Plated Plunger (for BD bushing only)
5A ACTUATOR COLOR & 5B FRAME COLOR
4,5
1
White
4
Orange
7
Blue
2
Black
5
Yellow
8
Brown
3
Red
6
Green
9
Gray
OR
5 BUSHING
BD
1
Big bushing for PC, PD actuator 15/32”
B10
2
Threaded 1/4 - 40
B20
Unthreaded
B21
Unthreaded with flat
7 CONTACTS / TERMINALS
Contact Material Terminal Plating Rating
Approvals
G
silver
6
gold over silver 6A 125VAC or 28VDC
3A 250VAC
K
gold
7
tin
8
0.4VA max 20V max
(AC/DC)
N/A
gold over silver 6A 125VAC or 28VDC
P
silver
6
3A 250VAC
silver
6
6A 125VAC or 28VDC
Q
silver
6
3A 250VAC
R
gold
7
gold
7
0.4VA max 20V max
(AC/DC)
N/A
8 EPOXY SEAL
E
Epoxy Seal
0
without Epoxy Seal
Notes:
1
Hardware includes (2) 2M1-HDW2 nuts, (1) 2M1-HDW12 washer, and
(1) 2M1-HDW17 locking ring
2
Hardware includes (2) 2M1-HDW2 nuts, (1) 2M1-HDW11 washer, and
(1) 2M1-HDW15 locking ring
3
Tin option available with PC type terminations only.
4
Available with circuit 1 only
5
Black, white and red are standard. Other colors available, consult factory for details.
6
Selection 5B is blank if actuator style is AP1 (no frame)
7
Movable contact & terminal platings: silver over copper alloy
8
Movable contact & terminal platings: gold over nickel over copper alloy
9
Terminal platings: tin over nickel over copper alloy, available for PC mount
terminations only
3M-Series Accessories
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
Optional Cap
1 SERIES
3MN
Fits 3MN, 3MS or 3MA
2 PUSHBUTTON CAP SIZE
C1
Round 8 mm diameter
C2
Round 9.70 mm diameter
C3
Square 11.7 x 11.7 mm
C4
Round 5 mm diameter
3MN
1
Series
C1 3
2
Toggle Cap Size
3
Color
3 CAP COLOR
1
White
2
Black
3
Red
C5
1
C6
2
Round 15 mm diameter
Brass Chrome Plated,
3.15 mm diameter
Notes:
1
For 3MA with PL Bushing
2
For 3MA with PD Bushing
4
5
6
7
Orange
Yellow
Green
Blue
Email: sales
@
carlingtech.com Application Support: team2@carlingtech.com
Phone: (860) 793–9281 Fax: (860) 793–9231
www.carlingtech.com
