Series MB2400
Toggles
Snap-Action Pushbuttons
General
Specifications
Electrical Capacity (Resistive Load)
Power Level (silver):
Logic Level (gold):
Logic/Power Level:
(gold over silver)
Rockers
Pushbuttons
C
3A @ 125V AC
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.
Other Ratings
Programmable Illuminated PB
Contact Resistance:
Insulation Resistance:
Dielectric Strength:
Mechanical Life:
Electrical Life:
Nominal Operating Force:
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 2.45N; double pole 3.92N
Pretravel .024” (0.6mm); Overtravel .016” (0.4mm); Total Travel .039” (1.0mm)
Keylocks
Materials & Finishes
Plunger:
Bushing:
Frame:
Case:
Base:
Movable Contactor:
Movable Contacts:
Stationary Contacts:
Terminals:
Slides
Brass with nickel plating
Brass with nickel plating
Stainless steel
Polybutylene terephthalate (PBT) (UL94V-0)
Diallyl phthalate resin (UL94V-0)
Phosphor bronze with silver or gold plating
Silver alloy (code W); copper with gold plating (code G); or silver alloy with gold plating (code A)
Silver alloy with silver plating (code W); copper or brass with gold plating (code G); or
silver with gold plating (code A)
Copper or brass with silver plating; copper or brass with gold plating
Rotaries
Environmental Data
Tactiles
Operating Temp Range:
Humidity:
Vibration:
Shock:
–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 3 shocks in each direction)
Tilt
Installation
Touch
Mounting Torque:
Cap Installation Force:
Soldering:
Cleaning:
Indicators
1.5Nm (13.0 lb
•
in) for double nut; 0.7Nm (6.0 lb
•
in) for single nut
80.0N (18.0 lbf) maximum downward force on actuator
Wave Soldering (PC version): See Profile B in Supplement section.
Manual Soldering: See Profile B in Supplement section.
These devices are not process sealed. Hand clean locally using alcohol based solution.
See Cleaning Specifications in Supplement section.
Standards & Certifications
Flammability Standards:
UL:
CSA:
Supplement
UL94V-0 case & 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 single and double pole models recognized at 3A @ 125V AC or 0.4VA max. @ 28V DC max.
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.
Single pole models with PC, solder lug, or Wirewrap terminals & double pole with PC or
Wirewrap terminals certified at 3A @ 125V AC or 0.4VA @ 28V maximum.
Accessories
C96
www.nkk.com
Snap-Action Pushbuttons
Series MB2400
Toggles
Distinctive
Characteristics
Snap-acting mechanism gives smooth actuation, short stroke,
light touch, and audible feedback. This mechanism also provides
long mechanical life.
High torque bushing construction prevents rotation or separation
from frame during installation.
Antijamming design protects contacts from damage due to
excessive downward force on the actuator.
Compatible companions with M series toggles. Body,
bushing, and footprint dimensions ideal for mounting
MB2400 pushbuttons and M toggles next to one another.
Stainless steel frame resists corrosion.
Longer center solder lug terminal simplifies wiring and
soldering.
Silver contacts of specially composed alloy for hardness.
Epoxy sealed terminals prevent entry of solder flux and other
contaminants.
Prominent external insulating barriers increase insulation resistance
and dielectric strength.
C
Actual Size
Bracket PC Mount
Page C102
www.nkk.com
C97
Supplement
Snap-in Mount
Page C108
Accessories
Indicators
Touch
Bushing Mount
Page C98
Tilt
Tactiles
Slides
Rotaries
Keylocks
Programmable Illuminated PB
Pushbuttons
Rockers
Series MB2400
Toggles
Snap-Action Bushing Mount Pushbuttons
TYPICAL SWITCH ORDERING EXAMPLE
Pushbuttons
Rockers
MB24
C
11
61
11
(ON)
(ON)
E1
W
01
F
H
F
Caps
.201” (5.1mm)
Diameter
.295” (7.5mm)
Diameter
A
Poles & Circuits
SPDT
DPDT
ON
ON
W
G
Contact Materials
& Ratings
Silver
Rated 3A @ 125V AC
Gold
Rated 0.4VA max @
28V AC/DC max
Gold over Silver
Rated 3A @ 125V AC
& 0.4VA max @ 28V
AC/DC max
Programmable Illuminated PB
( ) = Momentary
Bushings
E1
E2
A1
.285” (7.24mm)
Threaded with D Flat
.285” (7.24mm)
Smooth with D Flat
.280” (7.1mm)
Threaded with Keyway
.280” (7.1mm)
Smooth with Keyway
.350” (8.9mm)
Threaded with Keyway
.350” (8.9mm)
Smooth with Keyway
01
03
05
06
07
A
Cap Colors
A
B
C
Black
White
Red
Keylocks
Terminals
Solder Lug*
.250” (6.35mm) Straight PC
.425” (10.8mm) Wirewrap
.750” (19.05mm) Wirewrap
.964” (24.5mm) Wirewrap
Rotaries
A2
S1
Slides
S2
Tactiles
IMPORTANT:
*
Wire harness & cable assemblies
offered only in Americas
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.
Touch
Tilt
DESCRIPTION FOR TYPICAL ORDERING EXAMPLE
MB2411E1W01-FA
Indicators
Black .201” (5.1mm)
Diameter Cap
SPDT ON-(ON) Circuit
Silver Contacts with
3-Amp Rating
Accessories
.285” (7.24mm) Threaded Bushing
with D Flat
Supplement
Solder Lug Terminals
C98
www.nkk.com
Snap-Action Bushing Mount Pushbuttons
POLES & CIRCUITS
Plunger Position
( ) = Momentary
Normal
Pole
Model
Keyway
Series MB2400
Throw & Switch Schematics
Note: Terminal numbers are not
actually on the switch.
1 (COM)
3
1 (COM)
3
2
6
2
4
5
Connected Terminals
Normal
Keyway
Down
Down
SP
MB2411
ON
(ON)
1-3
1-2
SPDT
C
DP
MB2461
ON
(ON)
1-3 4-6
1-2 4-5
DPDT
BUSHINGS
Note: Plunger selection is not required for MB2400 pushbuttons. The plunger can be used with or without a cap.
E1
.285” (7.24mm)
Threaded with D Flat
A1
.280” (7.1mm)
Threaded with Keyway
(0.8)
.031
S1
(0.8)
.031
(8.0) Dia
.315
(0.9)
.035
.350” (8.9mm)
Threaded with Keyway
1/4-40 Thd
(2.84) Dia
.112
(8.0) Dia
.315
(2.5)
.098
(0.9)
.035
1/4-40 Thd
(2.84) Dia
.112
(2.5)
.098
(5.54) (7.1)
.218 .280
1/4-40 Thd
(2.84) Dia
.112
(2.5)
.098
(5.54)
.218
(8.9)
.350
(0.9)
.035
(5.54) (7.24)
.218 .285
Maximum Panel Thickness with
Standard Hardware: .068” (1.74mm)
.285” (7.24mm)
Smooth with D Flat
Maximum Panel Thickness with
Standard Hardware: .068” (1.74mm)
.280” (7.1mm)
Smooth with Keyway
(6.2) Dia
.244
(2.84) Dia
.112
(2.5)
.098
(5.54) (7.1)
.218 .280
(0.9)
.035
Maximum Panel Thickness with
Standard Hardware: .134” (3.40mm)
.350” (8.9mm)
Smooth with Keyway
(8.0) Dia
.315
(2.5)
.098
(0.9)
.035
(8.0) Dia
.315
(8.0) Dia
.315
(2.5)
.098
(5.54)
.218
(8.9)
.350
(0.9)
.035
For A1, A2, S1, or S2 Bushing
with Keyway
For E1 or E2 Bushing
with D Flat
With
Optional Locking Ring
(5.6)
.220
(6.5) Dia
.256
(0.6)
.024
(6.5) Dia
.256
(5.8)
.228
Standard hardware includes 2 hex nuts & 1 lockwasher.
Hardware is illustrated following the Typical Switch Dimension drawings.
www.nkk.com
C99
Supplement
(6.5) Dia
.256
(2.2) Dia
.087
(6.5)
.256
Accessories
Indicators
Panel Cutouts
Touch
(5.54) (7.24)
.218 .285
Tilt
(6.2) Dia
.244
(2.84) Dia
.112
(0.8)
.031
(0.8)
.031
(6.2) Dia
.244
(2.84) Dia
.112
Tactiles
E2
A2
S2
Slides
Rotaries
(8.0) Dia
.315
Keylocks
Programmable Illuminated PB
Pushbuttons
Rockers
Toggles
Series MB2400
Toggles
Snap-Action Bushing Mount Pushbuttons
CONTACT MATERIALS & RATINGS
Rockers
W
Silver over Silver
Power Level
3A @ 125V AC
Pushbuttons
G
Gold over Brass or Copper
Logic Level
0.4VA maximum @ 28V AC/DC maximum
C
A
Note: Complete explanation of operating range in Supplement section.
Programmable Illuminated PB
Gold over Silver
Power Level
or Logic Level
3A @ 125V AC
or 0.4VA maximum @ 28V AC/DC maximum
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.
TERMINALS
01
Solder Lug
Epoxy Seal
(2.0)
.079
Keylocks
03
(4.0)
.157
(2.0)
(1.1) .079
.043
Thk = (0.8)
.031
.250” (6.35mm)
Straight PC
Epoxy Seal
Rotaries
(6.35)
(4.8) .250
.189
(1.17)
.046
Thk = (0.8)
.031
Slides
Wirewrap or Extended PC
05
06
07
.425”
(10.8mm)
Epoxy Seal
3
3
(4.8)
.189
6
5
4
Tactiles
.750”
(19.05mm)
.964”
(24.5mm)
Thk = (0.8)
.031
A
(1.27)
.050
Refer to footprints if using
as extended PC terminal.
Dimension A = terminal
lengths as shown beside
the code boxes at left.
2
1
(4.7) Typ
.185
(1.8) Dia Typ
.073
2
1
(4.7) Typ
.185
(1.8) Dia Typ
.073
Tilt
Single Pole
Double Pole
CAPS & CAP COLORS
Touch
F
AT475
.201” (5.1mm)
Diameter Cap
H
(5.1) Dia
.201
(6.4)
.253
(4.0)
.157
AT496
.295” (7.5mm)
Diameter Cap
(7.5) Dia
.295
(6.4)
.253
Indicators
(4.0)
.157
Material: Polyamide
Finish: Glossy
Material: Polyamide
Finish: Glossy
Accessories
Supplement
Cap Colors
Available:
A
Black
B
White
C
Red
C100
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