
Miniature Pushbutton with Splashproof Boot
MB2011VA001
Series MB2000
Bushing Mount • Single Pole • Solder Lug
(0.8)
.031
(9.0) Dia
.354
(7.9)
.311
(2.5)
.098
BASE SWITCH
AT4041H
Splashproof Boot
Part Number
MB2011SS1W01/CUL
M2.3 P0.4
Color: Black
Material: Silicone rubber
Operating life:
100,000 operations
Sealing: IP65 rated
Keyway
(2.9)
.114
(3.0)
.118
1/4-40 Thd
1/4-40 Thd
(3.5)
.138
(8.5)
.335
(1.1) x (2.0) Typ
.043 x .079
(21.0)
.827
(4.5)
.177
Dimensions in mm/inch
(0.8) Typ
.031
(4.7) Typ
.185
(0.5)
.020
COM
3
2
(13.0)
.512
1
(2.0)
.079
PANEL CUTOUT
(5.8)
.228
(0.6)
Panel Thickness:
.134” (3.4mm) Maximum
SPLASHPROOF BOOT
Installation Instructions
1. Insert switch bushing from back
of panel into the cutout hole and
adjust height of bushing above
the panel to a minimum of .098”
(2.5mm) and a maximum of
(8.5)
.335
.138” (3.5mm).
2. Screw the boot onto the bushing.
Tighten the hexagon nut on the
back of panel to complete.
Boot is accompanied by a threaded adaptor which extends the length of the plunger.
(10.8)
.425
(4.9) Dia
.193
(6.0) Dia
.236
1/4-40 Thd
(2.5) (3.5)
.098 .138
(3.4) Max
.134
~
STANDARD HARDWARE
AT513H Hexagon Nut
1 included with each switch
Material:
Brass with Nickel plating
(9.0)
(8.0)
.315
AT509 Lockwasher
1 included with each switch
Material:
Steel with Zinc/Chromate
POLES & CIRCUITS
Plunger Position
( ) = Momentary
Pole Model
SP MB2011 ON (ON) 2-3 2-1 SPDT
Normal Down Normal Down
Connected Terminals Throw & Switch Schematics
Note: Terminal numbers are not
actually on the switch.
CONTACT MATERIALS & RATINGS
(6.4)
.252
.402
Silver over Silver Power Level 6A @ 125V AC & 3A @ 250V AC
www.nkkswitches.com
1
08/15/19

Miniature Pushbutton with Splashproof Boot
Series MB2000
Base Switch Specifications
Electrical Capacity (Resistive Load)
Power Level (silver): 6A @ 125V AC & 3A @ 250V AC
Other Ratings
Contact Resistance: 10 milliohms maximum
Insulation Resistance: 1,000 megohms minimum @ 500V DC
Dielectric Strength: 1,000V AC minimum between contacts for 1 minute minimum;
1,500V AC minimum between contacts & case for 1 minute minimum
Mechanical Life: 100,000 operations minimum
Electrical Life: 25,000 operations minimum
Nominal Operating Force: 9.32N
Contact Timing: Slow make, slow break
Plunger Travel: Pretravel .028” (0.71mm)
Overtravel .043” (1.09mm)
Total Travel .071” (1.80mm)
Materials & Finishes
Plunger: Brass with nickel plating
Bushing: Brass with nickel plating
Frame: Stainless steel
Case: Diallyl phthalate resin (UL94V-0)
Movable Contactor: Phosphor bronze with silver plating
Movable Contacts: Silver alloy
Stationary Contacts: Silver with silver plating
Terminals: Copper or brass with silver plating
Environmental Data
Operating Temperature Range: –30°C through +85°C (–22°F through +185°F)
Humidity: 90 ~ 95% humidity for 96 hours @ 40°C (104°F)
Vibration: 10 ~ 55Hz with peak-to-peak amplitude of 1.5mm traversing the frequency range and returning
in 1 minute; 3 right angled directions for 2 hours
Shock: 50G (490m/s2) acceleration (tested in 6 right angled directions, with 5 shocks in each direction)
RoHS Compliant:
Installation
Mounting Torque: 0.7Nm (6.0 lb•in)
Soldering Time & Temperature: Manual Soldering: 390°C for 4 seconds maximum, 2 cycles
Process Seal: These devices are not process sealed. Hand clean locally using alcohol based solution.
Standards & Certifications
Flammability Standards: UL94V-0 case
UL: File No. E44145
“/CUL” at end of part number for UL recognized switch.
Models recognized at 6A @ 125V AC or 3A @ 250V AC.
www.nkkswitches.com
2

Mouser Electronics
Authorized Distributor
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NKK Switches:
MB2011VA001