Miniature Pushbuttons
Series MB2000
Distinctive Characteristics
Guide interlocked with actuator block prevents window locking and
maintains correct plunger alignment to assure contact stability.
Employs an over-center actuator mechanism, which diminishes
sparking and increases operating life in AC circuits.
High torque bushing construction prevents rotation
or separation from frame during installation.
Splashproof option (D3 and B3 bushing codes) features an
o-ring within the bushing and one under the face nut
to protect from splashed, sprayed, or spilled liquids.
High insulating barriers, formed in the molded
diallyl phthalate case, increase isolation of circuits
in multipole devices.
Prominent external insulating barriers increase
insulation resistance and dielectric strength.
Epoxy sealed terminals prevent entry of solder
flux and other contaminants.
Clinching of the frame to the case well above the base
and terminals provides 1,500V dielectric strength.
Actual Size
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
03-07
Miniature Pushbuttons
Series MB2000
General Specifications
Electrical Capacity (Resistive Load)
Power Level (code W):
Logic Level (code G):
Logic/Power Level (code A):
6A @ 125V AC & 3A @ 250V AC or 3A @ 30V DC
0.4VA maximum @ 28V AC/DC maximum (Applicable Range 0.1mA ~ 0.1A @ 20mV ~ 28V)
Combines W & G ratings
Note: Find additional explanation dual rating & operating range in Supplement section.
10 milliohms maximum for silver; 20 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
50,000 operations minimum for splashproof models; 100,000 for all other models
25,000 operations minimum for silver; 50,000 operations minimum for gold
50,000 operations minimum for silver at 3A @ 125V AC
Momentary Action: 1-pole 9.32N; 2-pole 16.18N; 4-pole 25.54N;
Alternate Action: 1-pole 4.41N; 2-pole 7.06N; 4-pole 11.77N
Slow make, slow break
Screw-on Cap (Mom.)
Screw-on Cap (Alt.)
Snap-on Cap (Mom. & Alt.)
.028” (0.71mm)
.110” (2.80mm)
.125” (3.19mm)
.043” (1.09mm)
.043” (1.10mm)
.050” (1.26mm)
.071” (1.80mm)
.153” (3.90mm)
.175” (4.45mm)
Brass w/nickel plating; polyacetal w/B1 bushing
Bushing:
Brass with nickel plating
Stainless steel
Case:
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 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
–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)
B3 & D3 bushing options equivalent to IP67
1.5Nm (13.0 lb
•
in) for double nut; .7Nm (6.0 lb
•
in) for single nut
80.0N (18.0 lbf) maximum downward force on actuator
Wave Soldering (PC version): See Profile A in Supplement section.
Manual Soldering: See Profile A in Supplement section.
These devices are not process sealed. Hand clean locally using alcohol based solution.
UL94V-0 case
All models recognized at 6A @ 125V AC or 3A @ 250V AC or 0.4VA max. @ 28V DC max;
UL File No. WOYR2.E44145; add “/U” to end of part number to order UL mark on switch
C-UL File No. WOYR8.E44145; add “/C-UL” to end of part number to order C-UL mark on switch
All models certified at 6A @ 125V AC or 3A @ 250V AC or 0.4VA max. @ 28V max;
CSA File No. 023535-0-000; add “/C” to end of part number to order CSA mark on switch.
Other Ratings
Contact Resistance:
Insulation Resistance:
Dielectric Strength:
Mechanical Life:
Electrical Life:
Nominal Operating Force:
Contact Timing:
Plunger Travel:
Pretravel:
Overtravel:
Total Travel
Materials & Finishes
Plunger:
Frame:
Movable Contactor:
Movable Contacts:
Stationary Contacts:
Terminals:
Environmental Data
Operating Temp Range:
Humidity:
Vibration:
Shock:
Sealing:
Installation
Mounting Torque:
Cap Installation Force:
Soldering Time & Temp:
Process Seal:
Standards & Certifications
Flammability Standards:
UL & C-UL Recognized:
R
CSA Certified:
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
03-07
Large Bushing Miniature Pushbuttons
Series MB2000
D
CAPS
B
C
D
E
.315” (8.0mm) Dia.
.394” (10.0mm) Dia.
.520” (13.2mm) Dia.
.748” (19.0mm) Dia.
TYPICAL SWITCH ORDERING EXAMPLE
MB
2011
S
B1
W
01
A
POLES & CIRCUITS
2011
2065
2061
2085
2181
2185
SPDT
SPDT
DPDT
DPDT
4PDT
4PDT
ON
ON
ON
ON
ON
ON
(ON)
ON
(ON)
ON
(ON)
ON
CONTACT MATERIALS
& RATINGS
W
Silver
Rated 6A @ 125V AC
& 3A @ 250V AC
Gold
Rated 0.4VA max @
28V AC/DC max
G
( ) = Momentary
CAP COLORS
TERMINALS
A
B
C
*
D
*
E
F
*
G
*
H
Black
White
Red
Amber
Yellow
Green
Blue
Gray
PLUNGER TYPE
S
Plunger for Screw-on Caps
01
02
03
05
06
Solder Lug
Quick Connect
.250” (6.35mm) Straight PC
.425” (10.8mm) Wirewrap
.750” (19.05mm) Wirewrap
.964” (24.5mm) Wirewrap
1.062” (27.0mm) Wirewrap
BUSHINGS
B1
B3
.472” (12.0mm)
Threaded with Keyway
.472” (12.0mm)
Threaded w/Splashproof
07
08
*
Not available
with cap code E
IMPORTANT:
Switches are supplied without UL, C-UL, & CSA
markings unless specified. Specific models &
ratings noted on General Specifications page.
DESCRIPTION FOR TYPICAL ORDERING EXAMPLE
MB2011SB1W01-DA
Black .520” (13.2mm) Diameter Cap
Plunger for Screw-on Caps
.472” (12.0mm) Diameter
Threaded Bushing with Keyway
Silver Contacts with
6-Amp Rating
SPDT ON-(ON) Circuit
Solder Lug Terminals
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
03-07
Large Bushing Miniature Pushbuttons
POLES & CIRCUITS
Plunger Position
( ) = Momentary
Normal
Pole
Model
Keyway
Series MB2000
Throw & Switch Schematics
Note: Terminal numbers are
not actually on the switch.
2 (COM)
3
1
Connected Terminals
Normal
Keyway
Down
Down
SP
MB2011
MB2065
MB2061
MB2085
MB2181
MB2185
ON
ON
ON
ON
ON
ON
(ON)
ON
(ON)
ON
(ON)
ON
2-3
2-1
SPDT
DP
2-3 5-6
2-1 5-4
DPDT
3
2
(COM)
1
6
5
4
4P
2-3 5-6
8-9 11-12
2-1 5-4
8-7 11-10
4PDT
3
2
1
6
5
(COM)
4
9
8
7
12
11
10
PLUNGER TYPE
S
Plunger for
Screw-on Caps
Plunger is plastic
for B1 bushing.
(6.4) Dia
.252
(5.3)
.208
(6.7) Dia
.264
Plunger is metal for
B3 bushing.
(5.3)
.208
On alternate action models, after
transferring circuit, the plunger
returns to its original position,
and does not latch down.
BUSHINGS
B1
.472” (12.0mm) Diameter
Threaded with Keyway
(1.85)
.073
(5.0)
.197
(1.1)
.043
M12P1
B3
.472” (12.0mm) Diameter
Threaded Splashproof
M12P1
(2.0)
.079
Maximum Panel
Thickness with
Standard Hardware:
.217” (5.5mm)
Maximum Panel
Thickness with
Standard Hardware:
.217” (5.5mm)
(4.9)
.193
(12.0)
.472
(18.0) Dia
.709
(12.0)
.472
Panel Cutouts
(12.5) Dia
.492
For B1 Bushing
with Keyway
(1.5)
.060
(11.5)
.453
For B1 Bushing
with Optional
Locking Ring
(12.5) Dia
.492
(9.0)
.354
(3.0) Dia
.118
For B3 Bushing
without Keyway
(12.5) Dia
.492
CONTACT MATERIALS & RATINGS
W
G
Silver over Silver
Power Level
6A @ 125V AC & 3A @ 250V AC
Gold over Brass or Copper
Logic Level
0.4VA maximum @ 28V AC/DC maximum
Note: Complete explanation of operating range in Supplement section.
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
03-07
Large Bushing Miniature Pushbuttons
TERMINALS
01
Solder Lug
Epoxy Seal
(2.0)
.079
(4.0)
.157
Series MB2000
Epoxy Seal
(6.35)
.250
(1.57)
.062
Thk = (0.8)
.031
02
.062” (1.57mm) Wide
Quick Connect
(2.0)
(1.1) .079
.043
Thk = (0.8)
.031
03
.250” (6.35mm)
Straight PC
3
2
3
(4.8)
.189
6
5
4
3
6
5
4
9
8
7
12
11
10
(4.8) Typ
.189
(4.7) Typ
.185
(4.7) Typ
.185
(1.8) Dia Typ
.073
2
1
(4.7) Typ
.185
2
1
Epoxy Seal
(6.35)
(4.8) .250
.189
1
(1.17)
.046
Thk = (0.8)
.031
(1.8) Dia Typ
.073
(1.8) Dia Typ
.073
Single Pole
Double Pole
Four Pole
05
06
07
08
.425” (10.8mm)
Wirewrap or Extended PC
.750” (19.05mm)
Wirewrap or Extended PC
.964” (24.5mm)
Wirewrap or Extended PC
1.062” (27.0mm)
Wirewrap or Extended PC
Epoxy Seal
A
(1.27)
.050
Thk = (0.8)
.031
If using as extended PC terminal, refer to the above footprints.
Dimension A = terminal lengths as shown beside the terminal
codes at the left.
CAPS & CAP COLORS
B
AT078
.315” (8.0mm) Dia.
Screw-on Cap
C
AT079
.394” (10.0mm) Dia.
Screw-on Cap
D
AT414
.520” (13.2mm) Dia.
Screw-on Cap
E
AT412
.748” (19.0mm) Dia.
Screw-on Cap
Material:
Polystyrene
Finish:
Glossy
Colors Available:
ABCEFGH
Material:
Polystyrene
Finish:
Glossy
Colors Available:
ABCEFGH
(10.0) Dia
.394
(6.5)
.256
(13.28)
.523
(8.0)
.315
Material:
PBT
Finish:
Glossy
Colors Available:
ABCDEFGH
(13.2) Dia
.520
(11.0)
.433
Material:
Polystyrene
Finish:
Glossy
Colors Available:
ABCF
(19.0) Dia
.748
(12.0)
.472
(8.0)
.315
(8.0) Dia
.315
(11.79)
.464
(15.0)
.590
Cap Color
Codes:
A
Black
B
White
C
Red
D
Amber
E
Yellow
F
Green
G
Blue
H
Gray
03-07
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
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