Series M2
Toggles
Process Sealed Miniature Pushbuttons
General
Specifications
Electrical Capacity (Resistive Load)
Power Level (silver):
Logic Level (gold):
Logic/Power Level:
(gold over silver)
Rockers
Pushbuttons
C
1A @ 125V AC or 1A @ 30V DC
0.4VA maximum @ 28V AC/DC maximum
(Applicable Range 0.1mA ~ 0.1A @ 20mV ~ 28V)
Combines silver & gold ratings
Note: Find additional explanation of dual rating & operating range in Supplement section.
Programmable Illuminated PB
Other Ratings
Contact Resistance:
Insulation Resistance:
Dielectric Strength:
Keylocks
Mechanical Life:
Electrical Life:
Nominal Operating Force:
Contact Timing:
Travel:
20 milliohms maximum for silver; 30 milliohms maximum for gold
1,000 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
200,000 operations minimum
25,000 operations minimum for silver; 100,000 operations minimum for gold
Single pole 2.94N & double pole 4.90N
Nonshorting (break-before-make)
Pretravel .023” (0.6mm); Overtravel .016” (0.4mm); Total Travel .039” (1.0mm)
Brass with nickel plating
Brass with tin plating
Glass fiber reinforced polyamide (UL94V-0)
Nitrile butadiene rubber
Glass fiber reinforced polyamide (UL94V-0)
Silver alloy with silver plating (code W); copper with gold plating (code G);
or silver alloy with gold plating (code A)
Silver alloy with silver plating (code W); copper with gold plating (code G);
or silver alloy with gold plating (code A)
Brass with silver or gold plating
–30°C through +85°C (–22°F through +185°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/s
2
) acceleration (tested in 6 right angled directions, with 5 shocks in each direction)
49.0N (11.0 lbf) for plunger A & 79.4N (17.9 lbf) for plunger B
Wave Soldering Recommended: See Profile B in Supplement section.
Manual Soldering: See Profile B in Supplement section.
Automated cleaning. See Cleaning specifications in Supplement section.
UL94V-0 rated bushing/housing & base
File No. E44145 - Recognized only when ordered with marking on switch.
Add “/U” or “/CUL” before dash in part number to order UL recognized switch.
All models recognized at 1A @ 125V AC, 1A @ 30V DC, or 0.4A @ 28V DC.
File No. 023535_0_000 - Certified only when ordered with marking on switch.
Add “/C” before dash in part number to order CSA certified switch.
All models certified at 1A @ 125V AC, 1A @ 30V DC, or 0.4A @ 28V DC.
Materials & Finishes
Plunger:
Support Bracket:
Bushing/Housing:
Sealing Ring:
Base:
Movable Contacts:
Slides
Rotaries
Stationary Contacts:
Terminals:
Tactiles
Environmental Data
Operating Temp Range:
Humidity:
Vibration:
Shock:
Tilt
Installation
Touch
Cap Installation Force:
Soldering:
Cleaning:
PCB Processing
Indicators
Standards & Certifications
Flammability Standards:
UL:
Accessories
CSA:
Supplement
C64
www.nkk.com
Process Sealed Miniature Pushbuttons
Series M2
Toggles
Distinctive
Characteristics
Snap-acting contact mechanism gives short travel, sensitive actuation,
light touch, smooth feel, audible feedback, and a longer electrical life.
Single unit construction of the bushing and top of the
housing gives protection from cleaning fluids or
other liquids.
C
O-ring surrounding actuator at top of bushing
interior prevents liquids from reaching switch
mechanism.
Bracketed models have crimped bracket legs to
ensure secure PC mounting and prevent dislodging
during automated soldering.
Logic level and power capabilities are available to suit varying
applications.
Actual Size
Touch
www.nkk.com
C65
Supplement
Accessories
Indicators
Tilt
Tactiles
Slides
Terminals are epoxy sealed to prevent entry
of flux, solvents, and other contaminants.
Rotaries
Ultrasonic welding of upper and lower
housing seals out contaminants and allows
automated soldering and cleaning.
Keylocks
Programmable Illuminated PB
Pushbuttons
Rockers
Series M2
Toggles
Process Sealed Miniature Pushbuttons
TYPICAL SWITCH ORDERING EXAMPLE
M2B
C
Poles & Circuits
15
25
SPDT
DPDT
ON
ON
15
A
A5
G
30
F
C
Programmable Illuminated PB
Pushbuttons
Rockers
(ON)
(ON)
W
Contact Materials
& Ratings
Silver;
Rated 1A @ 125V AC
& 1A @ 30V DC
Gold;
Rated 0.4VA maximum
@ 28V AC/DC maximum
Gold over Silver; Rated
1A @ 125V AC & 0.4VA
max @ 28V AC/DC max
F
H
B
C
Snap-on Caps
For Plunger A
.201” (5.1mm) Diameter
.295” (7.5mm) Diameter
For Plunger B
.315” (8.0mm) Diameter
.394” (10.0mm) Diameter
( ) = Momentary
G
Keylocks
Plungers
A
B
.282” (7.16mm) Long
for cap codes F & H
.307” (7.8mm) Long
for cap codes B & C
A
Cap Colors
A
Black
White
Red
Yellow
Green
Blue
Gray
Rotaries
PC Terminals
Bushing
03
13
30
40
Straight
Straight with
.460” (11.7mm) Bracket
.150” (3.81mm) Right Angle
.150” (3.81mm) Vertical
B
C
* E
* F
*G
*H
Slides
A5
.250” (6.35mm)
Double Flatted
Tactiles
IMPORTANT:
Switches are supplied without UL,
cULus & CSA marking unless specified.
UL, cULus & CSA recognized only when
ordered with marking on the switch.
Specific models, ratings, & ordering in-
structions are noted on General Specifi-
cations page.
Tilt
*
For cap codes
B & C only
Touch
Indicators
DESCRIPTION FOR TYPICAL ORDERING EXAMPLE
M2B15AA5G30-FC
Accessories
.250” (6.35mm) Bushing
with Double Flat
Red .201” (5.1mm) Diameter Cap
on .282” (7.16mm) Long Plunger
SPDT ON-(ON) Circuit
Right Angle PC Terminals
Gold Contacts
with 0.4VA Rating
Supplement
C66
www.nkk.com
Process Sealed Miniature Pushbuttons
POLES & CIRCUITS
Plunger Position
( ) = Momentary
Normal
Pole
Model
Down
Connected Terminals
Normal
Down
Note:
Series M2
Throw & Schematics
Toggles
1 (COM)
C
SP
M2B15
ON
(ON)
1-3
1-2
SPDT
DP
M2B25
ON
(ON)
1-3 4-6
1-2 4-5
DPDT
1 (COM)
3
2
6
4
5
PLUNGERS
A
.282” (7.16mm) Long
(2.84) Dia
.112
(3.0) Dia
.118
B
For cap codes F & H
Material:
Chrome over brass
(7.16)
.282
For cap codes B & C
Material:
Chrome over brass
(3.0) Dia
.118
(7.8)
.307
BUSHING
A5
.250” (6.35mm) Double Flatted
Tactiles
(6.8)
.268
(5.2)
.205
(6.2)
.244
(6.35)
.250
CONTACT MATERIALS & RATINGS
W
Silver over Silver
Power Level
1A @ 125V AC & 1A @ 30V DC
Gold over Brass or Copper
Logic Level
0.4VA maximum @ 28V AC/DC maximum
Complete explanation of operating range in Supplement section.
Power Level
or Logic Level
1A @ 125V AC
or 0.4VA maximum @ 28V AC/DC maximum
A
Gold over Silver
www.nkk.com
C67
Supplement
Note: This dual rated option is suitable when two or more identical switches are used in logic and in power circuits
within the same application. See Supplement section for complete explanation of dual rating and operating range.
Accessories
Indicators
G
Touch
Tilt
Slides
Rotaries
Keylocks
.307” (7.8mm) Long
Programmable Illuminated PB
3
2
Pushbuttons
Terminal numbers are
not actually on the switch.
Rockers
Series M2
Toggles
Process Sealed Miniature Pushbuttons
PC TERMINALS
Rockers
03
Straight
Epoxy Seal
(4.8) (5.9)
.189 .232
(1.17)
.046
Thk = (0.8)
.031
13
Straight with
.460” (11.7mm) Bracket
(11.7)
.460
(5.9)
.232
Pushbuttons
Programmable Illuminated PB
C
30
.150” (3.81mm) Right Angle
40
.150” (3.81mm) Vertical
(3.81)
.150
(3.81)
.150
Keylocks
SNAP-ON CAPS
For Plunger Type A
Rotaries
F
AT475
.201” (5.1mm) Diameter
(5.1) Dia
.201
H
(8.05)
.317
AT496
.295” (7.5mm) Diameter
(7.5) Dia
.295
Slides
Material: Polyamide
Colors Available:
A, B, C
(4.0)
.157
Material: Polyamide
Colors Available:
A, B, C
(8.05)
.317
(4.0)
.157
Tactiles
For Plunger Type B
Tilt
B
AT443
.315” (8.0mm) Diameter
(8.0) Dia
.315
C
(7.6)
.299
AT442
.394” (10.0mm) Diameter
(10.0) Dia
.394
(9.0)
.354
(8.0)
.315
Material: Polycarbonate
Touch
(8.8)
.346
Material: Polycarbonate
Colors Available:
A, B, C, E, F, G, H
Colors Available:
A, B, C, E, F, G, H
Indicators
Cap Colors
Codes:
A
Black
B
White
C
Red
E
Yellow
F
Green
G
Blue
H
Gray
Supplement
Accessories
C68
www.nkk.com
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