Series MB2000
Large Bushing Miniature Pushbuttons
POLES & CIRCUITS
Plunger Position
( ) = Momentary
Connected Terminals
Throw & Switch Schematics
Pole
Model
Normal
Keyway
Down
Normal
Keyway
Down
Note: Terminal numbers are
not actually on the switch.
C
SP
MB2011
MB2065
ON
ON
(ON)
ON
2-3
2-1
SPDT
3
2 (COM)
1
DP
MB2061
MB2085
ON
ON
(ON)
ON
2-3 5-6
2-1 5-4
DPDT
3
2
(COM)
1
6
5
4
4P
MB2181
MB2185
ON
ON
(ON)
ON
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
Plunger is metal for
B3 bushing.
(6.7) Dia
.264
(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
B3
.472” (12.0mm) Diameter
Threaded Splashproof
M12P1
(2.0)
.079
Maximum Panel
Thickness with
Standard Hardware:
.217” (5.5mm)
(5.0)
.197
(1.85)
.073
(1.1)
.043
M12P1
Maximum Panel
Thickness with
Standard Hardware:
.217” (5.5mm)
(4.9)
.193
(12.0)
.472
Panel Cutouts
(18.0) Dia
.709
(12.0)
.472
For B1 Bushing
with Keyway
(1.5)
.060
(12.5) Dia
.492
(11.5)
.453
For B1 Bushing
with 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
Gold over Brass or Copper
Power Level
Logic Level
6A @ 125V AC & 3A @ 250V AC
0.4VA maximum @ 28V AC/DC maximum
Note: Complete explanation of operating range in Supplement section.
C88
www.nkk.com
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